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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 5331-01-270-6189 P/N ACT180-123 · ACT180-123CP · V3D10076 REV F ITEM 13CP · V3D10076 · +4 more
  2. O-RING NSN 5331-01-264-3620 P/N 01-435-0078-5 PIECE 96 · AS568A-116/AMS3212 · N141000710 · C11240-70 · +4 more
  3. O-RING NSN 5331-01-255-3375 P/N 9316-9 · E-4336PC3C · MS28775-231 · MS28775-231 · +4 more
  4. O-RING NSN 5331-01-253-6453 P/N X1514T252C · X1514T252C · X1514T252C · 95018206 · +4 more
  5. O-RING NSN 5331-01-253-0850 P/N AS3208-08CP · AS3208-08 · MIL-R-83248 · M83248/1-908 · +4 more
  6. O-RING NSN 5331-01-247-9390 P/N A6689.020.303 C P · 20357 FIND 2.2 · A6689.020.303 · 06689020303CP · +4 more
  7. O-RING NSN 5331-01-247-6866 P/N MIL-P-25732 · MS28775-390 · AS28775 · MS28775-390 · +4 more
  8. O-RING NSN 5331-01-243-3778 P/N PA0024583 · 24583 · 2-314 BUNA-N · 2-314N674-70 · +4 more
  9. O-RING NSN 5331-01-240-7423 P/N MS28775-318 · MIL-P-25732 · AS28775 · MS28775-318 · +4 more
  10. O-RING NSN 5331-01-240-1303 P/N 11-131 · 2529-131-301 · BACP11L112 · ARP-568-131 · +4 more
  11. O-RING NSN 5331-01-239-7911 P/N ST266Z5B · ST266Z5B · 50F-B2.00INPIEC · 4IN051PC13 · +4 more
  12. O-RING NSN 5331-01-238-5866 P/N 020452V0709 · 452-19359 · AS3581-452 · M83248/2-452 · +4 more
  13. O-RING NSN 5331-01-236-6206 P/N AS28775-026 · AN6227B26 · 5330PL1750072 · 5330PL1036693 · +4 more
  14. O-RING NSN 5331-01-219-8073 P/N B2099690G3 · 2099690G3 · T 9641 · 2-021 · +4 more
  15. O-RING NSN 5331-01-219-7930 P/N 215-4498754PC7 · MS28778-12 · MS28778-12 · 9622386 · +4 more
  16. O-RING NSN 5331-01-219-4179 P/N S8990-617 · S8990-617 · S8990-617 · S8990-617 · +4 more
  17. O-RING NSN 5331-01-217-9096 P/N AMS7259 · AS3581-346 · MIL-R-83248/2 · M83248/2-346 · +4 more
  18. O-RING NSN 5331-01-215-7329 P/N AMS7259 · AS3581-148 · M83248/2-148 · MIL-R-83248/2 · +4 more
  19. O-RING NSN 5331-01-215-0116 P/N 26799N ITEM 22 · E3650 2.00IN PC NO 28 · 6389994 · N6389994 · +4 more
  20. O-RING NSN 5331-01-211-0712 P/N A6689.904.303 · 20221 FIND 30 · A6689-904-303 · A6689.904.303 · +4 more
  21. O-RING NSN 5331-01-206-6122 P/N 9458-43F116 · 568-217 · AS568-217 · ASTM D2000 2A815A13F17EA14 · +4 more
  22. O-RING NSN 5331-01-205-5040 P/N 690393-2 REV E ITEM 18 · AMS7259D · AS3581-109 · M83248/2-109 · +4 more
  23. O-RING NSN 5331-01-204-8587 P/N GV39-619-6-70 · GV39-619-6-70 · AV198-949PC21 · 39-619-70 · +4 more
  24. O-RING NSN 5331-01-204-4223 P/N AS28775 · MS28775-009 · 5331PL0809251 · MS28775-009 · +4 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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