CBR/CTB - CAT®/CASE® U-CUP BUFFER RING - INCH

U-cup type buffer rings are made in sizes to retrofit many Case® grooves, and are easy to install. They are designed for systems running high pressures or susceptible to pressure spikes. The sealing element is made from 90 durometer urethane and the anti-extrusion ring is made from POM. Metric sizes retrofit the stepped buffer ring grooves. Inch sizes below 2.25” do not have backup rings. Temperature: -22°F to 230°F Pressure: 0 to 5800 psi

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Item#:
CBR-1250

1.25 x 1.812 x 0.14 Case® Replacement Urethane/POM U-Cup Buffer Ring Inch

Hydraulic SealAlternative Seals: Rectangular Buffer Rings, AS2 Step Buffer Rings, BU, MBRU

ID-1.25 OD-1.812 HT-0.14
SPEC SHEET

Available:
19.00
Your Price:
16.23
Each
Item#:
CBR-1500

1.5 x 2.062 x 0.14 Case® Replacement Urethane/POM U-Cup Buffer Ring Inch

Hydraulic SealAlternative Seals: Rectangular Buffer Rings, AS2 Step Buffer Rings, BU, MBRU

ID-1.5 OD-2.062 HT-0.14
SPEC SHEET

Available:
61.00
Your Price:
16.65
Each
Item#:
CBR-1750

1.75 x 2.312 x 0.14 Case® Replacement Urethane/POM U-Cup Buffer Ring Inch

Hydraulic SealAlternative Seals: Rectangular Buffer Rings, AS2 Step Buffer Rings, BU, MBRU

ID-1.75 OD-2.312 HT-0.14
SPEC SHEET

Available:
63.00
Your Price:
17.07
Each
Item#:
CBR-2000

2 x 2.562 x 0.14 Case® Replacement Urethane/POM U-Cup Buffer Ring Inch

Hydraulic SealAlternative Seals: Rectangular Buffer Rings, AS2 Step Buffer Rings, BU, MBRU

ID-2 OD-2.562 HT-0.14
SPEC SHEET

Available:
81.00
Your Price:
21.73
Each
Item#:
CBR-2250

2.25 x 2.937 x .234 Case® Replacement Urethane/POM U-Cup Buffer Ring Inch

Hydraulic SealAlternative Seals: Rectangular Buffer Rings, AS2 Step Buffer Rings, BU, MBRU

ID-2.25 OD-2.937 HT-0.234
SPEC SHEET

Available:
68.00
Your Price:
24.08
Each
Item#:
CBR-2500

2.5 x 3.187 x .234 Case® Replacement Urethane/POM U-Cup Buffer Ring Inch

Hydraulic SealAlternative Seals: Rectangular Buffer Rings, AS2 Step Buffer Rings, BU, MBRU

ID-2.5 OD-3.187 HT-0.234
SPEC SHEET

Available:
166.00
Your Price:
25.90
Each
Item#:
CBR-2750

2.75 x 3.375 x .234 Case® Replacement Urethane/POM U-Cup Buffer Ring Inch

Hydraulic SealAlternative Seals: Rectangular Buffer Rings, AS2 Step Buffer Rings, BU, MBRU

ID-2.75 OD-3.375 HT-0.234
SPEC SHEET

Available:
47.00
Your Price:
28.53
Each
Item#:
CBR-3000

3 x 3.625 x .234 Case® Replacement Urethane/POM U-Cup Buffer Ring Inch

Hydraulic SealAlternative Seals: Rectangular Buffer Rings, AS2 Step Buffer Rings, BU, MBRU

ID-3 OD-3.625 HT-0.234
SPEC SHEET

Available:
55.00
Your Price:
30.74
Each
Item#:
CBR-3500

3.5 x 4.185 x .234 Case® Replacement Urethane/POM U-Cup Buffer Ring Inch

Hydraulic SealAlternative Seals: Rectangular Buffer Rings, AS2 Step Buffer Rings, BU, MBRU

ID-3.5 OD-4.185 HT-0.234
SPEC SHEET

Available:
57.00
Your Price:
36.57
Each
Item#:
CBR-4000

4 x 4.625 x .234 Case® Replacement Urethane/POM U-Cup Buffer Ring Inch

Hydraulic SealAlternative Seals: Rectangular Buffer Rings, AS2 Step Buffer Rings, BU, MBRU

ID-4 OD-4.625 HT-0.234
SPEC SHEET

Available:
87.00
Your Price:
49.00
Each
Item#:
CTB-1500

1.5 x 2.033 x 0.14 Cat® Replacement Urethane/POM U-Cup Buffer Ring Inch

Hydraulic SealAlternative Seals: Rectangular Buffer Rings, AS2 Step Buffer Rings, BU, MBRU

ID-1.5 OD-2.033 HT-0.14
SPEC SHEET

Available:
0.00
ETA:
03/06/2026
Your Price:
9.70
Each
Item#:
CTB-1750

1.75 x 2.283 x 0.14 Cat® Replacement Urethane/POM U-Cup Buffer Ring Inch

Hydraulic SealAlternative Seals: Rectangular Buffer Rings, AS2 Step Buffer Rings, BU, MBRU

ID-1.75 OD-2.283 HT-0.14
SPEC SHEET

Available:
26.00
Your Price:
9.70
Each
Item#:
CTB-1875

1.875 x 2.252 x 0.14 Cat® Replacement Urethane/POM U-Cup Buffer Ring Inch

Hydraulic SealAlternative Seals: Rectangular Buffer Rings, AS2 Step Buffer Rings, BU, MBRU

ID-1.875 OD-2.252 HT-0.14
SPEC SHEET

Available:
9.00
Your Price:
14.08
Each
Item#:
CTB-2000

2 x 2.533 x 0.14 Cat® Replacement Urethane/POM U-Cup Buffer Ring Inch

Hydraulic SealAlternative Seals: Rectangular Buffer Rings, AS2 Step Buffer Rings, BU, MBRU

ID-2 OD-2.533 HT-0.14
SPEC SHEET

Available:
25.00
Your Price:
21.92
Each
Item#:
CTB-2125

2.125 x 2.627 x 0.14 Cat® Replacement Urethane/POM U-Cup Buffer Ring Inch

Hydraulic SealAlternative Seals: Rectangular Buffer Rings, AS2 Step Buffer Rings, BU, MBRU

ID-2.125 OD-2.627 HT-0.14
SPEC SHEET

Available:
35.00
Your Price:
9.40
Each
Item#:
CTB-2250

2.25 x 2.891 x 0.22 Cat® Replacement Urethane/POM U-Cup Buffer Ring Inch

Hydraulic SealAlternative Seals: Rectangular Buffer Rings, AS2 Step Buffer Rings, BU, MBRU

ID-2.25 OD-2.891 HT-0.22
SPEC SHEET

Available:
43.00
Your Price:
14.13
Each
Item#:
CTB-2375

2.375 x 3.016 x 0.22 Cat® Replacement Urethane/POM U-Cup Buffer Ring Inch

Hydraulic SealAlternative Seals: Rectangular Buffer Rings, AS2 Step Buffer Rings, BU, MBRU

ID-2.375 OD-3.016 HT-0.22
SPEC SHEET

Available:
6.00
Your Price:
11.48
Each
Item#:
CTB-2500

2.5 x 3.141 x 0.22 Cat® Replacement Urethane/POM U-Cup Buffer Ring Inch

Hydraulic SealAlternative Seals: Rectangular Buffer Rings, AS2 Step Buffer Rings, BU, MBRU

ID-2.5 OD-3.141 HT-0.22
SPEC SHEET

Available:
67.00
Your Price:
14.85
Each
Item#:
CTB-2750

2.75 x 3.391 x 0.22 Cat® Replacement Urethane/POM U-Cup Buffer Ring Inch

Hydraulic SealAlternative Seals: Rectangular Buffer Rings, AS2 Step Buffer Rings, BU, MBRU

ID-2.75 OD-3.391 HT-0.22
SPEC SHEET

Available:
12.00
Your Price:
13.04
Each
Item#:
CTB-3000

3 x 3.641 x 0.22 Cat® Replacement Urethane/POM U-Cup Buffer Ring Inch

Hydraulic SealAlternative Seals: Rectangular Buffer Rings, AS2 Step Buffer Rings, BU, MBRU

ID-3 OD-3.641 HT-0.22
SPEC SHEET

Available:
36.00
Your Price:
12.15
Each
Item#:
CTB-3250

3.25 x 3.891 x 0.22 Cat® Replacement Urethane/POM U-Cup Buffer Ring Inch

Hydraulic SealAlternative Seals: Rectangular Buffer Rings, AS2 Step Buffer Rings, BU, MBRU

ID-3.25 OD-3.891 HT-0.22
SPEC SHEET

Available:
6.00
Your Price:
16.87
Each
Item#:
CTB-3500

3.5 x 4.141 x 0.22 Cat® Replacement Urethane/POM U-Cup Buffer Ring Inch

Hydraulic SealAlternative Seals: Rectangular Buffer Rings, AS2 Step Buffer Rings, BU, MBRU

ID-3.5 OD-4.141 HT-0.22
SPEC SHEET

Available:
29.00
Your Price:
14.85
Each
Item#:
CTB-3750

3.75 x 4.391 x 0.22 Cat® Replacement Urethane/POM U-Cup Buffer Ring Inch

Hydraulic SealAlternative Seals: Rectangular Buffer Rings, AS2 Step Buffer Rings, BU, MBRU

ID-3.75 OD-4.391 HT-0.22
SPEC SHEET

Available:
40.00
Your Price:
15.23
Each
Item#:
CTB-4000

4 x 4.641 x 0.22 Cat® Replacement Urethane/POM U-Cup Buffer Ring Inch

Hydraulic SealAlternative Seals: Rectangular Buffer Rings, AS2 Step Buffer Rings, BU, MBRU

ID-4 OD-4.641 HT-0.22
SPEC SHEET

Available:
22.00
Your Price:
17.41
Each
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