MS28775 at a glance
Where to buy
Specification
| Item | Value |
|---|---|
| Type | O-ring, preformed packing |
| Compound specification | MIL-P-25732 |
| Temperature range | -65 to 275 °F |
| Status | Check the current issue of the standard before design use. |
Part numbers
Part numbers and dimensions as tabulated. The standard governs and may list others.
.07026 part numbers
| Part no. | Inside dia., in | Thickness, in |
|---|---|---|
| MS28775-004 | .070 | .070 |
| MS28775-005 | .102 | .070 |
| MS28775-006 | .113 | .070 |
| MS28775-007 | .145 | .070 |
| MS28775-008 | .176 | .070 |
| MS28775-009 | .208 | .070 |
| MS28775-010 | .239 | .070 |
| MS28775-011 | .301 | .070 |
| MS28775-012 | .364 | .070 |
| MS28775-013 | .426 | .070 |
| MS28775-014 | .489 | .070 |
| MS28775-015 | .551 | .070 |
| MS28775-016 | .614 | .070 |
| MS28775-017 | .676 | .070 |
| MS28775-018 | .739 | .070 |
| MS28775-019 | .801 | .070 |
| MS28775-020 | .864 | .070 |
| MS28775-021 | .932 | .070 |
| MS28775-022 | .989 | .070 |
| MS28775-023 | 1.051 | .070 |
| MS28775-024 | 1.114 | .070 |
| MS28775-025 | 1.176 | .070 |
| MS28775-026 | 1.239 | .070 |
| MS28775-027 | 1.301 | .070 |
| MS28775-028 | 1.364 | .070 |
| MS28775-029 | 1.489 | .070 |
.10339 part numbers
| Part no. | Inside dia., in | Thickness, in |
|---|---|---|
| MS28775-110 | .362 | .103 |
| MS28775-111 | .424 | .103 |
| MS28775-112 | .487 | .103 |
| MS28775-113 | .549 | .103 |
| MS28775-114 | .612 | .103 |
| MS28775-115 | .674 | .103 |
| MS28775-116 | .737 | .103 |
| MS28775-117 | .799 | .103 |
| MS28775-118 | .862 | .103 |
| MS28775-119 | .924 | .103 |
| MS28775-120 | .987 | .103 |
| MS28775-121 | 1.049 | .103 |
| MS28775-122 | 1.112 | .103 |
| MS28775-123 | 1.174 | .103 |
| MS28775-124 | 1.237 | .103 |
| MS28775-125 | 1.299 | .103 |
| MS28775-126 | 1.362 | .103 |
| MS28775-127 | 1.424 | .103 |
| MS28775-128 | 1.487 | .103 |
| MS28775-129 | 1.549 | .103 |
| MS28775-130 | — | .103 |
| MS28775-131 | 1.674 | .103 |
| MS28775-132 | 1.737 | .103 |
| MS28775-133 | 1.799 | .103 |
| MS28775-134 | 1.862 | .103 |
| MS28775-135 | 1.925 | .103 |
| MS28775-136 | 1.987 | .103 |
| MS28775-137 | 2.050 | .103 |
| MS28775-138 | 2.112 | .103 |
| MS28775-140 | 2.175 | .103 |
| MS28775-141 | 2.300 | .103 |
| MS28775-142 | 2.362 | .103 |
| MS28775-143 | 2.425 | .103 |
| MS28775-144 | 2.487 | .103 |
| MS28775-145 | 2.550 | .103 |
| MS28775-146 | 2.612 | .103 |
| MS28775-147 | 2.675 | .103 |
| MS28775-148 | 2.737 | .103 |
| MS28775-155 | 3.987 | .103 |
.13944 part numbers
| Part no. | Inside dia., in | Thickness, in |
|---|---|---|
| MS28775-202 | .234 | .139 |
| MS28775-210 | .734 | .139 |
| MS28775-211 | .796 | .139 |
| MS28775-212 | .859 | .139 |
| MS28775-213 | .921 | .139 |
| MS28775-214 | .984 | .139 |
| MS28775-215 | 1.046 | .139 |
| MS28775-216 | 1.109 | .139 |
| MS28775-217 | 1.171 | .139 |
| MS28775-218 | 1.234 | .139 |
| MS28775-219 | 1.296 | .139 |
| MS28775-220 | 1.359 | .139 |
| MS28775-221 | 1.421 | .139 |
| MS28775-222 | 1.484 | .139 |
| MS28775-223 | 1.609 | .139 |
| MS28775-224 | 1.726 | .139 |
| MS28775-225 | 1.850 | .139 |
| MS28775-226 | 1.980 | .139 |
| MS28775-227 | 2.110 | .139 |
| MS28775-228 | 2.334 | .139 |
| MS28775-229 | 2.359 | .139 |
| MS28775-230 | 2.484 | .139 |
| MS28775-231 | 2.609 | .139 |
| MS28775-232 | 2.734 | .139 |
| MS28775-233 | 2.859 | .139 |
| MS28775-234 | 2.984 | .139 |
| MS28775-235 | 3.109 | .139 |
| MS28775-236 | 3.234 | .139 |
| MS28775-237 | 3.359 | .139 |
| MS28775-238 | 3.484 | .139 |
| MS28775-239 | 3.609 | .139 |
| MS28775-240 | 3.734 | .139 |
| MS28775-241 | 3.859 | .139 |
| MS28775-242 | 3.984 | .139 |
| MS28775-243 | 4.109 | .139 |
| MS28775-244 | 4.234 | .139 |
| MS28775-247 | 4.609 | .139 |
| MS28775-258 | 5.984 | .139 |
| MS28775-260 | 6.507 | .139 |
| MS28775-261 | 6.711 | .139 |
| MS28775-266 | 7.984 | .139 |
| MS28775-267 | 8.204 | .139 |
| MS28775-269 | 8.734 | .139 |
| MS28775-275 | 10.48 | .139 |
.21018 part numbers
| Part no. | Inside dia., in | Thickness, in |
|---|---|---|
| MS28775-325 | 1.425 | .210 |
| MS28775-326 | 1.600 | .210 |
| MS28775-327 | 1.725 | .210 |
| MS28775-328 | 1.850 | .210 |
| MS28775-329 | 1.975 | .210 |
| MS28775-330 | 2.100 | .210 |
| MS28775-331 | 2.225 | .210 |
| MS28775-332 | 2.350 | .210 |
| MS28775-333 | 2.475 | .210 |
| MS28775-334 | 2.600 | .210 |
| MS28775-335 | 2.725 | .210 |
| MS28775-336 | 2.855 | .210 |
| MS28775-337 | 2.975 | .210 |
| MS28775-338 | 3.100 | .210 |
| MS28775-339 | 3.225 | .210 |
| MS28775-340 | 3.350 | .210 |
| MS28775-341 | 3.475 | .210 |
| MS28775-343 | 3.725 | .210 |
Part number
What each code means
| Part | Meaning |
|---|---|
| Format | MS28775-<dash> |
| Example | MS28775-004 — dash 004: thickness .070 in |
Notes from the standard
- Inside diameter blank for dash 130: the printed value repeats that of the previous dash number, so it is not used.
- Dimensions are as tabulated; thickness is the cross-section. Tolerance in the listing: thickness and inside diameter ±.003 to ±.005; larger O-rings ±.01 on inside diameter.
Where to buy
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Sources
- MS28775 — Packing, Preformed, O-Ring, Hydraulic — nominal sizes and part numbers.
Educational reference only. not approved data. Always consult the applicable SRM, AMM, or AC 43.13-1B and your certifying authority.