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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 5331-00-165-1955 P/N 20237-6 · AS3209-237 · 523718 · AS3209-237 · +25 more
  2. O-RING NSN 5331-00-165-1936 P/N 17KP370 · DD-4531 REF NO 15 · DD-4651 REF NO 15 · DD-4520 REF NO 15 · +25 more
  3. O-RING NSN 5331-00-054-0168 P/N 7866-029 · 60-P-31-030 · PZ-1775-029 · 10V60-141-029 · +25 more
  4. O-RING NSN 5331-01-106-7287 P/N P48026-262 · MS28775-262 · AS28775-262 · AN6230-1340 · +24 more
  5. O-RING NSN 5331-01-019-2448 P/N MS28775-249 · PRP568-249-4067-70 · AS28775 · MS28775-249 · +24 more
  6. O-RING NSN 5331-01-005-0509 P/N 10510579 · D2025FF ITEM 21 · DS-936299 · 4680-137 · +24 more
  7. O-RING NSN 5331-00-841-2366 P/N GS570EM030 · 7866-030 · 11-030MILP5315 · PZ-1775-030 · +24 more
  8. O-RING NSN 5331-00-815-8860 P/N MS28775-145 · 4627781PC7 · 4627780PC7 · 4627782PC7 · +24 more
  9. O-RING NSN 5331-01-088-5363 P/N M83461/1-010 · M83461/1-010 · A901099-00161 · D25-047-2190 · +24 more
  10. O-RING NSN 5331-00-702-5643 P/N MS28775-128 · MS28775-128 · P48026-128 · PRP568-128-4067 70 · +24 more
  11. O-RING NSN 5331-00-595-6328 P/N 12FL0R · G285513 · 500-001-214 · 3014 · +24 more
  12. O-RING NSN 5331-00-579-7544 P/N 7377-243 · MS28775-243 · 993R0048 PC 3-1 · P48026-243 · +24 more
  13. O-RING NSN 5331-00-541-2252 P/N 7866-148 · PX-1775-148 · 10V60-141-148 · 457-60-148 · +24 more
  14. O-RING NSN 5331-00-490-4600 P/N 116-11646 · PRP116-11646 · GS570J2J116 · B63115-116 · +24 more
  15. O-RING NSN 5331-00-476-7406 P/N 7866-035 · 60-P-31-035 · 18-1027 ITEM H6 · PX-1775-035 · +24 more
  16. O-RING NSN 5331-00-472-2930 P/N 5260-908 · 95768 ITEM 3 · 2HS444 · 7755908010 · +24 more
  17. O-RING NSN 5331-00-291-3085 P/N 7866-250 · 306-11 · 8A65A55 · AF934-165 · +24 more
  18. O-RING NSN 5331-00-291-3074 P/N GS570EM267 · 7866-267 · 60-P-31-267 · H554-1RBPC133 · +24 more
  19. O-RING NSN 5331-00-265-1077 P/N GS570EM220 · 17598-1 · 300201 · 17598-1 · +24 more
  20. O-RING NSN 5331-00-251-9379 P/N 7866-345 · 7866-345 · 345-8307 · 2-345N602-70 · +24 more
  21. O-RING NSN 5331-00-250-0235 P/N MS29513-215 · 7866-215 · MS29513-215 · L4353-19 · +24 more
  22. O-RING NSN 5331-00-196-5368 P/N 7410115 · 7375695 · 011-7117 · 14393-1 · +24 more
  23. O-RING NSN 5331-00-186-2747 P/N 250S72 · 1JH1000REVCPC142 · 1JA1421PC2 · 1JC2876SUB2ITEM27 · +24 more
  24. O-RING NSN 5331-00-167-5156 P/N 845-7286708 ITEM 21 · 845-7108535 ITEM 25 · 556-7015842-15 · 3426RA PIECE 16 · +24 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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