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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 5331-01-046-3140 P/N 78-137-000 · K41RB72112 · VRP-95-783 · GRP78-137 · +2 more
  2. O-RING NSN 5331-01-045-4147 P/N 3454-01250-0187-0334 · 125032 · 125-032 · 347-32301-330C · +2 more
  3. O-RING NSN 5331-01-044-6596 P/N AS568-141MIL-P-5516CLASSB · ASM5516 CLASS B · AS568-141 · AS568-141 · +2 more
  4. O-RING NSN 5331-01-043-1418 P/N MIL-R-25988/3 · M25988/3-176 · MIL-DTL-25988/3 · 966235-176C · +2 more
  5. O-RING NSN 5331-01-042-6327 P/N 904-K · GS570J3K4 · 904-K · 904-1529 · +2 more
  6. O-RING NSN 5331-01-041-5174 P/N 400-221-35 · 5331PL1387483 · H800-04 VITON · H800-4 · +2 more
  7. O-RING NSN 5331-01-040-5886 P/N AN6227B19 · N304-7-B19 · AN6227B-19 · N0304 2-214 · +2 more
  8. O-RING NSN 5331-01-040-1014 P/N C10096-0060-0006 · AMS3303J · AS568-006 · C10096-0060-0006 · +2 more
  9. O-RING NSN 5331-01-040-0299 P/N NA151-70 · 2509111 · 2509111 · 2509111 · +2 more
  10. O-RING NSN 5331-01-039-4482 P/N 2-112N741-75 · 2-112 N741-75 · 1951398-3 · N0951-75 2-112 · +2 more
  11. O-RING NSN 5331-01-039-4481 P/N 2-006N741-75 · 4405174-0060 · 2-006 N741-75 · 1951398-1 · +2 more
  12. O-RING NSN 5331-01-039-2522 P/N ARP568-141MILR25897TY1CL1 · L180-141 · MIL-R-83248/1-1 41 · L180-141CP · +2 more
  13. O-RING NSN 5331-01-038-3984 P/N AE568-155 · ASTM D2000 · 1N141200004 · 2-155E0540-80 · +2 more
  14. O-RING NSN 5331-01-036-2817 P/N AS568-240 · 2-240N507-9 · AS568-240 · MS28778-240 · +2 more
  15. O-RING NSN 5331-01-036-0916 P/N MS28775-016 · 510-016 · MS28775-016 · MS28775-016 · +2 more
  16. O-RING NSN 5331-01-033-2710 P/N AS3208-01 · 5331PL0213703 · 10117145 · ST3002-01 · +2 more
  17. O-RING NSN 5331-01-032-7051 P/N 703-7069236-31 · 437-8357206-010 · H832-7201-31 · 11148L001 · +2 more
  18. O-RING NSN 5331-01-032-6494 P/N MS29561-443 · MS29561-443 · MS29561-443 · MS29561-443 · +2 more
  19. O-RING NSN 5331-01-032-3545 P/N MS9967-132 · MS9967-132 · MS9967-132ES · SAE-AS9967 · +2 more
  20. O-RING NSN 5331-01-032-3337 P/N B171-189 · 421 · B171-189 · E171-422KPC421 · +2 more
  21. O-RING NSN 5331-01-031-8290 P/N 2502774-7 · 2502774-7 · 2502774-7 · 2-024 E0540-801W2B · +2 more
  22. O-RING NSN 5331-01-031-8286 P/N 2502774-22 · 2502774-22 · 2502774-22 · 2502774-22 · +2 more
  23. O-RING NSN 5331-01-031-8271 P/N 2502774-29 · 2502774-29 · 2502774-29 · 2-032 E0540-80 1W2B · +2 more
  24. O-RING NSN 5331-01-031-8257 P/N 2507294-51 · 2507294-51 · 2507294-51 · 2507294-51 · +2 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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