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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 5331-00-166-0991 P/N 20015-9 · 015-17107A · 914-3-17107A-70 · 015-19357 · +61 more
  2. O-RING NSN 5331-00-108-5691 P/N MS28778-10 · 7419681 · 7799-10 · 014-7399 · +61 more
  3. O-RING NSN 5331-00-585-6663 P/N 7377-PC110 · SP3108 · 110-7377 · 7377-110 · +60 more
  4. O-RING NSN 5331-00-579-8156 P/N MS28775-212/2-212 · 7377-212 · 8522808 · 9180338 · +60 more
  5. O-RING NSN 5331-00-542-1420 P/N AS29561-010 · 890394-5 · 890121-5 · 902-5-142-70 · +60 more
  6. O-RING NSN 5331-00-584-1038 P/N MS28775-213 · 213-7377 · 7377-213 · MS28775-213 · +59 more
  7. O-RING NSN 5331-00-576-9732 P/N 523413 · 5-023-0413 · D-34162 · D1-061-0945 ITEM 23 · +59 more
  8. O-RING NSN 5331-00-187-3612 P/N 300S48 · 571-6700-1302218REVAPC28 · 564-6700-936243ALT1PCR3 · 576-6700-1505500REVAPC28 · +59 more
  9. O-RING NSN 5331-00-167-5166 P/N AS3209-905 · AS3208-05 · 20905-12 · 905-16207 · +59 more
  10. O-RING NSN 5331-00-580-5056 P/N 7377-028 · 876435-00 · MS28775-028 · WE-00588-40U ITEM 17 · +58 more
  11. O-RING NSN 5331-00-235-1676 P/N B038143 · 2302004 · S7-68 · AN62-27-68 · +58 more
  12. O-RING NSN 5331-00-166-0994 P/N AS3209-018 · 20018-9 · 018-17107 · 10511281 · +58 more
  13. O-RING NSN 5331-00-807-8993 P/N 7377-228 · PRP228-7377 · 228-7377 · 57664 · +57 more
  14. O-RING NSN 5331-00-584-0263 P/N R71732 · 40-4G125 · 1000-009PC218 · J-8534768-A PIE · +57 more
  15. O-RING NSN 5331-00-542-1365 P/N 009-7377 · 025-00204 · SP3105 · 7377-009 · +57 more
  16. O-RING NSN 5331-00-250-0230 P/N 7866-22 · MS29513-22 · 7866-022 · GS570EM022 · +57 more
  17. O-RING NSN 5331-00-166-1060 P/N 112-19357 · 39811274 · 11-112-8251-70 · 649-393-112-0 · +57 more
  18. O-RING NSN 5331-00-166-1059 P/N N-649 ITEM 67 · LL704PC11 · D2500FF ITEM 8 · 2-111 VITON · +57 more
  19. O-RING NSN 5331-00-166-0963 P/N 006-17107 · R1309P006 · R1309-006 · 2961N P/N 5262593 · +57 more
  20. O-RING NSN 5331-00-641-3763 P/N MS28775-221 · AS28775-221 · 902-26 · 1000-011PC26 · +56 more
  21. O-RING NSN 5331-00-250-0227 P/N 866-021 · 7866-21 · 7866-021 · 60-P-31-021 · +56 more
  22. O-RING NSN 5331-00-248-3846 P/N MS29513-114 · GS570EM114 · 7866-114 · R1307P114 · +56 more
  23. O-RING NSN 5331-00-167-5173 P/N 690393-2 REV E ITEM 26 · 3J13908 · D42060 PIECE 31 · 5-131-05-045-00 · +56 more
  24. O-RING NSN 5331-00-166-1025 P/N ST1000-026 · 903231C1 · LL-1554 REV B ITEM 9.4 · 34665-26 · +56 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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