A back-up ring is a rigid ring that holds an elastomeric seal or plastic (such as Polyethylene) connection to its designed shape and in its correct place. Back up rings are commonly used with O-rings, lip seals, and as reciprocating shaft seals

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Item#:
MS28774-243

4.125 x 4.375 x 0.05 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-4.125 OD-4.375 HT-0.05
SPEC SHEET

Available:
13.00
Your Price:
11.18
Each
Item#:
MS28774-244

4.25 x 4.5 x 0.05 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-4.25 OD-4.5 HT-0.05
SPEC SHEET

Available:
17.00
Your Price:
11.69
Each
Item#:
MS28774-245

4.375 x 4.625 x 0.05 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-4.375 OD-4.625 HT-0.05
SPEC SHEET

Available:
11.00
Your Price:
12.05
Each
Item#:
MS28774-246

4.5 x 4.75 x 0.05 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-4.5 OD-4.75 HT-0.05
SPEC SHEET

Available:
65.00
Your Price:
12.43
Each
Item#:
MS28774-247

4.625 x 4.875 x 0.05 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-4.625 OD-4.875 HT-0.05
SPEC SHEET

Available:
47.00
Your Price:
13.04
Each
Item#:
MS28774-271

9.25 x 9.5 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-9.25 OD-9.5 HT-0.07
SPEC SHEET

Available:
25.00
Your Price:
54.28
Each
Item#:
MS28774-272

9.5 x 9.75 x .05 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-9.5 OD-9.75 HT-0.05
SPEC SHEET

Available:
15.00
Your Price:
55.65
Each
Item#:
MS28774-276

11 x 11.278 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-11 OD-11.278 HT-0.07
SPEC SHEET

Available:
8.00
Your Price:
56.75
Each
Item#:
MS28774-324

1.375 x 1.75 x .07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-1.375 OD-1.75 HT-0.07
SPEC SHEET

Available:
42.00
Your Price:
8.04
Each
Item#:
MS28774-325

1.5 x 1.875 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-1.5 OD-1.875 HT-0.07
SPEC SHEET

Available:
52.00
Your Price:
8.71
Each
Item#:
MS28774-326

1.625 x 2 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-1.625 OD-2 HT-0.07
SPEC SHEET

Available:
10.00
Your Price:
8.76
Each
Item#:
MS28774-327

1.75 x 2.125 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-1.75 OD-2.125 HT-0.07
SPEC SHEET

Available:
1.00
Your Price:
8.92
Each
Item#:
MS28774-328

1.875 x 2.25 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-1.875 OD-2.25 HT-0.07
SPEC SHEET

Available:
45.00
Your Price:
8.91
Each
Item#:
MS28774-329

2 x 2.375 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-2 OD-2.375 HT-0.07
SPEC SHEET

Available:
24.00
Your Price:
9.43
Each
Item#:
MS28774-330

2.125 x 2.5 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-2.125 OD-2.5 HT-0.07
SPEC SHEET

Available:
40.00
Your Price:
9.75
Each
Item#:
MS28774-331

2.25 x 2.625 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-2.25 OD-2.625 HT-0.07
SPEC SHEET

Available:
16.00
Your Price:
9.98
Each
Item#:
MS28774-332

2.375 x 2.75 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-2.375 OD-2.75 HT-0.07
SPEC SHEET

Available:
43.00
Your Price:
10.44
Each
Item#:
MS28774-333

2.5 x 2.875 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-2.5 OD-2.875 HT-0.07
SPEC SHEET

Available:
5.00
Your Price:
10.73
Each
Item#:
MS28774-334

2.625 x 3 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-2.625 OD-3 HT-0.07
SPEC SHEET

Available:
69.00
Your Price:
11.16
Each
Item#:
MS28774-335

2.75 x 3.125 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-2.75 OD-3.125 HT-0.07
SPEC SHEET

Available:
11.00
Your Price:
11.97
Each
Item#:
MS28774-336

2.875 x 3.25 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-2.875 OD-3.25 HT-0.07
SPEC SHEET

Available:
38.00
Your Price:
12.11
Each
Item#:
MS28774-337

3 x 3.375 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-3 OD-3.375 HT-0.07
SPEC SHEET

Available:
9.00
Your Price:
12.41
Each
Item#:
MS28774-338

3.125 x 3.5 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-3.125 OD-3.5 HT-0.07
SPEC SHEET

Available:
48.00
Your Price:
13.00
Each
Item#:
MS28774-339

3.25 x 3.625 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-3.25 OD-3.625 HT-0.07
SPEC SHEET

Available:
28.00
Your Price:
13.30
Each
Item#:
MS28774-340

3.375 x 3.75 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-3.375 OD-3.75 HT-0.07
SPEC SHEET

Available:
11.00
Your Price:
13.60
Each
Item#:
MS28774-341

3.5 x 3.875 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-3.5 OD-3.875 HT-0.07
SPEC SHEET

Available:
9.00
Your Price:
13.88
Each
Item#:
MS28774-342

3.625 x 4 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-3.625 OD-4 HT-0.07
SPEC SHEET

Available:
24.00
Your Price:
14.06
Each
Item#:
MS28774-343

3.75 x 4.125 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-3.75 OD-4.125 HT-0.07
SPEC SHEET

Available:
5.00
Your Price:
14.38
Each
Item#:
MS28774-344

3.875 x 4.25 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-3.875 OD-4.25 HT-0.07
SPEC SHEET

Available:
5.00
Your Price:
14.49
Each
Item#:
MS28774-345

4 x 4.375 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-4 OD-4.375 HT-0.07
SPEC SHEET

Available:
13.00
Your Price:
14.55
Each
Item#:
MS28774-346

4.125 x 4.5 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-4.125 OD-4.5 HT-0.07
SPEC SHEET

Available:
17.00
Your Price:
15.14
Each
Item#:
MS28774-347

4.25 x 4.625 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-4.25 OD-4.625 HT-0.07
SPEC SHEET

Available:
9.00
Your Price:
19.93
Each
Item#:
MS28774-348

4.375 x 4.75 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-4.375 OD-4.75 HT-0.07
SPEC SHEET

Available:
5.00
Your Price:
20.06
Each
Item#:
MS28774-349

4.5 x 4.875 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-4.5 OD-4.875 HT-0.07
SPEC SHEET

Available:
6.00
Your Price:
21.06
Each
Item#:
MS28774-355

5.25 x 5.625 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-5.25 OD-5.625 HT-0.07
SPEC SHEET

Available:
5.00
Your Price:
23.76
Each
Item#:
MS28774-360

5.875 x 6.25 x 0.07 Single Turn Scarf Cut PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS27595, MS28782/83

ID-5.875 OD-6.25 HT-0.07
SPEC SHEET

Available:
9.00
Your Price:
27.22
Each
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