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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 5331-01-548-4364 P/N 7550478-263370201-B · MS28775-330 · G547-0002-263370201-B · 263370201-B · +6 more
  2. O-RING NSN 5331-01-545-0130 P/N 10023546 · 19KP363 · 3KP732 · 29543926 · +6 more
  3. O-RING NSN 5331-01-518-0486 P/N AS3581-122 · M83248/2-122 · AMS 7259/AS3581-122 · AMS7259 · +6 more
  4. O-RING NSN 5331-01-517-2295 P/N 161K0000 ITEM 58 · 161K0228 PN Q5R · 161K0228-6 · Q5R · +6 more
  5. O-RING NSN 5331-01-517-2294 P/N 161K0228 PN Q4R · 161K0000 ITEM 65 · 161K0228-5 · Q4R · +6 more
  6. O-RING NSN 5331-01-517-2292 P/N 161K0000 ITEM 62 · 161K0228 PN Q3R · 161K0228-4 · Q3R · +6 more
  7. O-RING NSN 5331-01-506-6707 P/N 515-7409423-F108 · AS568-212 · ARP568-212MILG22050GR1 · MIL-DTL-22050 · +6 more
  8. O-RING NSN 5331-01-504-9370 P/N 12601622-001 · 23KP962 · 23KP962 · 4199999 · +6 more
  9. O-RING NSN 5331-01-503-3545 P/N 2515008C1 · 2HA11 · 17KP931 · 2HA11 · +6 more
  10. O-RING NSN 5331-01-501-4297 P/N ST1946-912 · ST1946-912 · ST1946-912 · ST1946-912 · +6 more
  11. O-RING NSN 5331-01-501-4293 P/N ST1946-177 · ST1946-177 · ST1946-177 · ST1946-177 · +6 more
  12. O-RING NSN 5331-01-494-4559 P/N AMS-R-25988 · M25988/4-109 · MIL-DTL-25988/4 · MIL-R-25988 · +6 more
  13. O-RING NSN 5331-01-485-6432 P/N ST1946-042 · ST1946-042 · ST1946-042 · ST1946-042 · +6 more
  14. O-RING NSN 5331-01-477-7363 P/N ST1946-910 · ST1946-910 · ST1946-910 · ST1946-910 · +6 more
  15. O-RING NSN 5331-01-472-5012 P/N NAS1611-128 · NAS1613 · NAS1601 · NAS1601-128 · +6 more
  16. O-RING NSN 5331-01-469-7607 P/N 2000154 · 061-9455 · 7HB544 · 3703936 · +6 more
  17. O-RING NSN 5331-01-455-8423 P/N AMS-P-83461/1 · M83461/1-256 · M83461/1-256 · MIL-P-83461/1 · +6 more
  18. O-RING NSN 5331-01-424-6568 P/N 032599T · 124655 · 5331PL1995239 · 10198329 · +6 more
  19. O-RING NSN 5331-01-423-3555 P/N 992 1885 · 9921885 · 81675030029 · 9921885 · +6 more
  20. O-RING NSN 5331-01-419-8407 P/N 524-6985906-F129 · 211040981 · 77358 · 175789 REV B ITEM 16 · +6 more
  21. O-RING NSN 5331-01-417-1037 P/N 12321155 · OR-237-U-1016 · 12321155 · OR-237-U-1016 · +6 more
  22. O-RING NSN 5331-01-414-1344 P/N MS9385-09 · 5331PL1936557 · MS9385-09 · MS9385-09 · +6 more
  23. O-RING NSN 5331-01-412-4827 P/N AMC-R-83485 · AMS-R-83485 · M83485/1-122 · MIL-R-83485 · +6 more
  24. O-RING NSN 5331-01-412-3842 P/N M83485/1-129 · AMC-R-83485 · M83485/1-129 · MIL-R-83485 · +6 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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