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#:
MS27595-120

1 x 1.176 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-1 OD-1.176 HT-0.05
SPEC SHEET

Available:
97.00
Your Price:
2.15
Each
Item#:
MS27595-121

1.062 x 1.238 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-1.062 OD-1.238 HT-0.05
SPEC SHEET

Available:
88.00
Your Price:
2.27
Each
Item#:
MS27595-122

1.125 x 1.301 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-1.125 OD-1.301 HT-0.05
SPEC SHEET

Available:
78.00
Your Price:
2.42
Each
Item#:
MS27595-123

1.187 x 1.363 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-1.187 OD-1.363 HT-0.05
SPEC SHEET

Available:
114.00
Your Price:
2.64
Each
Item#:
MS27595-124

1.25 x 1.426 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-1.25 OD-1.426 HT-0.05
SPEC SHEET

Available:
40.00
Your Price:
2.68
Each
Item#:
MS27595-125

1.312 x 1.488 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-1.312 OD-1.488 HT-0.05
SPEC SHEET

Available:
9.00
Your Price:
2.91
Each
Item#:
MS27595-126

1.375 x 1.551 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-1.375 OD-1.551 HT-0.05
SPEC SHEET

Available:
131.00
Your Price:
3.07
Each
Item#:
MS27595-127

1.437 x 1.613 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-1.437 OD-1.613 HT-0.05
SPEC SHEET

Available:
152.00
Your Price:
3.11
Each
Item#:
MS27595-128

1.5 x 1.676 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-1.5 OD-1.676 HT-0.05
SPEC SHEET

Available:
62.00
Your Price:
3.30
Each
Item#:
MS27595-129

1.562 x 1.738 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-1.562 OD-1.738 HT-0.05
SPEC SHEET

Available:
29.00
Your Price:
3.51
Each
Item#:
MS27595-130

1.625 x 1.801 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-1.625 OD-1.801 HT-0.05
SPEC SHEET

Available:
35.00
Your Price:
3.70
Each
Item#:
MS27595-131

1.687 x 1.863 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-1.687 OD-1.863 HT-0.05
SPEC SHEET

Available:
41.00
Your Price:
2.62
Each
Item#:
MS27595-132

1.75 x 1.926 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-1.75 OD-1.926 HT-0.05
SPEC SHEET

Available:
79.00
Your Price:
3.74
Each
Item#:
MS27595-133

1.812 x 1.988 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-1.812 OD-1.988 HT-0.05
SPEC SHEET

Available:
94.00
Your Price:
2.01
Each
Item#:
MS27595-134

1.875 x 2.051 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-1.875 OD-2.051 HT-0.05
SPEC SHEET

Available:
5.00
Your Price:
4.42
Each
Item#:
MS27595-135

1.942 x 2.118 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-1.942 OD-2.118 HT-0.05
SPEC SHEET

Available:
99.00
Your Price:
4.50
Each
Item#:
MS27595-136

2 x 2.176 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-2 OD-2.176 HT-0.05
SPEC SHEET

Available:
88.00
Your Price:
4.59
Each
Item#:
MS27595-137

2.062 x 2.238 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-2.062 OD-2.238 HT-0.05
SPEC SHEET

Available:
56.00
Your Price:
4.73
Each
Item#:
MS27595-138

2.125 x 2.301 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-2.125 OD-2.301 HT-0.05
SPEC SHEET

Available:
80.00
Your Price:
4.84
Each
Item#:
MS27595-139

2.187 x 2.363 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-2.187 OD-2.363 HT-0.05
SPEC SHEET

Available:
48.00
Your Price:
7.10
Each
Item#:
MS27595-140

2.25 x 2.426 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-2.25 OD-2.426 HT-0.05
SPEC SHEET

Available:
33.00
Your Price:
7.40
Each
Item#:
MS27595-141

2.312 x 2.488 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-2.312 OD-2.488 HT-0.05
SPEC SHEET

Available:
24.00
Your Price:
7.70
Each
Item#:
MS27595-142

2.375 x 2.551 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-2.375 OD-2.551 HT-0.05
SPEC SHEET

Available:
1304.00
Your Price:
7.80
Each
Item#:
MS27595-143

2.437 x 2.613 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-2.437 OD-2.613 HT-0.05
SPEC SHEET

Available:
21.00
Your Price:
8.01
Each
Item#:
MS27595-144

2.5 x 2.676 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-2.5 OD-2.676 HT-0.05
SPEC SHEET

Available:
14.00
Your Price:
8.21
Each
Item#:
MS27595-145

2.562 x 2.738 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-2.562 OD-2.738 HT-0.05
SPEC SHEET

Available:
5.00
Your Price:
8.75
Each
Item#:
MS27595-146

2.629 x 2.805 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-2.629 OD-2.805 HT-0.05
SPEC SHEET

Available:
8.00
Your Price:
8.85
Each
Item#:
MS27595-147

2.87 x 3.046 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-2.87 OD-3.046 HT-0.05
SPEC SHEET

Available:
10.00
Your Price:
9.68
Each
Item#:
MS27595-148

2.75 x 2.926 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-2.75 OD-2.926 HT-0.05
SPEC SHEET

Available:
105.00
Your Price:
9.68
Each
Item#:
MS27595-149

2.817 x 2.993 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-2.817 OD-2.993 HT-0.05
SPEC SHEET

Available:
10.00
Your Price:
9.87
Each
Item#:
MS27595-150

2.875 x 3.051 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-2.875 OD-3.051 HT-0.05
SPEC SHEET

Available:
55.00
Your Price:
11.31
Each
Item#:
MS27595-151

3 x 3.176 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-3 OD-3.176 HT-0.05
SPEC SHEET

Available:
34.00
Your Price:
11.70
Each
Item#:
MS27595-152

3.25 x 3.426 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-3.25 OD-3.426 HT-0.05
SPEC SHEET

Available:
83.00
Your Price:
11.31
Each
Item#:
MS27595-154

3.75 x 3.926 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-3.75 OD-3.926 HT-0.05
SPEC SHEET

Available:
19.00
Your Price:
12.96
Each
Item#:
MS27595-156

4.25 x 4.437 x .05 Solid PTFE Back Up Ring Inch

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

ID-4.25 OD-4.437 HT-0.05
SPEC SHEET

Available:
48.00
Your Price:
16.65
Each
Item#:
MS27595-157

4.5 x 4.676 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-4.5 OD-4.676 HT-0.05
SPEC SHEET

Available:
23.00
Your Price:
18.03
Each
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