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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 5331-01-530-4135 P/N 12601622-002 · 526914 · 8KK67 · 4199999002 · +3 more
  2. O-RING NSN 5331-01-525-9426 P/N AS3208-110 CP · M83248/1-110CP · V3C10350-16CP · V3C10333-5CP · +3 more
  3. O-RING NSN 5331-01-525-0160 P/N 26KP417 · 9957 · DPW/9957 · 26KP417 · +3 more
  4. O-RING NSN 5331-01-522-6259 P/N 5KK58 · 5KK58 · 159-9322 · 159-9322 · +3 more
  5. O-RING NSN 5331-01-522-1093 P/N 7HA385 · 7HA385 · 10409954 · 215-3198 · +3 more
  6. O-RING NSN 5331-01-512-7848 P/N 13977PC34 · 13976PC18 · 13972PC17 · 13975PC19 · +3 more
  7. O-RING NSN 5331-01-512-4983 P/N 10025383 · 17KP482 · 29542975 · 2950350518 · +3 more
  8. O-RING NSN 5331-01-509-5427 P/N 608537.001 SEQ 271 · 608537.001 SEQ 272 · 001114.650.000 · 001112.650.000 · +3 more
  9. O-RING NSN 5331-01-509-5415 P/N M83461/1-249 · AMS-P-83461 · M83461/1-249 · MIL-P-83461 · +3 more
  10. O-RING NSN 5331-01-509-2400 P/N M83485/1-118 · AMS-R-83485/1 · M83485/1-118 · 850000101-R11-118 · +3 more
  11. O-RING NSN 5331-01-508-8275 P/N 7383634 · 515-7383634-F126 · AS568-212 MIL-G-22050 GR 2 · AS568-212-80 · +3 more
  12. O-RING NSN 5331-01-506-7134 P/N 12KP740 · 12KP740 · 0336042 · 033-6042 · +3 more
  13. O-RING NSN 5331-01-502-7567 P/N AMS-R-25988 · MIL-R-25988 · M25988/2-033 · MIL-DTL-25988/2 · +3 more
  14. O-RING NSN 5331-01-500-3125 P/N M83485/1-036 · AMS-R-83485/1 · M83485/1-036 · MIL-R-83485/1 · +3 more
  15. O-RING NSN 5331-01-498-1538 P/N C14661 PC.NO.4 · AS568-027AMS36608 · AS568-027AMS366 0 · AS568-027AMS3660 · +3 more
  16. O-RING NSN 5331-01-497-5949 P/N M83461/1-385 · M83461/1-385 · 2-385 N756-75 · 2-385 N0756-75 · +3 more
  17. O-RING NSN 5331-01-494-8102 P/N 00333-035 F70 · LRC63047-11 · 1966-018 · ST7M251-11 · +3 more
  18. O-RING NSN 5331-01-492-7052 P/N AMS-R-25988 · M25988/4-037 · MIL-R-25988 · L1218 2-037 · +3 more
  19. O-RING NSN 5331-01-491-1446 P/N 085533 · 17KP934 · 17KP934 · 3-910-V0894-90 · +3 more
  20. O-RING NSN 5331-01-490-6086 P/N AMS-P-83461/1 · M83461/1-348 · M83461/1-348 · GHN10089-90 · +3 more
  21. O-RING NSN 5331-01-486-1739 P/N AS568-221 · MS33666-221 · 4-2604-32A · 4-2406-32A · +3 more
  22. O-RING NSN 5331-01-486-1729 P/N AS568-227/MILP25732 · AS568-227 · MS33666-227 · 4-2604-50A · +3 more
  23. O-RING NSN 5331-01-485-6438 P/N ST1946-163 · ST1946-163 · ST1946-163 · ST1946-163 · +3 more
  24. O-RING NSN 5331-01-485-6435 P/N ST1946-111 · ST1946-111 · ST1946-111 · M83485/1-111 · +3 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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