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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 5331-01-651-9836 P/N 308372 · 308372 · 308372 · 308372 · +3 more
  2. O-RING NSN 5331-01-650-3425 P/N SAE J515 HK178X0187H · J515 HK178X0187H · SAE J515 HK178X0187H · SAE J515 HK178 X 0187H · +3 more
  3. O-RING NSN 5331-01-647-5941 P/N AS3581-223 · 4400591-2230 · 285008-0001 ITEM NO. 68 · AS3581-223 CP · +3 more
  4. O-RING NSN 5331-01-647-5713 P/N AS3581-920 · 285008-0001 ITEM NO. 61 · 4410591-9200 · 285008-0001 ITEM NO. 61 CP · +3 more
  5. O-RING NSN 5331-01-647-5698 P/N AS3581-006 · 285008-0001 ITEM NO. 59 · 4400591-0060 · 4400591-0060 CP · +3 more
  6. O-RING NSN 5331-01-647-5589 P/N AS568-019T · D40-0001 ITEM 4 · AS568-019AMS3660 · AS568-019T CP · +3 more
  7. O-RING NSN 5331-01-645-9622 P/N AS3581-005 OXYGEN CLEAN · FVA8C-000-8W ITEM 62 · FVA8C-000-8W ITEM 62CP · AS3581-005 OXYGEN CLEANCP · +3 more
  8. O-RING NSN 5331-01-645-9585 P/N AS3581-210 OXYGEN CLEAN · FVL4E2-002-8 ITEM 65 · FVL4E2-002-8 ITEM 65CP · AS3581-210 OXYGEN CLEANCP · +3 more
  9. O-RING NSN 5331-01-645-8169 P/N AS3581-019 OXYGEN CLEAN · FVA8C-000-8W ITEM NO 66 · FVA8C-000-8W ITEM NO 66 CP · AS3581-019 OXYGEN CLEAN CP · +3 more
  10. O-RING NSN 5331-01-632-0324 P/N D40-0002 ITEM NO. 5 · AS3568-020 · MIL-STD-1330 · AS3568-020 · +3 more
  11. O-RING NSN 5331-01-628-4930 P/N 29-00728 · 22-38812 FIND NO 11 · 8-338N300-90 · 8-338N300-90CP · +3 more
  12. O-RING NSN 5331-01-622-9882 P/N 2502774-37 · 2502774-37 · 2-231 E515-80 · 2502774-37 · +3 more
  13. O-RING NSN 5331-01-618-5181 P/N 10673118-110 · N3575-752-110 · ORAR00110-N7T40 · 0700472 · +3 more
  14. O-RING NSN 5331-01-618-2293 P/N AMS-R-83485/1 · M83485/1-238 · M83485/1-238 · 5331PL2173863 · +3 more
  15. O-RING NSN 5331-01-610-8859 P/N 4464T239 · MS29513-202 · AS568-202 · F-WK-903-1 PC NO 98 · +3 more
  16. O-RING NSN 5331-01-609-1997 P/N N90-032 · AS-568-032 NITRILE 90 · N90032 · 930624 PC 20 · +3 more
  17. O-RING NSN 5331-01-606-0804 P/N D50-0020 ITEM 14 · D50-0020 ITEM 14 · SAE-AMS 7259 · M83248/2-042 · +3 more
  18. O-RING NSN 5331-01-606-0801 P/N D50-0020 ITEM 3 · D50-0020 ITEM 3 · SAE-AMS 7259 · M83248/2-024 · +3 more
  19. O-RING SET NSN 5331-01-588-8666 P/N D50-0037-SK · D50-0037 ITEMS 3,7,14,20,28 · D50-0037 NOTE 6 · D50-0037 ITEMS 3,7,14,20,28 · +3 more
  20. O-RING NSN 5331-01-588-0402 P/N M83461/1/158 · AMS-P-83461/1 · M83461/1-158 · G0018945 · +3 more
  21. O-RING NSN 5331-01-586-7516 P/N AS3581-471 · M83248/2-471 · AS3581-471 · SAE-AS3581 · +3 more
  22. O-RING NSN 5331-01-584-9951 P/N 287-6008P026 · M25988/1-026 · MS25988/1-026 · MIL-DTL-25988/1 · +3 more
  23. O-RING NSN 5331-01-582-4802 P/N V0894-90 2-224 · 2-224 V0894-90 · V894-90 2-224 · V0894 2-224 · +3 more
  24. O-RING NSN 5331-01-580-9364 P/N P05121 · E108130 FIND 23 · MIL-P-83461/1-284 · M83461/1-284 · +3 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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