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U Cups
The u cup is ideal for use on linear moving shafts and piston heads, because unlike an O-ring the shape does not try to roll with the movement and create friction.
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6226 - NITRILE SYMMETRICAL (AN) U-CUP - INCH (69)
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8400 - NITRILE SYMMETRICAL U-CUP - INCH (131)
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BD - DOUBLE LIP O-RING LOADED ROD SEAL w/BACKUP - INCH (68)
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BD - DOUBLE LIP O-RING LOADED ROD SEAL w/BACKUP -METRIC (114)
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BP - DOUBLE LIP ORING LOADED URETHANE PISTON SEAL -INCH (10)
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BS - DOUBLE LIP URETHANE ROD SEAL - INCH (224)
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BS - DOUBLE LIP URETHANE ROD SEAL - METRIC (395)
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BS-B - URETHANE DOUBLE LIP ROD SEAL w/POM BACKUP - INCH (8)
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BS-B -URETHANE DBL LIP ROD SEAL w/POM BU-METRIC (22)
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BSLL - DOUBLE LIP ORING LOADED URETHANE ROD SEAL - INCH (29)
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BT - 4300® HIGH TEMP DOUBLE LIP ROD U-CUP - INCH (27)
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C1 - NITRILE ASYMMETRICAL ROD U-CUP - METRIC (79)
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C2 - NITRILE ASYMMETRICAL PISTON U-CUP - METRIC (40)
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DZ - DEEP Z ROD SEAL - INCH (21)
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MA20 - NITRILE U-CUP w/STEPPED NYLON HEEL - METRIC (18)
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MA21 - NITRILE SYMMETRICAL PISTON or ROD U-CUP - METRIC (61)
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MA22 - NITRILE SYMMETRICAL PISTON or ROD U-CUP - METRIC (21)
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MA23 - NITRILE ASYMMETRICAL PISTON U-CUP - METRIC (9)
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MA24 - NITRILE ASYMMETRICAL ROD U-CUP - METRIC (16)
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MA25 - URETHANE SYMMETRICAL ROD/PISTON U-CUP - METRIC (544)
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MA28 - URETHANE ASYMMETRICAL PISTON U-CUP-METRIC (121)
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MA28B/UNP Piston U-CUP w/OD BACKUP INCH & METRIC (23)
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MA30 - URETHANE ASYMMETRICAL ROD SEAL - METRIC (239)
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MA30B-URETHANE ROD SEAL w/NYLON BACKUP - METRIC (16)
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MA35 - URETHANE SYMMETRICAL DOUBLE LIP ROD SEAL -METRIC (61)
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MLLB - BEVELED O-RING LOADED LIP SEAL - METRIC (28)
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MUPH - NITRILE ASYMMETRICAL PISTON U-CUP - METRIC (29)
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MURH - NITRILE ASYMMETRICAL ROD U-CUP - METRIC (22)
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OUY - NITRILE PISTON U-CUP w/POM BACKUP - METRIC (8)
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POLYPAK®/ DEEP O-RING LOADED LIP SEAL - INCH (533)
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POLYPAK®/BEVELED O-RING LOADED LIP SEAL - INCH (1012)
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POLYPAK®/STANDARD O-RING LOADED LIP SEAL - INCH (941)
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PR - PIP RING (PRESSURE INVERTING PEDESTAL RING) - INCH (65)
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RSE- URE PISTON U-CUP w/STEPPED BACKUP/BEARING- Metric (39)
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UCF - FABRIC REINFORCED NITRILE U-CUP - INCH (37)
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UCH - NITRILE NON-STANDARD HOMOGENEOUS U-CUP - INCH (39)
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UCL - LEATHER U-CUP w/NITRILE FILLER - INCH (15)
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UNP - AN - THIN LIP URETHANE PISTON U-CUP - INCH (11)
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UNP - URETHANE ASYMMETRICAL PISTON U-CUP - INCH (76)
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UNR - URETHANE ASYMMETRICAL ROD SEAL - INCH (34)
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UNRR - POLYURETHANE RIBBED ROD SEAL - INCH (13)
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UNRR - POLYURETHANE RIBBED ROD SEAL-METRIC (13)
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US- URETHANE SYMMETRICAL ROD or PISTON U-CUP - INCH (163)
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W1-3PC NBR/POM/TFE HGH PRESSURE POWERWASHER SEAL-METRIC (13)
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W2 - 1PC NBR/FAB LOW PRESSURE POWERWASHER SEAL - METRIC (7)
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W3 - 2 PC LOW PRESSURE POWERWASHER SEAL - METRIC (4)
ID-10.25 OD-11 HT-0.5
Available:
0.00
Item is no longer available.
This item has been replaced by
37510250-500B
Item#:
37510250-625
Rod: DZ, UNRR, BSLL, BLLS, US, UNR, BS, BT, BD
Piston: UNP, UNP-AN, US, BP
ID-10.25 OD-11 HT-0.625
SPEC SHEET
Available:
23.00
Your Price:
168.14
Each
Item#:
37510250-625LLS
ID-10.25 OD-11 HT-0.625
Available:
0.00
Item is no longer available.
This item has been replaced by
37510250-625
ID-10.25 OD-11 HT-0.75
Available:
0.00
Item is no longer available.
This item has been replaced by
37510250-750BLLS
Rod: Deep LLS, UNRR, LLS BD, BSLL, BS-B, BS, BT, UNR, US, DZ
ID-10.25 OD-11 HT-0.75
SPEC SHEET
Available:
1.00
Your Price:
168.97
Each
Item#:
37510250LLS
Rod: US, 8400, 6226, DZ, BS-B, BLLS, UNRR, UNR, BS, BD, BT, BSLL
Piston: UNP-AN, US, UNP, BP
ID-10.25 OD-11 HT-0.375
Available:
11.00
Your Price:
126.44
Each
Rod: US, 8400, 6226, DZ, BS-B, BLLS, UNRR, UNR, BS, BD, BT, BSLL
Piston: UNP-AN, US, UNP, BP
ID-10.5 OD-11.25 HT-0.375
Available:
5.00
Your Price:
128.09
Each
Rod: Deep LLS, UNRR, LLS BD, BSLL, BS-B, BS, BT, UNR, US, DZ
ID-10.5 OD-11.25 HT-0.375
SPEC SHEET
Available:
0.00
Contact us to order
Item#:
37510500-625
Rod: DZ, UNRR, BSLL, BLLS, US, UNR, BS, BT, BD
Piston: UNP, UNP-AN, US, BP
ID-10.5 OD-11.25 HT-0.625
SPEC SHEET
Available:
13.00
Your Price:
173.53
Each
Rod: Deep LLS, UNRR, LLS BD, BSLL, BS-B, BS, BT, UNR, US, DZ
ID-10.5 OD-11.25 HT-0.625
SPEC SHEET
Available:
11.00
Your Price:
159.64
Each
ID-10.5 OD-11.25 HT-0.625
Available:
0.00
Item is no longer available.
This item has been replaced by
37510500-625B
Item#:
37510500-625LLS
ID-10.5 OD-11.25 HT-0.625
Available:
0.00
Item is no longer available.
This item has been replaced by
37510500-625
Item#:
37510500LLS
Rod: US, 8400, 6226, DZ, BS-B, BLLS, UNRR, UNR, BS, BD, BT, BSLL
Piston: UNP-AN, US, UNP, BP
ID-10.5 OD-11.25 HT-0.375
Available:
0.00
Contact us to order
Rod: US, 8400, 6226, DZ, BS-B, BLLS, UNRR, UNR, BS, BD, BT, BSLL
Piston: UNP-AN, US, UNP, BP
ID-10.75 OD-11.5 HT-0.375
Available:
25.00
Your Price:
129.24
Each
Item#:
37510750-625
Rod: DZ, UNRR, BSLL, BLLS, US, UNR, BS, BT, BD
Piston: UNP, UNP-AN, US, BP
ID-10.75 OD-11.5 HT-0.625
SPEC SHEET
Available:
5.00
Your Price:
180.47
Each
ID-10.75 OD-11.5 HT-0.625
Available:
0.00
Item is no longer available.
This item has been replaced by
37510750-625BLLS
Rod: Deep LLS, UNRR, LLS BD, BSLL, BS-B, BS, BT, UNR, US, DZ
ID-10.75 OD-11.5 HT-0.625
SPEC SHEET
Available:
17.00
Your Price:
183.50
Each
Item#:
37510750-625LLS
ID-10.75 OD-11.5 HT-0.625
Available:
0.00
Item is no longer available.
This item has been replaced by
37510750-625
Item#:
37510750LLS
Rod: US, 8400, 6226, DZ, BS-B, BLLS, UNRR, UNR, BS, BD, BT, BSLL
Piston: UNP-AN, US, UNP, BP
ID-10.75 OD-11.5 HT-0.375
Available:
0.00
Contact us to order
Rod: US, 8400, 6226, DZ, BS-B, BLLS, UNRR, UNR, BS, BD, BT, BSLL
Piston: UNP-AN, US, UNP, BP
ID-11 OD-11.75 HT-0.375
Available:
0.00
Contact us to order
Item#:
37511000LLS
Rod: US, 8400, 6226, DZ, BS-B, BLLS, UNRR, UNR, BS, BD, BT, BSLL
Piston: UNP-AN, US, UNP, BP
ID-11 OD-11.75 HT-0.375
Available:
0.00
ETA:
05/22/2026
Your Price:
132.50
Each
Alternative Seals:
Rod:US, 8400, 6226, DZ, BS-B, BLLS, UNRR, UNR, BS, BD, BT, BSLL
Piston: UNP-AN, US, UNP, BP
Available:
0.00
Item is no longer available.
This item has been replaced by
37511250LLS
Rod: Deep LLS, UNRR, LLS BD, BSLL, BS-B, BS, BT, UNR, US, DZ
ID-11.25 OD-12 HT-0.375
SPEC SHEET
Available:
20.00
Your Price:
137.48
Each
Item#:
37511250-625
Rod: DZ, UNRR, BSLL, BLLS, US, UNR, BS, BT, BD
Piston: UNP, UNP-AN, US, BP
ID-11.25 OD-12 HT-0.625
SPEC SHEET
Available:
11.00
Your Price:
213.91
Each
ID-11.25 OD-12 HT-0.625
Available:
0.00
Item is no longer available.
This item has been replaced by
37511250-625BLLS
Rod: Deep LLS, UNRR, LLS BD, BSLL, BS-B, BS, BT, UNR, US, DZ
ID-11.25 OD-12 HT-0.625
SPEC SHEET
Available:
17.00
Your Price:
141.21
Each
Item#:
37511250-625LLS
ID-11.25 OD-12 HT-0.625
Available:
0.00
Item is no longer available.
This item has been replaced by
37511250-625
Item#:
37511250LLS
Rod: US, 8400, 6226, DZ, BS-B, BLLS, UNRR, UNR, BS, BD, BT, BSLL
Piston: UNP-AN, US, UNP, BP
ID-11.25 OD-12 HT-0.375
Available:
9.00
Your Price:
106.31
Each
ID-11.5 OD-12.25 HT-0.375
Available:
0.00
Item is no longer available.
This item has been replaced by
37511500LLS
Item#:
37511500-625
Rod: DZ, UNRR, BSLL, BLLS, US, UNR, BS, BT, BD
Piston: UNP, UNP-AN, US, BP
ID-11.5 OD-12.25 HT-0.625
SPEC SHEET
Available:
3.00
Your Price:
194.94
Each
Item#:
37511500-625B
Available:
6.00
Your Price:
193.62
Each
Item#:
37511500-625LLS
ID-11.5 OD-12.25 HT-0.625
Available:
0.00
Item is no longer available.
This item has been replaced by
37511500-625
Item#:
37511500LLS
Rod: US, 8400, 6226, DZ, BS-B, BLLS, UNRR, UNR, BS, BD, BT, BSLL
Piston: UNP-AN, US, UNP, BP
ID-11.5 OD-12.25 HT-0.375
Available:
5.00
Your Price:
138.14
Each
Rod: US, 8400, 6226, DZ, BS-B, BLLS, UNRR, UNR, BS, BD, BT, BSLL
Piston: UNP-AN, US, UNP, BP
ID-11.75 OD-12.5 HT-0.375
Available:
0.00
Contact us to order
ID-11.75 OD-12.5 HT-0.625
Available:
0.00
Item is no longer available.
This item has been replaced by
37511750-625BLLS
Rod: Deep LLS, UNRR, LLS BD, BSLL, BS-B, BS, BT, UNR, US, DZ
ID-11.75 OD-12.5 HT-0.625
SPEC SHEET
Available:
4.00
Your Price:
181.37
Each