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#:
MS27595-026

1.25 x 1.36 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-1.25 OD-1.36 HT-0.05
SPEC SHEET

Available:
222.00
Your Price:
2.70
Each
Item#:
MS27595-027

1.312 x 1.422 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-1.312 OD-1.422 HT-0.05
SPEC SHEET

Available:
38.00
Your Price:
2.83
Each
Item#:
MS27595-028

1.375 x 1.485 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-1.375 OD-1.485 HT-0.05
SPEC SHEET

Available:
42.00
Your Price:
2.92
Each
Item#:
MS27595-029

1.5 x 1.61 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-1.5 OD-1.61 HT-0.05
SPEC SHEET

Available:
50.00
Your Price:
3.02
Each
Item#:
MS27595-032

1.875 x 1.985 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-1.875 OD-1.985 HT-0.05
SPEC SHEET

Available:
35.00
Your Price:
3.06
Each
Item#:
MS27595-035

2.25 x 2.36 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-2.25 OD-2.36 HT-0.05
SPEC SHEET

Available:
3.00
Your Price:
7.05
Each
Item#:
MS27595-036

2.375 x 2.485 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-2.375 OD-2.485 HT-0.05
SPEC SHEET

Available:
13.00
Your Price:
9.72
Each
Item#:
MS27595-038

2.625 x 2.735 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-2.625 OD-2.735 HT-0.05
SPEC SHEET

Available:
54.00
Your Price:
9.72
Each
Item#:
MS27595-040

2.875 x 2.985 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-2.875 OD-2.985 HT-0.05
SPEC SHEET

Available:
36.00
Your Price:
12.10
Each
Item#:
MS27595-041

3 x 3.11 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-3 OD-3.11 HT-0.05
SPEC SHEET

Available:
11.00
Your Price:
12.11
Each
Item#:
MS27595-044

3.75 x 3.86 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-3.75 OD-3.86 HT-0.05
SPEC SHEET

Available:
2.00
Your Price:
13.36
Each
Item#:
MS27595-049

5 x 5.11 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-5 OD-5.11 HT-0.05
SPEC SHEET

Available:
4.00
Your Price:
13.36
Each
Item#:
MS27595-106

0.187 x 0.198 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-0.187 OD-0.198 HT-0.05
SPEC SHEET

Available:
84.00
Your Price:
1.29
Each
Item#:
MS27595-108

0.25 x 0.36 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-0.25 OD-0.36 HT-0.05
SPEC SHEET

Available:
66.00
Your Price:
1.30
Each
Item#:
MS27595-109

0.312 x 0.488 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-0.312 OD-0.422 HT-0.05
SPEC SHEET

Available:
42.00
Your Price:
1.39
Each
Item#:
MS27595-110

0.375 x 0.551 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-0.375 OD-0.551 HT-0.05
SPEC SHEET

Available:
105.00
Your Price:
1.43
Each
Item#:
MS27595-111

0.437 x 0.613 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-0.437 OD-0.613 HT-0.05
SPEC SHEET

Available:
125.00
Your Price:
0.40
Each
Item#:
MS27595-112

0.5 x 0.676 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-0.5 OD-0.676 HT-0.05
SPEC SHEET

Available:
213.00
Your Price:
1.63
Each
Item#:
MS27595-113

0.562 x 0.738 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-0.562 OD-0.738 HT-0.05
SPEC SHEET

Available:
290.00
Your Price:
1.66
Each
Item#:
MS27595-114

0.625 x 0.801 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-0.625 OD-0.801 HT-0.05
SPEC SHEET

Available:
173.00
Your Price:
1.75
Each
Item#:
MS27595-115

0.687 x 0.863 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-0.687 OD-0.863 HT-0.05
SPEC SHEET

Available:
5.00
Your Price:
1.82
Each
Item#:
MS27595-116

0.75 x 0.926 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-0.75 OD-0.926 HT-0.05
SPEC SHEET

Available:
324.00
Your Price:
1.90
Each
Item#:
MS27595-117

0.812 x 0.988 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-0.812 OD-0.988 HT-0.05
SPEC SHEET

Available:
535.00
Your Price:
1.98
Each
Item#:
MS27595-118

0.875 x 1.051 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-0.875 OD-1.051 HT-0.05
SPEC SHEET

Available:
90.00
Your Price:
2.05
Each
Item#:
MS27595-119

0.937 x 1.113 x 0.05 Solid PTFE Back Up Ring Inch

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

ID-0.937 OD-1.113 HT-0.05
SPEC SHEET

Available:
86.00
Your Price:
2.09
Each
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:
93.00
Your Price:
2.21
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:
68.00
Your Price:
2.34
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:
2.49
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:
88.00
Your Price:
2.72
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:
51.00
Your Price:
2.76
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:
0.00
ETA:
05/01/2026
Your Price:
3.00
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:
166.00
Your Price:
3.17
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:
87.00
Your Price:
3.20
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:
58.00
Your Price:
3.41
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:
10.00
Your Price:
3.61
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:
38.00
Your Price:
3.82
Each
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