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Home/Military Standard parts/Seals & Fittings/FSC 5331
Category // FSC 5331 · 53,078 items

O-Ring

Round-section sealing rings used in grooves to seal fluid and gas connections; every item filed here is an O-ring.

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53,078 items

  1. O-RING NSN 5331-00-297-5339 P/N 7866-430 · PX1775-430 · RT253-65-430 · PRP568-430-60 · +15 more
  2. O-RING NSN 5331-00-297-5337 P/N 7866-427 · 60-P-31-427 · PX1775-427 · 10V60-141-427 · +15 more
  3. O-RING NSN 5331-00-291-3084 P/N 7866-349 · 60-P-31-349 · PX1775-349 · 10V60-141-349 · +15 more
  4. O-RING NSN 5331-00-291-3078 P/N GS570EM · C-69-237 · MS29513-237 · MS295113-237 · +15 more
  5. O-RING NSN 5331-00-291-3062 P/N 7866-426 · 60-P-31 · PX1775-426 · 10V60-141-426 · +15 more
  6. O-RING NSN 5331-00-288-2035 P/N PRP224-11647 · 909-2-11647 · 224-11647 · AS568-224AMS7266 · +15 more
  7. O-RING NSN 5331-00-263-8016 P/N 7866-348 · 60-P-31-348 · PX1775-348 · 10V60-141-348 · +15 more
  8. O-RING NSN 5331-00-252-6044 P/N 7866-441 · 60-P-31-441 · PX1775-441 · 10V60-141-441 · +15 more
  9. O-RING NSN 5331-00-251-9371 P/N 7866-339 · 10V60-141-339 · 457-60-339 · RT253-65-339 · +15 more
  10. O-RING NSN 5331-00-248-3844 P/N 7866-113 · 8A9022 · AS29513-113 · MS29513-113 · +15 more
  11. O-RING NSN 5331-00-240-3392 P/N P50015-005 · S9413-005 · AMS7276 · M83248/1-005 · +15 more
  12. O-RING NSN 5331-00-231-1345 P/N 8721REV G PC47 · 6689 · 9649REVBPC42-0.5IN · 20202PC22 · +15 more
  13. O-RING NSN 5331-00-215-0319 P/N 7866-279 · 60-P-31-279 · 901165 · PX1775-279 · +15 more
  14. O-RING NSN 5331-00-166-1089 P/N 901011PL FIND NO. 23 · 901010-1-6-01PL FD NO 23 · D25-046-2191 · D35C2500004 ITEM 53 · +15 more
  15. O-RING NSN 5331-00-165-1974 P/N 909-19357 · PRP3-909-19357 · NAS1595-9 · AS568-909 · +15 more
  16. O-RING NSN 5331-00-127-7459 P/N AS568-017 2AA815A13F17EA14 · 5331PL1338758 · 810-4384536-12B 30 · A6689.017.222 · +15 more
  17. O-RING NSN 5331-00-099-7533 P/N 139-11646 · PRP139-11646 · PRP568-139-1133-60 · B63115-139 · +15 more
  18. O-RING NSN 5331-00-086-2459 P/N 906-9259 · 649-602-900-0 · 798A15 · B14056-906 · +15 more
  19. O-RING NSN 5331-00-068-4382 P/N PRP-1867 · 012-1867 · AS568-012 2BG720B14B34EF11EF21 · AS3551-012 · +15 more
  20. O-RING NSN 5331-00-046-4601 P/N 76643-70X4REVFP · 7377-462 · P48026-462 · 4067-70-462 · +15 more
  21. O-RING NSN 5331-00-006-2349 P/N 7866-362 · 60-P-31-362 · PX1775-362 · 10V60-141-362 · +15 more
  22. O-RING NSN 5331-01-326-9278 P/N 250S79 · M83461/1-452 · AMS-P-83461/1 · MIL-P-83461/1 · +14 more
  23. O-RING NSN 5331-01-213-5213 P/N S000145 · 10003920 · 118475A · RD-5-4017-013 · +14 more
  24. O-RING NSN 5331-01-197-0895 P/N 556-5749829-011 · M83485/1-116 · ST1946-116 · M83485/1-116 · +14 more

Ranked by how many manufacturer cross-references are on file. Every item is quote-only — the federal record carries no price and no stock, and Atlas publishes neither. Browsing stops at page 500 of this class — past that, search by number. Send a whole list →

Questions about O-Ring

What does federal supply class 5331 cover?

Federal supply class 5331 covers O-rings, the round-section sealing rings used in grooves to seal fluid and gas connections. Every item filed here is an O-ring.

How is a part in federal supply class 5331 identified?

Because every item in the class has the same item name, the NSN is what tells one O-ring from another. Each NSN record carries the characteristics on file for that exact ring and the part numbers cross-referenced to it, so a buyer can work from an MS or AS number, a manufacturer number, or a drawing callout. Each item in the class has its own National Stock Number (NSN) record, listed above.

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