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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Item#:
BS-18701437-312

1.437 x 1.812 x 0.312 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-1.437 OD-1.812 HT-0.312

SPEC SHEET

Available:
30.00
Your Price:
13.70
Each
Item#:
BS-18701500-250

1.5 x 1.875 x 0.25 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-1.5 OD-1.875 HT-0.25

SPEC SHEET

Available:
98.00
Your Price:
11.64
Each
Item#:
BS-18701500-312

1.5 x 1.875 x 0.312 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-1.5 OD-1.875 HT-0.312

SPEC SHEET

Available:
182.00
Your Price:
11.64
Each
Item#:
BS-18701500-375

1.5 x 1.875 x 0.375 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-1.5 OD-1.875 HT-0.375

SPEC SHEET

Available:
138.00
Your Price:
11.64
Each
Item#:
BS-18701625-281

1.625 x 2 x 0.281 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-1.625 OD-2 HT-0.281

SPEC SHEET

Available:
55.00
Your Price:
14.52
Each
Item#:
BS-18701625-312

1.625 x 2 x 0.312 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-1.625 OD-2 HT-0.312

SPEC SHEET

Available:
50.00
Your Price:
14.91
Each
Item#:
BS-18701625-375

1.625 x 2 x 0.375 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-1.625 OD-2 HT-0.375

SPEC SHEET

Available:
61.00
Your Price:
10.92
Each
Item#:
BS-18701750-250

1.75 x 2.125 x 0.25 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-1.75 OD-2.125 HT-0.25

SPEC SHEET

Available:
75.00
Your Price:
11.07
Each
Item#:
BS-18701750-312

1.75 x 2.125 x 0.312 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-1.75 OD-2.125 HT-0.312

SPEC SHEET

Available:
118.00
Your Price:
12.79
Each
Item#:
BS-18701750-375

1.75 x 2.125 x 0.375 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-1.75 OD-2.125 HT-0.375

SPEC SHEET

Available:
343.00
Your Price:
10.35
Each
Item#:
BS-18701750-375-B

1.75 x 2.125 x 0.375 Polyurethane Double Lip Rod Seal w/Back Up Inch

Hydraulic SealAlternative Seals:
Rod: BD, MA30B

ID-1.75 OD-2.125 HT-0.375
SPEC SHEET

Available:
5.00
Your Price:
15.45
Each
Item#:
BS-18701875-375

1.875 x 2.25 x 0.375 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-1.875 OD-2.25 HT-0.375

SPEC SHEET

Available:
76.00
Your Price:
11.09
Each
Item#:
BS-18702000-250

2 x 2.375 x 0.25 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-2 OD-2.375 HT-0.25

SPEC SHEET

Available:
138.00
Your Price:
11.09
Each
Item#:
BS-18702000-312

2 x 2.375 x 0.312 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-2 OD-2.375 HT-0.312

SPEC SHEET

Available:
186.00
Your Price:
14.23
Each
Item#:
BS-18702000-375

2 x 2.375 x 0.375 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-2 OD-2.375 HT-0.375

SPEC SHEET

Available:
159.00
Your Price:
13.81
Each
Item#:
BS-18702125-375

2.125 x 2.5 x 0.375 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-2.125 OD-2.5 HT-0.375

SPEC SHEET

Available:
45.00
Your Price:
13.93
Each
Item#:
BS-18702250-335

2.25 x 2.625 x 0.335 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-2.25 OD-2.625 HT-0.335

SPEC SHEET

Available:
33.00
Your Price:
18.38
Each
Item#:
BS-18702250-375

2.25 x 2.625 x 0.375 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-2.25 OD-2.625 HT-0.375

SPEC SHEET

Available:
198.00
Your Price:
19.32
Each
Item#:
BS-18702375-375

2.375 x 2.75 x 0.375 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-2.375 OD-2.75 HT-0.375

SPEC SHEET

Available:
18.00
Your Price:
14.63
Each
Item#:
BS-18702500-312

2.5 x 2.875 x 0.312 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-2.5 OD-2.875 HT-0.312

SPEC SHEET

Available:
58.00
Your Price:
16.59
Each
Item#:
BS-18702500-375

2.5 x 2.875 x 0.375 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-2.5 OD-2.875 HT-0.375

SPEC SHEET

Available:
13.00
Your Price:
16.03
Each
Item#:
BS-18702625-375

2.625 x 3 x 0.375 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-2.625 OD-3 HT-0.375

SPEC SHEET

Available:
21.00
Your Price:
15.45
Each
Item#:
BS-18702750-375

2.75 x 3.125 x 0.375 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-2.75 OD-3.125 HT-0.375

SPEC SHEET

Available:
0.00
ETA:
08/14/2026
Your Price:
15.84
Each
Item#:
BS-18702875-375

2.875 x 3.25 x 0.375 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-2.875 OD-3.25 HT-0.375

SPEC SHEET

Available:
27.00
Your Price:
21.07
Each
Item#:
BS-18703000-375

3 x 3.375 x 0.375 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-3 OD-3.375 HT-0.375

SPEC SHEET

Available:
209.00
Your Price:
17.69
Each
Item#:
BS-18703125-625

3.125 x 3.5 x 0.625 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-3.125 OD-3.5 HT-0.625

SPEC SHEET

Available:
15.00
Your Price:
22.17
Each
Item#:
BS-18703250-375

3.25 x 3.625 x 0.375 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-3.25 OD-3.625 HT-0.375

SPEC SHEET

Available:
20.00
Your Price:
22.59
Each
Item#:
BS-18703250-562

3.25 x 3.625 x 0.562 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-3.25 OD-3.625 HT-0.562

SPEC SHEET

Available:
14.00
Your Price:
23.10
Each
Item#:
BS-18703500-375

3.5 x 3.875 x 0.375 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-3.5 OD-3.875 HT-0.375

SPEC SHEET

Available:
17.00
Your Price:
23.27
Each
Item#:
BS-18703750-375

3.75 x 4.125 x 0.375 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-3.75 OD-4.125 HT-0.375

SPEC SHEET

Available:
19.00
Your Price:
25.73
Each
Item#:
BS-18704000-375

4 x 4.375 x 0.375 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-4 OD-4.375 HT-0.375

SPEC SHEET

Available:
15.00
Your Price:
27.34
Each
Item#:
BS-18704750-375

4.75 x 5.125 x 0.375 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-4.75 OD-5.125 HT-0.375

SPEC SHEET

Available:
20.00
Your Price:
27.26
Each
Item#:
BS-18704750-625

4.75 x 5.125 x 0.625 Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-4.75 OD-5.125 HT-0.625

SPEC SHEET

Available:
25.00
Your Price:
35.72
Each
Item#:
BS-18705500-375

5.5 x 5.875 x .375Polyurethane Double Lip Rod U-Cup Inch

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-5.5 OD-5.875 HT-0.375

SPEC SHEET

Available:
34.00
Your Price:
36.01
Each
Item#:
BS-18705795-375

5.795 x 6.17 x .375" Polyurethane Double Lip Rod U-Cup Inch

Bevelled LLS Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-5.795 OD-6.17 HT-0.375

SPEC SHEET

Available:
3.00
Your Price:
49.46
Each
Item#:
BS-18X24X4.9

18 x 24 x 4.9 Polyurethane Double Lip Rod U-Cup Metric

BS UCup Alternative Seals:
Rod: DZ, Deep LLS, UNRR, BD, BSLL, BS-B, BT, UNR, US, BLLS

ID-18 OD-24 HT-4.9

SPEC SHEET

Available:
42.00
Your Price:
11.43
Each
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