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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 5331-00-291-7335 P/N MS29513-329 · 7866-329 · 60-P-31-329 · NB398329-72 · +28 more
  2. O-RING NSN 5331-00-265-1090 P/N 7866-217 · 29690-6 · GS570EM217 · 29690-6 · +28 more
  3. O-RING NSN 5331-00-251-9370 P/N AS29513-338 · 7866-338 · GS570EM338 · 60-P-31-338 · +28 more
  4. O-RING NSN 5331-00-250-0225 P/N GS570EM118 · 7866-118 · 60-P-31-118 · PX-1775-118 · +28 more
  5. O-RING NSN 5331-00-167-5176 P/N 4000-16 · N94-84916 · 405863 · 52122 FIND 72 · +28 more
  6. O-RING NSN 5331-00-167-5137 P/N AS3209-151 · DD-4833 REF NO 16 · DD-4698 REF NO. 16 · DD-4690 REF NO. 16 · +28 more
  7. O-RING NSN 5331-01-114-9226 P/N 7377-258 · 083832 · MS28775-258 · 2GL624 · +27 more
  8. O-RING NSN 5331-01-101-8012 P/N 154-7117 · 154-737-70 · 154-7377 · PRP154-7377 · +27 more
  9. O-RING NSN 5331-01-097-8242 P/N M83461/1-231 · 13168CPC91 · 5D3-03848 ITEM · A50SH1PC7 · +27 more
  10. O-RING NSN 5331-00-929-8171 P/N 105X8L · 3913378 · 7HB865 · 182MHR1 · +27 more
  11. O-RING NSN 5331-00-813-2806 P/N 7377-127 · 127-7509 · PRP127-7509 · MS28775-127 · +27 more
  12. O-RING NSN 5331-00-720-2859 P/N 7377-135 · 135-7377 · MS28775-135 · 199990 · +27 more
  13. O-RING NSN 5331-00-641-8942 P/N 909-50175 · 7866-272 · 60-P-31-446 · 60-P-31-272 · +27 more
  14. O-RING NSN 5331-00-640-9476 P/N 546804 · SP3134 · 902-34 · 263CX34 · +27 more
  15. O-RING NSN 5331-00-618-5902 P/N 7377-122 · MS28775-122 · AD-4098-8Y8 PIECE 11 · P48026-122 · +27 more
  16. O-RING NSN 5331-00-599-9609 P/N 418010WALT6PCN3 · 533181PCJ3 · 316-4900-233438ALT4PCY3 · 533160PCY3 · +27 more
  17. O-RING NSN 5331-00-584-1036 P/N 20A11CM456 · W246627PC456A · 250S83 · 118205 · +27 more
  18. O-RING NSN 5331-00-579-7914 P/N MS28775-217 · MS28775-217 · 215-4639690 ITEM NO. F35 · MS28775-217 · +27 more
  19. O-RING NSN 5331-00-576-9925 P/N 906-1487 · PRP906-6 142-70 · PRP1847-906 · 5R18-6 · +27 more
  20. O-RING NSN 5331-00-551-3963 P/N 7866-253 · GS570EM253 · 60-P-31-253 · 513BG253 · +27 more
  21. O-RING NSN 5331-00-531-2068 P/N 3-8 · 3-8612-45 · S8316H8 · S8316H8 · +27 more
  22. O-RING NSN 5331-00-291-3082 P/N GS570EM333 · 7866-333 · 60-P-31-333 · PX1775-333 · +27 more
  23. O-RING NSN 5331-00-248-3834 P/N R1307P009 · 7866-009 · 60-P-31-009 · C746019-24 · +27 more
  24. O-RING NSN 5331-00-167-5146 P/N 001184.851.000 · 10000937 · 607948.001 SEQ 274 · 264-1935-70 · +27 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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