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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 5331-00-221-6128 P/N 012-11737 · PRP012-11737 · MS9386-012 · AS568-012AMS7267 · +14 more
  2. O-RING NSN 5331-00-184-3472 P/N 593-6960891PC5 · 593-7067139-218 · 69494M345 · AMS7276 · +14 more
  3. O-RING NSN 5331-00-172-7187 P/N M83248/1-036 · AS3209-036 · AMS7276 · M83248/1-036 · +14 more
  4. O-RING NSN 5331-00-172-6348 P/N 7866-175 · PX1775-175 · 10V60-141-175 · PRP568-175-457-60 · +14 more
  5. O-RING NSN 5331-00-171-5850 P/N 7866-162 · GS570EM162 · 10V60-141-162 · 1425PD0301-002 · +14 more
  6. O-RING NSN 5331-00-167-5152 P/N 649-393-271-0 · NAS1593-271 · AMS7276G · AS3209-271 · +14 more
  7. O-RING NSN 5331-00-167-5149 P/N K70-0083 · DD-4651 REF NO 16 · DD-4531 REF NO 16 · BACP11P268 · +14 more
  8. O-RING NSN 5331-00-167-5140 P/N 257-17107 · M83248/1-257 · AS3209-257 · M83248/1-257 · +14 more
  9. O-RING NSN 5331-00-166-1088 P/N 65154-017-922 · 1146-A21V .25IPS IT NO 15 · AS3581-017/AMS7259 · MILR83248 · +14 more
  10. O-RING NSN 5331-00-165-1935 P/N 649-393-158-0 · AMS7276 · AS3209-158 · MILR83248 · +14 more
  11. O-RING NSN 5331-00-136-2784 P/N 7866-002 · 60-P-31-002 · PX-1775-002 · 10V60-141-002 · +14 more
  12. O-RING NSN 5331-00-103-1986 P/N AS3208-04 · AS3208-04 · NAS1595-4 · AS3208-04 · +14 more
  13. O-RING NSN 5331-00-090-4066 P/N 011-11306 · 2-011S564-6 · A-A-59588 CL 2B GR 60 · 25C85-19 · +14 more
  14. O-RING NSN 5331-01-355-5356 P/N AS43013-163 · AS43013-163 · AS43013-163 · AS43013-163 · +13 more
  15. O-RING NSN 5331-01-344-4335 P/N 803-6983468-PC136 · 190000 PC NO. 5 · 513CK-016 · AS3209-016CP · +13 more
  16. O-RING NSN 5331-01-283-0518 P/N ST1946-016 · ST1946-016 · ST1946-016 · ST1946-016 · +13 more
  17. O-RING NSN 5331-01-210-2697 P/N PRP309-7377 · 309-7377 · P48026-309 · PRP568-309-4067-70 · +13 more
  18. O-RING NSN 5331-01-194-8964 P/N AS3581-234 · ARP568-234MILG23652TYPE2 · AMS7259D · M83248/2-234 · +13 more
  19. O-RING NSN 5331-01-185-2585 P/N 2-238N756-75 · 07A568-238N · 238-7757 · PRP238-7757 · +13 more
  20. O-RING NSN 5331-01-185-1678 P/N D50-0006 ITEM 19 · D50-0006 ITEM 19 · AMS7259D · AS3581-137 · +13 more
  21. O-RING NSN 5331-01-184-5987 P/N N-788 ALT A PIECE 11 · AS3581-279 · AS568-279MIL-G-23652 TY 2 · AMS7259D · +13 more
  22. O-RING NSN 5331-01-176-7535 P/N 801-6640811 PC · 801-6640811 PC 221-4 · M83461/1-342 · AMS-P-83461/1 · +13 more
  23. O-RING NSN 5331-01-162-4705 P/N 518-5342537 ITE · M83461/1-338 · M83461/1-338 · AMS-P-83461/1 · +13 more
  24. O-RING NSN 5331-01-160-4346 P/N M83461/1-330 · 40403-7 PC. 21 · 720-01 · AMS-P-83461/1 · +13 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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