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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 5331-01-303-5388 P/N 698-00-25 PIECE 7 · NC820910 · 820910 · R02-19-40-0011-0053 · +1 more
  2. O-RING NSN 5331-01-301-5005 P/N 0119973948 · 0119973948 · A0119973948 · 4538741-117 · +1 more
  3. O-RING NSN 5331-01-301-5002 P/N 453 8727-001 · 453 8727-001 · 453 8727-001 · 93814-991 · +1 more
  4. O-RING NSN 5331-01-301-4992 P/N 0169973748 · 0169973748 · 0059978448 · 4538742-710 · +1 more
  5. O-RING NSN 5331-01-301-4991 P/N 1262770855 · A1262770855 · 1262770855 · 4538742-711 · +1 more
  6. O-RING NSN 5331-01-301-4990 P/N 0059978648 · A0059978648 · 0059978648 · 4538742-844 · +1 more
  7. O-RING NSN 5331-01-301-4989 P/N 0059977048 · 4538742-821 · 0059977048 · 4538742-821 · +1 more
  8. O-RING NSN 5331-01-301-4985 P/N 0489971148 · 0489971148 · 4538742-748 · 4538742-748 · +1 more
  9. O-RING NSN 5331-01-301-4983 P/N 0119971448 · 0119971448 · 4538742-743 · 4538742-743 · +1 more
  10. O-RING NSN 5331-01-300-1835 P/N C1353044-4 · 1183 · 1183 · ASC1465375 · +1 more
  11. O-RING NSN 5331-01-300-1528 P/N 9542B · 9542B · S-254-S604-70 · 2-254S604-70 · +1 more
  12. O-RING NSN 5331-01-299-8240 P/N 608537.003 SEQ 271 · 001313.650.000 · 001313.650.000 · 62555.001 ITEM 271 · +1 more
  13. O-RING NSN 5331-01-299-8238 P/N 882307 · 083758 · R978800400 · 18,72X2,62NBR90 · +1 more
  14. O-RING NSN 5331-01-299-7636 P/N AS33931-4 · 5331PL1810249 · MS3393-4 · 10370655 · +1 more
  15. O-RING NSN 5331-01-299-0062 P/N 2HA9 · 2HA9 · 2-018 N552-90 · 2-018 N552-90 · +1 more
  16. O-RING NSN 5331-01-298-7222 P/N AMS7276 · AS3209-036 · AS3209-036 · SAE-AMS7276 · +1 more
  17. O-RING NSN 5331-01-298-4849 P/N AS29513-382 · MS29513-382 · SAE-AS29513 · MS29513-382 · +1 more
  18. O-RING NSN 5331-01-296-0291 P/N A-27-19087-1 PI · A-27-19087-1 PIECE 8 · 20A11XM473 · 20A11XM473 · +1 more
  19. O-RING NSN 5331-01-295-2953 P/N 771A188-1 · 771A188-1 · 771A188-001 · 662E730 PIECE 65 · +1 more
  20. O-RING NSN 5331-01-295-2951 P/N 18065 ITEM 20 · 7963-28 · S07963-028 · 12505-19 · +1 more
  21. O-RING NSN 5331-01-294-8032 P/N 6814-001 · 229581 · 6814.001 · 6814-002 · +1 more
  22. O-RING NSN 5331-01-292-9459 P/N 20A11EM248 · 20A11EM248 · 5331PL1274779 · 20A11EM248 · +1 more
  23. O-RING NSN 5331-01-291-7879 P/N V0747 5-256 · 5-256 V747-75 · 5-256V747-75 · 5-256V747-75 · +1 more
  24. O-RING NSN 5331-01-291-6864 P/N AS568-425AMS7277 · 2-425 B318-70 · 2-425 · B0318 2-425 · +1 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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