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 and lip seals.

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Item#:
MS27595-245

4.375 x 4.613 x 0.05 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-4.375 OD-4.613 HT-0.05
SPEC SHEET

Available:
7.00
Your Price:
11.06
Each
Item#:
MS27595-246

4.5 x 4.738 x 0.05 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-4.5 OD-4.738 HT-0.05
SPEC SHEET

Available:
23.00
Your Price:
11.20
Each
Item#:
MS27595-247

4.625 x 4.863 x 0.05 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-4.625 OD-4.863 HT-0.05
SPEC SHEET

Available:
52.00
Your Price:
11.50
Each
Item#:
MS27595-248

4.75 x 4.988 x 0.05 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-4.75 OD-4.988 HT-0.05
SPEC SHEET

Available:
93.00
Your Price:
13.47
Each
Item#:
MS27595-249

4.875 x 5.113 x 0.05 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-4.875 OD-5.113 HT-0.05
SPEC SHEET

Available:
1.00
Your Price:
14.80
Each
Item#:
MS27595-250

5 x 5.238 x 0.05 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-5 OD-5.238 HT-0.05
SPEC SHEET

Available:
37.00
Your Price:
15.68
Each
Item#:
MS27595-251

5.125 x 5.363 x 0.05 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-5.125 OD-5.363 HT-0.05
SPEC SHEET

Available:
11.00
Your Price:
16.83
Each
Item#:
MS27595-252

5.25 x 5.488 x 0.05 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-5.25 OD-5.488 HT-0.05
SPEC SHEET

Available:
3.00
Your Price:
16.68
Each
Item#:
MS27595-253

5.375 x 5.613 x 0.05 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-5.375 OD-5.613 HT-0.05
SPEC SHEET

Available:
27.00
Your Price:
16.87
Each
Item#:
MS27595-254

5.5 x 5.738 x 0.05 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-5.5 OD-5.738 HT-0.05
SPEC SHEET

Available:
17.00
Your Price:
17.63
Each
Item#:
MS27595-255

5.625 x 5.863 x 0.05 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-5.625 OD-5.863 HT-0.05
SPEC SHEET

Available:
49.00
Your Price:
20.09
Each
Item#:
MS27595-256

5.75 x 5.988 x 0.05 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-5.75 OD-5.988 HT-0.05
SPEC SHEET

Available:
86.00
Your Price:
20.16
Each
Item#:
MS27595-257

5.875 x 6.113 x 0.05 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-5.875 OD-6.113 HT-0.05
SPEC SHEET

Available:
3.00
Your Price:
21.53
Each
Item#:
MS27595-258

6 x 6.238 x 0.05 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-6 OD-6.238 HT-0.05
SPEC SHEET

Available:
38.00
Your Price:
21.71
Each
Item#:
MS27595-259

6.25 x 6.488 x 0.05 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-6.25 OD-6.488 HT-0.05
SPEC SHEET

Available:
27.00
Your Price:
24.83
Each
Item#:
MS27595-260

6.5 x 6.738 x 0.05 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-6.5 OD-6.738 HT-0.05
SPEC SHEET

Available:
231.00
Your Price:
23.88
Each
Item#:
MS27595-261

6.75 x 6.988 x 0.05 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-6.75 OD-6.988 HT-0.05
SPEC SHEET

Available:
10.00
Your Price:
27.96
Each
Item#:
MS27595-262

7 x7.25 x .055  Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-7 OD-7.25 HT- .055 
SPEC SHEET

Available:
9.00
Your Price:
34.90
Each
Item#:
MS27595-263

7.25 x7.5 x .055 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-7.25 OD-7.5 HT-0.055
SPEC SHEET

Available:
20.00
Your Price:
35.78
Each
Item#:
MS27595-264

7.5 x 7.738 x 0.05 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-7.5 OD-7.738 HT-0.05
SPEC SHEET

Available:
3.00
Your Price:
36.12
Each
Item#:
MS27595-265

7.75 x 8 x .055 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-7.75 OD-8 HT-0.055
SPEC SHEET

Available:
63.00
Your Price:
36.81
Each
Item#:
MS27595-266

8 x 8.238 x 0.05 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-8 OD-8.238 HT-0.05
SPEC SHEET

Available:
11.00
Your Price:
37.54
Each
Item#:
MS27595-267

8.25 x 8.488 x 0.05 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-8.25 OD-8.488 HT-0.05
SPEC SHEET

Available:
45.00
Your Price:
38.14
Each
Item#:
MS27595-268

8.5 x8.75 x .055 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-8.5 OD-8.75 HT-0.055
SPEC SHEET

Available:
16.00
Your Price:
48.60
Each
Item#:
MS27595-269

8.75 x9 x .055 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-8.75 OD-9 HT-0.055
SPEC SHEET

Available:
30.00
Your Price:
45.49
Each
Item#:
MS27595-270

9 x 9.238 x 0.05 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-9 OD-9.238 HT-0.05
SPEC SHEET

Available:
17.00
Your Price:
63.71
Each
Item#:
MS27595-272

9.5 x 9.738 x 0.05 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-9.5 OD-9.738 HT-0.05
SPEC SHEET

Available:
12.00
Your Price:
64.48
Each
Item#:
MS27595-273

9.75 x 9.988 x 0.05 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-9.75 OD-9.988 HT-0.05
SPEC SHEET

Available:
23.00
Your Price:
70.92
Each
Item#:
MS27595-277

11.5 x 11.738 x 0.05 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-11.5 OD-11.738 HT-0.05
SPEC SHEET

Available:
1.00
Your Price:
73.02
Each
Item#:
MS27595-278

12 x 12.238 x 0.05 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-12 OD-12.238 HT-0.05
SPEC SHEET

Available:
3.00
Your Price:
73.44
Each
Item#:
MS27595-319

1.062 x 1.432 x 0.07 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-1.062 OD-1.432 HT-0.07
SPEC SHEET

Available:
4.00
Your Price:
8.99
Each
Item#:
MS27595-321

1.187 x 1.557 x 0.07 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-1.187 OD-1.557 HT-0.07
SPEC SHEET

Available:
9.00
Your Price:
9.04
Each
Item#:
MS27595-324

1.375 x 1.75 x 0.07 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-1.375 OD-1.75 HT-0.07
SPEC SHEET

Available:
70.00
Your Price:
9.05
Each
Item#:
MS27595-325

1.5 x 1.87 x 0.07 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-1.5 OD-1.87 HT-0.07
SPEC SHEET

Available:
60.00
Your Price:
8.60
Each
Item#:
MS27595-326

1.625 x 1.995 x 0.07 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-1.625 OD-1.995 HT-0.07
SPEC SHEET

Available:
50.00
Your Price:
8.77
Each
Item#:
MS27595-327

1.75 x 2.12 x 0.07 Solid PTFE Back Up Ring Inch

Hydraulic SealAlternative Seals: 8-, 19-, 51-, MS28774, MS28782, MS28783

ID-1.75 OD-2.12 HT-0.07
SPEC SHEET

Available:
98.00
Your Price:
9.78
Each
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