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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 5331-00-166-8422 P/N AS3209-224 · 57479000-A · 224-19357 · PRP224-19357 · +92 more
  2. O-RING NSN 5331-00-166-0975 P/N 10140-18 ITEM 9 · 6640219 FIND 19 · J221P011 · 216-D-2 ITEM 21 · +91 more
  3. O-RING NSN 5331-00-833-7491 P/N AS28778-5 · 45229-52 · 7799-5 · 906-5-739-90 · +89 more
  4. O-RING NSN 5331-00-579-3158 P/N MS28775-008/2-008 · MS28775-008 · SP3103 · 7377-008 · +86 more
  5. O-RING NSN 5331-00-584-0265 P/N 501220 · 012-19457 · 012-7377 · SP3107 · +85 more
  6. O-RING NSN 5331-00-231-3261 P/N 7767719 · 6700973 · PRP902-28 · 11K3336PC25A · +85 more
  7. O-RING NSN 5331-00-020-0064 P/N GS570J3B12 · M83248-1-912 · 912-19357 · PRP3-912-19357 · +85 more
  8. O-RING NSN 5331-00-166-0969 P/N 705B504P25 · 010-17507 · DF298851 FIND 7 · L-1140-152 PIECE 31 · +84 more
  9. O-RING NSN 5331-00-165-1941 P/N 085506 · 085450 ITEM 60 · AS3209-214 · R47153 · +84 more
  10. O-RING NSN 5331-00-684-3420 P/N MS28775-013 · 3A3505 PC 23 · 101013 · 7377-013 · +81 more
  11. O-RING NSN 5331-00-641-0231 P/N 7377-216 · 216 · 216-7377 · SP3121 · +81 more
  12. O-RING NSN 5331-00-599-2934 P/N 002389 · 3212 PIECE 21 · 29991-D ITEM 31 · 7377-112 · +80 more
  13. O-RING NSN 5331-00-543-3041 P/N SP3125 · 7377-220 · 340414A044 · 571-6134008 ITEM 88 · +80 more
  14. O-RING NSN 5331-00-166-0990 P/N SAE AMS7276H · 92535 · 182629 · N-677 PIECE 28 · +80 more
  15. O-RING NSN 5331-01-046-3300 P/N M83461/1-012 · 012-7757 · 012-1587 · PRP102-7757 · +79 more
  16. O-RING NSN 5331-00-579-6495 P/N 2000176 · 0001229 · Z053-074979 · 45Z91D40 · +78 more
  17. O-RING NSN 5331-00-167-5172 P/N M83248/2-904 · 4000-04 · 9752K114 · 238290-904 · +78 more
  18. O-RING NSN 5331-00-582-2855 P/N 7377-113 · MS28775-113 · MS28775-113 · 2CD824 · +77 more
  19. O-RING NSN 5331-00-292-0580 P/N 45229-53 · 7377-006 · 006-737-70 · 1000-009PC6 · +76 more
  20. O-RING NSN 5331-00-198-6183 P/N 7351356 · 0646999 · AN6227B24 · 219-7117 · +76 more
  21. O-RING NSN 5331-00-166-0993 P/N 9920 FIND 33 · A6689.017.169 · S9413-017 · 649-393-017-0 · +75 more
  22. O-RING NSN 5331-00-020-0067 P/N 1002491 · 17107A10B · PRP3-910-19357 · 910-19357 · +75 more
  23. O-RING NSN 5331-00-579-7927 P/N MS28775-225 · M1200APC20 · M1228 · 4786P11 · +74 more
  24. O-RING NSN 5331-00-816-3546 P/N MS28778-20 · N885PC20 · N94-84920 · N88PC6 · +73 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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