B+S RU3/RU3B SEALING PARTS RS/L AND RS/LA POLYPAC EU/S
Description
Today U-Cups are used primarily as seals for piston rods in hydraulic cylinders. U-Cups in polyurethane are proven elements, due to their good mechanical properties, for standard cylinder construction, particularly for mobile hydraulics under rough operating conditions.
Type RU3
The U-Cup type RU3 is used as a rod seal for heavy-duty conditions in mobile and industrial hydraulics. It is installed with a fixed seat at its outer diameter. The rear dynamic sealing lip improves the leakage behaviour and, at the same time, prevents the entry of contaminants from the atmosphere side. Compared with the type RU2, the shorter inner lip is more flexible and can adapt better to the operating conditions and deflections of the piston rod.
A lubricant trap forms between the sealing lips. This counters the stick-slip tendency and prevents dry running. At the same time the good lubrication behaviour reduces wear.
Method of Operation
The sealing effect of the U-Cup comes from the intrinsic preload of the seal body and from the compression of the seal lips during installation. In operating condition, the radial mechanical contact forces are superimposed by the system pressure.
At low stroke speeds, U-Cups can tend to have a stick-slip effect due to an inadequate lubrication film formation in the seal clearance and to their material properties. This behaviour corresponds to the Stribeck curve described in the relevant literature.
Advantages
– Good sealing effect
– Good abrasion resistance, wear-resistant
– Compensates deflections of the piston rod
– Entry of dirt and air into the system is more or less ruled out
– Unaffected by sudden loads and high pressures
– Simple installation.
Technical Data
Operating pressure: Max. 40 MPa
Speed: Up to 0.5 m/s
Temperature: Use in mineral oils: -30°C to + 80°C
Media: Mineral oil-based hydraulic fluids.
Important Note:
The above data are maximum values and cannot be used at the same time. e.g. the maximum operating speed depends on material type, pressure, temperature and gap value.
Material
The thermoplastic polyurethane material used for U-Cups has a high abrasion resistance, a low compression set and exhibits a high resistance to clearance extrusion.
WUAQ3 turquoise color
WU9L3 blue color
UAT60 red color
Seal Clearance
Guide values for the radial clearance between rod and gland in relation to the operating pressure and rod diameter can be found in Table.
Design and Installation Instructions
The different forms have different grooves, see Table. U-Cups are used together with single-acting scrapers.
| Note | Rod Diameter | Groove Diameter | Groove Width | Seal Width | Part No. | B+S Ref. |
Sealing Parts Ref. No. | Polypac Ref. No. |
| dN f8/h9 | D1 H10 | L +0.2 | B | Material Code | ||||
| WUAQ3 | WU9L3 | UAT60 | ||||||
| * | 6,0 | 14,0 | 6,3 | 5,7 | RU3100060 | D | – | – |
| * | 6,0 | 16,0 | 7,0 | 6,0 | RU3000060 | D | – | – |
| * | 8,0 | 16,0 | 6,3 | 5,7 | RU3000080 | D | – | – |
| * | 10,0 | 18,0 | 6,3 | 5,7 | RU3100100 | D | – | – |
| * | 10,0 | 20,0 | 8,0 | 7,0 | RU3000100 | D | – | – |
| 12,0 | 19,0 | 5,6 | 5,0 | RU3100120 | D | – | – | |
| * | 12,0 | 20,0 | 6,3 | 5,7 | RU3200120 | D | – | – |
| * | 12,0 | 22,0 | 8,0 | 7,0 | RU3000120 | D | – | – |
| 14,0 | 21,0 | 6,0 | 5,0 | RU3100140 | D | – | – | |
| * | 14,0 | 22,0 | 6,3 | 5,7 | RU3200140 | D | – | – |
| * | 14,0 | 24,0 | 8,0 | 7,3 | RU3000140 | D | RS 14 24/L | – |
| * | 15,0 | 23,0 | 6,3 | 5,7 | RU3000150 | D | – | – |
| * | 15,0 | 26,0 | 8,0 | 7,0 | RU3100150 | – | RS 15 26/L | – |
| * | 15,4 | 25,5 | 7,4 | 6,5 | RU3000154 | – | RS 15.4 25.5 L | – |
| * | 16,0 | 24,0 | 6,3 | 5,7 | RU3200160 | D | – | – |
| * | 16,0 | 24,0 | 7,0 | 6,0 | RU3300160 | D | – | – |
| * | 16,0 | 26,0 | 6,0 | 5,0 | RU3100160 | D | – | – |
| * | 16,0 | 26,0 | 8,0 | 7,3 | RU3000160 | D | – | – |
| 18,0 | 25,0 | 6,0 | 5,0 | RU3200180 | D | – | – | |
| * | 18,0 | 26,0 | 6,3 | 5,7 | RU3300180 | D | – | – |
| * | 18,0 | 26,0 | 7,0 | 6,3 | RU3100180 | D | RS 18 26/L1 | – |
| * | 18,0 | 26,0 | 9,0 | 8,0 | RU3100180 | – | RS 18 26/L | – |
| * | 18,0 | 28,0 | 8,0 | 7,3 | RU3000180 | D | – | – |
| * | 19,5 | 27,5 | 9,0 | 8,0 | RU3000195 | – | RS 19.5 27.5/L | – |
| 20,0 | 26,0 | 6,3 | 5,4 | RU3400200 | – | – | EU 2026/S | |
| * | 20,0 | 28,0 | 5,0 | 4,3 | RU3200200 | D | – | – |
| * | 20,0 | 28,0 | 6,3 | 5,7 | RU3300200 | D | – | – |
| * | 20,0 | 28,0 | 8,0 | 7,3 | RU3100200 | D | – | – |
| * | 20,0 | 30,0 | 6,3 | 5,7 | RU3500200 | D | – | – |
| * | 20,0 | 30,0 | 8,0 | 7,3 | RU3000200 | D | – | – |
| * | 20,0 | 30,0 | 9,0 | 8,0 | RU3600200 | D | – | – |
| * | 20,0 | 30,0 | 11,0 | 10,0 | RU3700200 | D | – | – |
| 22,0 | 29,0 | 6,0 | 5,0 | RU3100220 | D | – | – | |
| * | 22,0 | 30,0 | 7,0 | 6,0 | RU3200220 | – | RS 22 30/L | – |
| * | 22,0 | 32,0 | 8,0 | 7,3 | RU3000220 | D | – | – |
| * | 25,0 | 33,0 | 6,3 | 5,7 | RU3100250 | D | – | – |
| 25,0 | 33,0 | 7,0 | 6,0 | RU3200250 | – | RS 25 33/L2 | – | |
| 25,0 | 33,0 | 7,5 | 6,5 | RU3300250 | – | RS 25 33/L1 | – | |
| 25,0 | 33,0 | 8,0 | 7,3 | RU3500250 | – | RS 25 33/L | – | |
| * | 25,0 | 35,0 | 8,0 | 7,3 | RU3000250 | D | – | – |
| * | 25,0 | 35,0 | 11,0 | 10,0 | RU3400250 | D | – | – |
| 28,0 | 36,0 | 6,3 | 5,7 | RU3400280 | D | – | – | |
| 28,0 | 36,0 | 8,0 | 7,3 | RU3000280 | D | – | – | |
| * | 28,0 | 38,0 | 6,3 | 5,7 | RU3500280 | D | – | – |
| * | 28,0 | 38,0 | 8,0 | 7,3 | RU3100280 | D | – | – |
| * | 28,0 | 38,0 | 8,5 | 7,5 | RU3600280 | – | RS 28 38/L | – |
| * | 28,0 | 38,0 | 9,0 | 8,0 | RU3200280 | D | – | – |
| * | 28,0 | 43,0 | 12,5 | 11,5 | RU3300280 | D | – | – |
| 30,0 | 38,0 | 6,3 | 5,7 | RU3100300 | D | – | – | |
| 30,0 | 38,0 | 7,0 | 6,0 | RU3200300 | D | – | – | |
| 30,0 | 38,0 | 8,0 | 7,0 | RU3300300 | D | – | – | |
| 30,0 | 38,0 | 9,0 | 8,0 | RU3400300 | D | – | – | |
| 30,0 | 40,0 | 7,5 | 6,5 | RU3500300 | – | RS 30 40/L1 | – | |
| 30,0 | 40,0 | 8,0 | 7,3 | RU3000300 | D | RS 30 40/L | – | |
| 30,0 | 40,0 | 9,0 | 8,0 | RU3600300 | – | – | EU 3040/2/S | |
| * | 30,0 | 45,0 | 11,0 | 10,0 | RU3700300 | D | – | – |
| 32,0 | 40,0 | 6,3 | 5,7 | RU3300320 | D | – | – | |
| 32,0 | 40,0 | 7,0 | 6,0 | RU3100320 | D | – | – | |
| 32,0 | 40,0 | 7,7 | 6,7 | RU3400320 | – | RS 32 40/L | – | |
| 32,0 | 40,0 | 9,0 | 8,0 | RU3500320 | D | – | – | |
| 32,0 | 41,5 | 8,9 | 7,9 | RU3600320 | – | RS 32 41.5/L | – | |
| 32,0 | 42,0 | 6,3 | 5,7 | RU3200320 | D | – | – | |
| * | 32,0 | 42,0 | 8,0 | 7,3 | RU3000320 | D | – | – |
| * | 32,0 | 42,0 | 11,0 | 10,0 | RU3700320 | D | – | – |
| 35,0 | 42,0 | 8,0 | 7,0 | RU3200350 | D | – | – | |
| 35,0 | 42,5 | 8,0 | 7,0 | RU3300350 | D | – | – |
| 35,0 | 43,0 | 6,3 | 5,7 | RU3100350 | D | – | – | |
| 35,0 | 43,0 | 8,0 | 7,2 | RU3400350 | – | RS 35 43/L | – | |
| 35,0 | 43,0 | 9,0 | 8,0 | RU3500350 | D | – | – | |
| 35,0 | 45,0 | 8,0 | 7,0 | RU3000350 | D | – | – | |
| 35,0 | 45,0 | 9,0 | 8,0 | RU3600350 | D | – | – | |
| * | 35,0 | 45,0 | 11,0 | 10,0 | RU3700350 | D | – | – |
| * | 35,0 | 50,0 | 11,0 | 10,0 | RU3800350 | D | – | – |
| * | 35,0 | 55,0 | 11,0 | 10,0 | RU3900350 | D | – | – |
| 36,0 | 44,0 | 6,3 | 5,7 | RU3100360 | D | – | – | |
| 36,0 | 44,0 | 7,0 | 6,3 | RU3200360 | – | RS 36 44/L | – | |
| 36,0 | 46,0 | 8,0 | 7,3 | RU3000360 | D | – | – | |
| 36,0 | 46,0 | 8,5 | 7,5 | RU3300360 | – | RS 36 46/L | – | |
| 38,0 | 48,0 | 9,0 | 8,0 | RU3000380 | D | – | – | |
| 40,0 | 48,0 | 6,3 | 5,7 | RU3000400 | D | – | – | |
| 40,0 | 48,0 | 6,5 | 5,5 | RU3400400 | – | – | EU 4048/1/S | |
| 40,0 | 49,5 | 10,5 | 9,5 | RU3500400 | – | RS 40 49.5/L | – | |
| * | 40,0 | 50,0 | 8,0 | 7,3 | RU3100400 | D | RS 40 50/L | – |
| * | 40,0 | 50,0 | 9,0 | 8,0 | RU3600400 | D | – | – |
| * | 40,0 | 55,0 | 11,0 | 10,0 | RU3700400 | – | RS 40 55/L | EU 4055/S |
| 40,0 | 55,0 | 12,5 | 11,5 | RU3200400 | D | – | – | |
| 40,0 | 60,0 | 11,0 | 10,0 | RU3800400 | D | – | – | |
| 40,0 | 60,0 | 13,0 | 12,0 | RU3300400 | D | – | – | |
| 42,0 | 50,0 | 9,0 | 8,0 | RU3000420 | D | – | – | |
| 42,0 | 50,0 | 12,5 | 11,5 | RU3100420 | – | RS 42 50/L | – | |
| 42,0 | 52,0 | 11,0 | 10,0 | RU3200420 | D | – | – | |
| 42,0 | 53,0 | 10,0 | 9,0 | RU3300420 | – | RS 42 53/L | – | |
| 45,0 | 53,0 | 6,3 | 5,7 | RU3200450 | D | – | – | |
| 45,0 | 53,0 | 11,0 | 10,0 | RU3300450 | D | – | – | |
| 45,0 | 53,0 | 12,5 | 11,5 | RU3400450 | – | RS 45 53/L | – | |
| 45,0 | 55,0 | 6,3 | 5,7 | RU3500450 | D | – | ||
| 45,0 | 55,0 | 8,0 | 7,3 | RU3000450 | D | – | EU 4555/1/S | |
| 45,0 | 55,0 | 12,5 | 11,5 | RU3600450 | – | RS 45 55/L | – | |
| * | 45,0 | 57,7 | 10,5 | 9,5 | RU3700450 | – | RS 45 57.7/L | – |
| * | 45,0 | 60,0 | 12,5 | 11,5 | RU3100450 | D | – | – |
| 46,0 | 56,0 | 11,0 | 10,0 | RU3000460 | D | – | – | |
| 48,0 | 56,0 | 12,5 | 11,5 | RU3000480 | – | RS 48 56/L1 | – | |
| 48,0 | 56,0 | 13,0 | 12,0 | RU3100480 | – | RS 48 56/L | – | |
| 50,0 | 57,0 | 11,0 | 10,0 | RU3400500 | – | RS 50 57/L | – | |
| 50,0 | 58,0 | 12,5 | 11,5 | RU3500500 | – | RS 50 58/L | – | |
| * | 50,0 | 60,0 | 8,0 | 7,3 | RU3000500 | D | – | – |
| * | 50,0 | 60,0 | 11,0 | 10,0 | RU3600500 | D | – | – |
| * | 50,0 | 62,7 | 10,5 | 9,5 | RU3700500 | – | RS 50 62.7/L | – |
| 50,0 | 65,0 | 11,0 | 10,0 | RU3800500 | D | RS 50 65/L1 | – | |
| 50,0 | 65,0 | 12,0 | 11,0 | RU3300500 | D | – | – | |
| 50,0 | 65,0 | 12,5 | 11,5 | RU3200500 | D | – | – |
| 50,0 | 65,0 | 16,5 | 15,5 | RU3900500 | – | RS 50 65/L | – | |
| 50,0 | 70,0 | 11,0 | 10,0 | RU3A00500 | D | – | – | |
| 50,0 | 70,0 | 15,0 | 14,0 | RU3B00500 | – | RS 50 70/L | – | |
| 52,0 | 62,0 | 13,0 | 12,0 | RU3000520 | D | – | – | |
| 55,0 | 62,5 | 10,0 | 9,0 | RU3100550 | – | RS 55 62.5/L | – | |
| 55,0 | 63,0 | 12,5 | 11,5 | RU3200550 | – | RS 55 63/L | – | |
| 55,0 | 65,0 | 8,0 | 7,3 | RU3000550 | D | – | – | |
| 55,0 | 65,0 | 9,5 | 8,5 | RU3400550 | – | RS 55 65/L1 | – | |
| 55,0 | 65,0 | 11,0 | 10,0 | RU3300550 | D | RS 55 65/L | – | |
| 56,0 | 71,0 | 11,0 | 10,0 | RU3300560 | D | – | – | |
| 56,0 | 71,0 | 12,5 | 11,4 | RU3000560 | D | – | – | |
| * | 56,0 | 76,0 | 16,0 | 15,0 | RU3200560 | D | – | – |
| 57,1 | 66,7 | 10,5 | 9,5 | RU3000571 | – | RS 57.1 66.7/L | – | |
| 57,1 | 69,8 | 10,5 | 9,5 | RU3100571 | – | RS 57.1 69.8/L | – | |
| 58,0 | 68,0 | 12,5 | 11,5 | RU3000580 | – | RS 58 68/L | – | |
| 60,0 | 68,0 | 12,5 | 11,5 | RU3600600 | – | RS 60 68/L | – | |
| 60,0 | 70,0 | 6,0 | 5,2 | RU3100600 | D | – | – | |
| 60,0 | 70,0 | 7,0 | 6,2 | RU3200600 | D | – | – | |
| 60,0 | 70,0 | 8,0 | 7,3 | RU3400600 | D | – | – | |
| 60,0 | 70,0 | 11,0 | 10,0 | RU3700600 | D | – | EU 6070/2/S | |
| 60,0 | 70,0 | 12,5 | 11,5 | RU3000600 | D | RS 60 70/L | – | |
| 60,0 | 70,0 | 13,0 | 12,0 | RU3800600 | D | RS 60 70/L1 | – | |
| ** | 60,0 | 70,0 | 15,0 | 14,3 | RU3900600 | – | – | EU 6070/S |
| 60,0 | 72,0 | 10,0 | 9,0 | RU3500600 | D | – | – | |
| 60,0 | 75,0 | 11,0 | 10,0 | RU3A00600 | – | RS 60 75/L1 | – | |
| 60,0 | 75,0 | 12,5 | 11,5 | RU3300600 | D | – | EU 6075/1/S | |
| * | 60,0 | 75,0 | 16,5 | 15,5 | RU3B00600 | – | RS 60 75/L | – |
| 63,0 | 75,0 | 11,0 | 10,0 | RU3200630 | – | RS 63 75/L | – | |
| 63,0 | 78,0 | 12,5 | 11,5 | RU3000630 | D | – | – | |
| * | 63,0 | 83,0 | 14,5 | 13,5 | RU3300630 | – | RS 63 83/L | – |
| * | 63,0 | 83,0 | 16,0 | 15,0 | RU3100630 | D | – | – |
| 63,5 | 76,2 | 10,5 | 9,5 | RU3000635 | – | RS 63.5 76.2/L | – | |
| 65,0 | 73,0 | 12,5 | 11,5 | RU3300650 | – | RS 65 73/L | – | |
| 65,0 | 75,0 | 8,0 | 7,3 | RU3100650 | D | – | – | |
| 65,0 | 75,0 | 11,0 | 10,0 | RU3200650 | D | RS 65 75/L | – | |
| 65,0 | 75,0 | 12,5 | 11,5 | RU3000650 | D | – | – | |
| 65,0 | 75,0 | 13,0 | 12,0 | RU3400650 | – | – | EU 6575/S | |
| 65,0 | 77,7 | 10,5 | 9,5 | RU3500650 | – | RS 65 77.7/L | – | |
| 66,0 | 80,0 | 11,0 | 10,0 | RU3000660 | – | RS 66 80/L | – | |
| 67,0 | 75,0 | 12,5 | 11,5 | RU3000670 | – | RS 67 75/L | – | |
| 69,8 | 82,5 | 10,5 | 9,5 | RU3000698 | – | RS 69.8 82.5/L | – | |
| 70,0 | 77,5 | 10,0 | 9,0 | RU3600700 | – | RS 70 77.5/L | – | |
| 70,0 | 78,0 | 12,5 | 11,5 | RU3700700 | – | RS 70 78/L | – | |
| 70,0 | 79,0 | 14,0 | 13,0 | RU3800700 | – | RS 70 79/L | – | |
| 70,0 | 80,0 | 12,5 | 11,5 | RU3900700 | – | RS 70 80/L | – |
| 70,0 | 80,0 | 13,0 | 12,0 | RU3300700 | D | RS 70 80/L1 | – | |
| 70,0 | 82,0 | 9,6 | 8,6 | RU3200700 | D | – | – | |
| 70,0 | 85,0 | 11,0 | 10,0 | RU3A00700 | D | – | – | |
| 70,0 | 85,0 | 12,0 | 11,0 | RU3400700 | D | – | – | |
| 70,0 | 85,0 | 12,5 | 11,5 | RU3000700 | D | RS 70 85/L | EU 7085/S | |
| * | 70,0 | 90,0 | 13,0 | 12,0 | RU3B00700 | – | RS 70 90/L | – |
| * | 70,0 | 90,0 | 16,0 | 15,0 | RU3100700 | D | – | – |
| 73,0 | 82,4 | 7,8 | 7,0 | RU3000730 | – | RS 73 82.4/L | – | |
| 75,0 | 83,0 | 12,5 | 11,5 | RU3400750 | – | RS 75 83/L | – | |
| 75,0 | 85,0 | 7,0 | 6,2 | RU3200750 | D | – | – | |
| 75,0 | 85,0 | 9,5 | 8,7 | RU3500750 | – | RS 75 85/L1 | – | |
| 75,0 | 85,0 | 11,0 | 10,0 | RU3300750 | D | RS 75 85/L2 | – | |
| 75,0 | 85,0 | 12,5 | 11,5 | RU3000750 | D | RS 75 85/L | – | |
| 75,0 | 85,0 | 13,0 | 12,0 | RU3100750 | D | – | – | |
| 75,0 | 90,0 | 13,0 | 12,0 | RU3600750 | D | – | – | |
| 76,0 | 86,0 | 12,5 | 11,5 | RU3000760 | D | – | – | |
| 76,2 | 88,9 | 10,5 | 9,5 | RU3000762 | – | RS 76.2 88.9/L | – | |
| 77,0 | 86,0 | 15,0 | 14,0 | RU3000770 | – | RS 77 86/L | – | |
| 78,0 | 86,0 | 12,5 | 11,5 | RU3000780 | D | RS 78 86/L1 | – | |
| 78,0 | 86,0 | 14,5 | 13,5 | RU3100780 | – | RS 78 86/L | – | |
| 78,0 | 88,0 | 13,0 | 12,0 | RU3200780 | – | RS 78 88/L | – | |
| ** | 78,0 | 88,0 | 15,0 | 14,3 | RU3300780 | – | – | EU 7888/S |
| 78,0 | 90,0 | 13,0 | 12,0 | RU3400780 | – | RS 78 90/L | – | |
| 79,4 | 88,9 | 10,5 | 9,5 | RU3000794 | – | RS 79.4 88.9/L | – | |
| 80,0 | 88,0 | 12,5 | 11,5 | RU3600800 | – | RS 80 88/L | – | |
| 80,0 | 90,0 | 8,0 | 7,3 | RU3300800 | D | – | – | |
| 80,0 | 90,0 | 11,0 | 10,0 | RU3400800 | D | – | – | |
| 80,0 | 90,0 | 12,5 | 11,5 | RU3200800 | D | – | – | |
| 80,0 | 90,0 | 13,0 | 12,0 | RU3500800 | D | – | EU 8090/S | |
| 80,0 | 95,0 | 11,0 | 10,0 | RU3700800 | D | – | – | |
| 80,0 | 95,0 | 12,5 | 11,5 | RU3000800 | D | – | – | |
| 80,0 | 95,0 | 13,0 | 12,0 | RU3800800 | D | – | EU 8095/S | |
| 80,0 | 100,0 | 13,0 | 12,0 | RU3900800 | – | EU 80100/S | ||
| 80,0 | 100,0 | 16,0 | 15,0 | RU3100800 | D | – | – | |
| 82,5 | 97,5 | 13,0 | 12,0 | RU3000825 | RS 82.5 97.5/L | – | ||
| 85,0 | 92,5 | 10,0 | 9,0 | RU3200850 | RS 85 92.5/L | – | ||
| 85,0 | 93,0 | 12,5 | 11,5 | RU3300850 | RS 85 93/L | – | ||
| 85,0 | 95,0 | 12,5 | 11,5 | RU3100850 | D | – | – | |
| 85,0 | 100,0 | 12,5 | 11,5 | RU3000850 | D | – | – | |
| 85,0 | 105,0 | 13,0 | 12,0 | RU3400850 | D | – | – | |
| 88,9 | 101,6 | 10,5 | 9,5 | RU3000889 | RS 88.9 101.6/L | – | ||
| 90,0 | 98,0 | 12,5 | 11,5 | RU3500900 | RS 90 98/L | – | ||
| 90,0 | 100,0 | 8,0 | 7,3 | RU3300900 | D | – | – | |
| 90,0 | 100,0 | 12,5 | 11,5 | RU3600900 | RS 90 100/L | – | ||
| 90,0 | 105,0 | 12,5 | 11,5 | RU3000900 | D | RS 90 105/L | – |
| 90,0 | 105,0 | 13,0 | 12,0 | RU3100900 | D | – | – | |
| 90,0 | 110,0 | 13,0 | 12,0 | RU3400900 | D | RS 90 110/L | – | |
| 90,0 | 110,0 | 16,0 | 15,0 | RU3200900 | D | – | – | |
| 93,0 | 101,0 | 12,5 | 11,5 | RU3000930 | D – |
RS 93 101/L | – | |
| 95,0 | 103,0 | 8,0 | 7,0 | RU3200950 | – | – | ||
| 95,0 | 103,0 | 12,5 | 11,5 | RU3300950 | RS 95 103/L | – | ||
| 95,0 | 105,0 | 9,5 | 8,7 | RU3400950 | – | RS 95 105/L1 | – | |
| 95,0 | 105,0 | 13,0 | 12,0 | RU3000950 | D | RS 95 105/L | EU 95105/S | |
| 95,0 | 110,0 | 13,0 | 12,0 | RU3100950 | D | – | – | |
| 95,0 | 115,0 | 13,0 | 12,0 | RU3500950 | D | – | – | |
| 97,0 | 105,0 | 12,5 | 11,5 | RU3000970 | – | RS 97 105/L1 | – | |
| 97,0 | 105,0 | 14,5 | 13,5 | RU3100970 | – | RS 97 105/L | – | |
| 97,0 | 106,0 | 15,0 | 14,0 | RU3200970 | – | RS 97 106/L | – | |
| 99,0 | 109,0 | 13,0 | 12,0 | RU3000990 | – | RS 99 109/L | – | |
| ** | 99,0 | 109,0 | 15,0 | 14,3 | RU3100990 | – | – | EU 99109/S |
| 100,0 | 108,0 | 12,5 | 11,5 | RU3401000 | – | RS 100 108/L | – | |
| 100,0 | 110,0 | 11,0 | 10,0 | RU3501000 | – | RS 100 110/L1 | – | |
| 100,0 | 110,0 | 12,5 | 11,5 | RU3601000 | – | RS 100 110/L | – | |
| 100,0 | 115,0 | 11,0 | 10,0 | RU3301000 | D | – | – | |
| 100,0 | 115,0 | 13,0 | 12,0 | RU3001000 | D | – | – | |
| 100,0 | 120,0 | 13,0 | 12,0 | RU3201000 | D | – | – | |
| 100,0 | 120,0 | 16,0 | 15,0 | RU3101000 | D | – | – | |
| 104,8 | 117,0 | 7,0 | 6,0 | RU3001048 | D | – | – | |
| 105,0 | 113,0 | 8,0 | 7,0 | RU3101050 | D | – | – | |
| 105,0 | 113,0 | 12,5 | 11,5 | RU3201050 | – | RS 105 113/L1 | – | |
| 105,0 | 113,0 | 14,5 | 13,5 | RU3301050 | – | RS 105 113/L | – | |
| 105,0 | 115,0 | 12,5 | 11,5 | RU3401050 | – | RS 105 115/L | – | |
| 105,0 | 115,0 | 13,0 | 12,0 | RU3501050 | – | – | EU 105115/S | |
| 105,0 | 120,0 | 10,0 | 9,2 | RU3001050 | D | – | – | |
| 110,0 | 118,0 | 12,5 | 11,5 | RU3301100 | – | RS 110 118/L | – | |
| 110,0 | 125,0 | 10,6 | 9,6 | RU3101100 | D | – | – | |
| 110,0 | 130,0 | 16,0 | 15,0 | RU3001100 | D | – | – | |
| 110,0 | 135,0 | 20,0 | 19,0 | RU3201100 | D | – | – | |
| 112,0 | 122,0 | 11,0 | 10,0 | RU3001120 | – | RS 112 122/L | – | |
| 113,0 | 123,0 | 9,5 | 8,7 | RU3001130 | – | RS 113 123/L1 | – | |
| 115,0 | 123,0 | 12,5 | 11,5 | RU3101150 | – | RS 115 123/L | – | |
| 115,0 | 125,0 | 13,0 | 12,0 | RU3201150 | – | RS 115 125/L1 | – | |
| 115,0 | 125,0 | 15,0 | 14,0 | RU3301150 | – | RS 115 125/L | – | |
| 115,0 | 130,0 | 11,0 | 10,0 | RU3401150 | – | RS 115 130/L | – | |
| 117,0 | 126,0 | 15,0 | 14,0 | RU3101170 | – | RS 117 126/L | – | |
| 117,0 | 133,0 | 10,0 | 9,2 | RU3001170 | D | – | – | |
| 117,8 | 133,0 | 10,0 | 9,2 | RU3001178 | D | – | – | |
| 118,0 | 126,0 | 12,5 | 11,5 | RU3001180 | – | RS 118 126/L1 | – | |
| 118,0 | 126,0 | 14,5 | 13,5 | RU3101180 | – | RS 118 126/L | – | |
| 120,0 | 128,0 | 12,5 | 11,5 | RU3101200 | – | RS 120 128/L | – |
| 120,0 | 130,0 | 12,5 | 11,5 | RU3201200 | – | RS 120 130/L | – | |
| 120,0 | 130,0 | 13,0 | 12,0 | RU3301200 | – | RS 120 130/L1 | – | |
| ** | 120,0 | 130,0 | 15,0 | 14,3 | RU3401200 | – | – | EU 120130/S |
| 120,0 | 140,0 | 16,0 | 15,0 | RU3001200 | D | – | – | |
| 121,0 | 135,0 | 10,0 | 9,0 | RU3001210 | – | RS 121 135/L | – | |
| 125,0 | 133,0 | 12,5 | 11,5 | RU3201250 | – | RS 125 133/L | – | |
| 125,0 | 135,0 | 11,0 | 10,0 | RU3301250 | – | RS 125 135/L | – | |
| 125,0 | 145,0 | 16,0 | 15,0 | RU3001250 | D | – | – | |
| 125,0 | 150,0 | 20,0 | 19,0 | RU3101250 | D | – | – | |
| 127,0 | 140,0 | 12,5 | 11,5 | RU3001270 | – | RS 127 140/L | – | |
| 128,0 | 136,0 | 12,5 | 11,5 | RU3001280 | – | RS 128 136/L | – | |
| 130,0 | 138,0 | 12,5 | 11,5 | RU3201300 | – | RS 130 138/L | – | |
| 130,0 | 150,0 | 13,5 | 12,5 | RU3001300 | D | – | – | |
| 130,0 | 150,0 | 16,0 | 15,0 | RU3101300 | D | – | – | |
| 131,0 | 150,0 | 14,0 | 13,0 | RU3001310 | – | RS 131 150/L | – | |
| 132,0 | 142,0 | 9,5 | 8,7 | RU3001320 | – | RS 132 142/L1 | – | |
| 135,0 | 143,0 | 12,5 | 11,5 | RU3001350 | – | RS 135 143/L | – | |
| 135,0 | 150,0 | 12,5 | 11,5 | RU3101350 | – | RS 135 150/L | – | |
| 135,0 | 150,0 | 16,0 | 15,0 | RU3201350 | – | RS 135 150/L1 | – | |
| 137,0 | 146,0 | 15,0 | 14,0 | RU3001370 | – | RS 137 146/L | – | |
| 139,8 | 156,0 | 7,0 | 6,0 | RU3001398 | D | – | – | |
| 140,0 | 148,0 | 12,5 | 11,5 | RU3301400 | – | RS 140 148/L | – | |
| 140,0 | 150,0 | 12,5 | 11,5 | RU3401400 | – | RS 140 150/L | – | |
| 140,0 | 155,0 | 10,6 | 9,6 | RU3101400 | D | – | – | |
| 140,0 | 160,0 | 16,0 | 15,0 | RU3001400 | D | – | – | |
| 140,0 | 165,0 | 20,0 | 19,0 | RU3201400 | D | – | – | |
| 141,0 | 151,0 | 13,0 | 12,0 | RU3001410 | – | RS 141 151/L | – | |
| ** | 141,0 | 151,0 | 15,0 | 14,3 | RU3101410 | – | – | EU 141151/S |
| 143,0 | 151,0 | 12,5 | 11,5 | RU3001430 | – | RS 143 151/L1 | – | |
| 143,0 | 151,0 | 14,5 | 13,5 | RU3101430 | – | RS 143 151/L | – | |
| 145,0 | 155,0 | 13,0 | 12,0 | RU3001450 | – | RS 145 155/L | – | |
| 145,0 | 160,0 | 13,0 | 12,0 | RU3101450 | – | RS 145 160/L | – | |
| 148,0 | 160,0 | 13,0 | 12,0 | RU3001480 | – | RS 148 160/L | – | |
| 150,0 | 170,0 | 16,0 | 15,0 | RU3001500 | D | – | – | |
| 152,0 | 160,0 | 12,5 | 11,5 | RU3001520 | – | RS 152 160/L | – | |
| 152,0 | 162,0 | 11,0 | 10,0 | RU3101520 | – | RS 152 162/L | – | |
| 152,0 | 171,0 | 12,5 | 11,5 | RU3201520 | – | RS 152 171/L | – | |
| 152,5 | 160,5 | 15,0 | 14,0 | RU3001525 | – | RS 152.5 160.5/L | – | |
| 155,0 | 163,0 | 12,5 | 11,5 | RU3001550 | – | RS 155 163/L | – | |
| 160,0 | 168,0 | 12,5 | 11,5 | RU3001600 | – | RS 160 168/L | – | |
| 160,0 | 170,0 | 12,5 | 11,5 | RU3101600 | – | RS 160 170/L | – | |
| 162,0 | 172,0 | 13,0 | 12,0 | RU3001620 | – | RS 162 172/L | – | |
| ** | 162,0 | 172,0 | 15,0 | 14,3 | RU3101620 | – | – | EU 162172/S |
| 165,0 | 184,0 | 14,0 | 13,0 | RU3001650 | – | RS 165 184/L | – | |
| 170,0 | 178,0 | 12,5 | 11,5 | RU3201700 | – | RS 170 178/L | – |
| 170,0 | 180,0 | 13,0 | 12,0 | RU3301700 | – | RS 170 180/L | – | |
| 170,0 | 190,0 | 16,0 | 15,0 | RU3001700 | D | – | – | |
| 171,0 | 179,0 | 12,5 | 11,5 | RU3001710 | – | RS 171 179/L | – | |
| 175,0 | 185,0 | 13,0 | 12,0 | RU3001750 | – | RS 175 185/L | – | |
| 177,0 | 205,0 | 20,0 | 19,0 | RU3001770 | – | RS 177 205/L | – | |
| 178,0 | 188,0 | 11,0 | 10,0 | RU3001780 | D | – | – | |
| 180,0 | 188,0 | 14,5 | 13,5 | RU3201800 | – | RS 180 188/L | – | |
| 180,0 | 190,0 | 11,0 | 10,0 | RU3301800 | – | RS 180 190/L | – | |
| 180,0 | 195,0 | 13,5 | 12,5 | RU3401800 | – | RS 180 195/L | – | |
| 180,0 | 200,0 | 16,0 | 15,0 | RU3101800 | D | – | – | |
| 180,0 | 205,0 | 16,0 | 15,0 | RU3001800 | D | – | – | |
| ** | 183,0 | 193,0 | 15,0 | 14,3 | RU3001830 | – | – | EU 183193/S |
| 185,0 | 193,0 | 12,5 | 11,5 | RU3001850 | – | RS 185 193/L | – | |
| 200,0 | 208,0 | 12,5 | 11,5 | RU3302000 | – | RS 200 208/L | – | |
| 200,0 | 220,0 | 11,5 | 10,5 | RU3102000 | D | – | – | |
| 200,0 | 225,0 | 16,0 | 15,0 | RU3002000 | D | – | – | |
| 205,0 | 220,0 | 13,5 | 12,5 | RU3002050 | – | RS 205 220/L | – | |
| ** | 207,0 | 217,0 | 15,0 | 14,3 | RU3002070 | – | – | EU 207217/S |
| 209,0 | 228,0 | 14,0 | 13,0 | RU3002090 | – | RS 209 228/L | – | |
| 212,0 | 220,0 | 14,5 | 13,5 | RU3002120 | – | RS 212 220/L | – | |
| 220,0 | 245,0 | 16,0 | 15,0 | RU3002200 | D | – | – | |
| ** | 231,0 | 242,0 | 15,0 | 14,3 | RU3002310 | – | – | EU 231241/S |
| 232,0 | 246,0 | 13,0 | 12,0 | RU3002320 | – | RS 232 246/L | – | |
| 235,0 | 254,0 | 11,5 | 10,0 | RU3002350 | D | – | – |
Ordering Example
U-Cup Type RU3
Rod diameter: d = 70.0 mm
Groove diameter: d1 = 85.0 mm
Groove width: L = 12.5 mm
Part No.: RU3000700 –
Material code
B+S: WUAQ3 turquoise
Sealing Parts: WU9L3 blue
Polypac: UAT60 red
Type RU3B
The U-Cup type RU3B is used as a rod seal for heavy-duty conditions in mobile and industrial hydraulics. It is installed with a fixed seat at its outer diameter. The rear dynamic sealing lip improves the leakage behaviour and, at the same time, prevents the entry of contaminants from the atmosphere side. Compared with the type RU2, the shorter inner lip is more flexible and can adapt better to the operating conditions and deflections of the piston rod.
U-Cup RU3B has integrated Back-up Ring to prevent the seal material from extrusion at high temperatures and high peak pressures.
A lubricant trap forms between the sealing lips. This counters the stick-slip tendency and prevents dry running. At the same time the good lubrication behaviour reduces wear.
Advantages
– Good sealing effect
– Good abrasion resistance, wear-resistant
– Compensates deflections of the piston rod
– Entry of dirt and air into the system is more or less ruled out
– Unaffected by sudden loads and high pressures
– Good extrusion resistance
– Larger sealing gaps
(approx. 50% larger than table XXVII values)
– Suitable for high pressure peaks
Material
The thermoplastic polyurethane material used for U-Cups has a high abrasion resistance, a low compression set and exhibits a high resistance to clearance extrusion.
U-Cup material:
WU9L3 blue color
Back-up ring material:
Polyamid PA
Material set code:
WUR0L
| Note | Rod Diameter | Groove Diameter | Groove Width | Seal Width | Part No. | Sealing Parts Ref. No. |
| dN h11 | D1 H11 | L +0.2 | B | |||
| * | 40,0 | 55,0 | 11,0 | 10,0 | RU30B0400 | RS 40 55/LA |
| 42,0 | 51,0 | 11,0 | 10,0 | RU30B0420 | RS 42 51/LA | |
| 45,0 | 52,0 | 14,0 | 13,0 | RU30B0450 | RS 45 52/LA | |
| * | 50,0 | 59,0 | 11,0 | 10,0 | RU30B0500 | RS 50 59/LA |
| 50,0 | 60,0 | 8,0 | 7,2 | RU31B0500 | RS 50 60/LA | |
| 50,0 | 65,0 | 11,0 | 10,0 | RU32B0500 | RS 50 65/LA | |
| * | 50,0 | 70,0 | 13,0 | 12,0 | RU33B0500 | RS 50 70/LA |
| * | 60,0 | 68,0 | 14,0 | 13,0 | RU30B0600 | RS 60 68/LA |
| 60,0 | 69,0 | 11,0 | 10,0 | RU31B0600 | RS 60 69/LA | |
| 60,0 | 80,0 | 13,0 | 12,0 | RU32B0600 | RS 60 80/LA | |
| 63,0 | 83,0 | 13,0 | 12,0 | RU30B0630 | RS 63 83/LA | |
| 70,0 | 80,0 | 8,0 | 7,2 | RU30B0700 | RS 70 80/LA | |
| 70,0 | 85,0 | 12,5 | 11,5 | RU31B0700 | RS 70 85/LA | |
| 78,0 | 86,0 | 14,0 | 13,0 | RU30B0780 | RS 78 86/LA | |
| 80,0 | 95,0 | 12,5 | 11,5 | RU30B0800 | RS 80 95/LA | |
| ** | 97,0 | 105,0 | 14,0 | 13,0 | RU30B0970 | RS 97 105/LA |
| 100,0 | 120,0 | 14,5 | 13,5 | RU30B1000 | RS 100 120/LA | |
| 105,0 | 125,0 | 13,0 | 12,0 | RU30B1050 | RS 105 125/LA | |
| ** | 118,0 | 126,0 | 14,0 | 13,0 | RU30B1180 | RS 118 126/LA |
| 120,0 | 140,0 | 13,0 | 12,0 | RU30B1200 | RS 120 140/LA | |
| 125,0 | 145,0 | 13,0 | 12,0 | RU30B1250 | RS 125 145/LA | |
| ** | 143,0 | 151,0 | 14,0 | 13,0 | RU30B1430 | RS 143 151/LA |
| ** | 171,0 | 179,0 | 14,0 | 13,0 | RU30B1710 | RS 171 179/LA |
Ordering example
U-Cup Type RU3B
Rod diameter: dN = 50.0 mm
Groove diameter: d1 = 65.0 mm
Groove width: L = 11 mm
Part No.: RU32B0500 –
Compound: WUR0L blue color
Beoordelingen
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