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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 5331-01-143-6591 P/N PRP568-904AMS3304 · AS3582-904 · MS9068-904 · MS9068-904 · +3 more
  2. O-RING NSN 5331-01-133-0533 P/N MS28775-284 · MIL-P-25732 · MS28775-284 · 2-284 · +3 more
  3. O-RING NSN 5331-01-132-1552 P/N 12309663-1 · 12309663-1 · 2-010 · 2-010 E1157-60 · +3 more
  4. O-RING NSN 5331-01-130-9664 P/N M25988/3-113 · MIL-R-25988/3 · MIL-DTL-25988/3 · BS 1806-113 · +3 more
  5. O-RING NSN 5331-01-130-9663 P/N GS570J2J124 · MIL-DTL-25988/3 · M25988/3-124 · MIL-R-25988/3 · +3 more
  6. O-RING NSN 5331-01-130-9661 P/N 2-028L608-6 · MIL-R-25988/3 · M25988/3-028 · MIL-DTL-25988/3 · +3 more
  7. O-RING NSN 5331-01-130-8190 P/N 14737-146 · PRP568-146-1133-60 · MIL-DTL-25988/3 · M25988/3-146 · +3 more
  8. O-RING NSN 5331-01-129-9440 P/N 10-247918-22 · M25988/3-022 · MIL-R-25988/3 · MIL-DTL-25988/3 · +3 more
  9. O-RING NSN 5331-01-129-3153 P/N GS570J2J253 · MIL-R-25988/3 · MIL-DTL-25988/3 · M25988/3-253 · +3 more
  10. O-RING NSN 5331-01-129-3152 P/N GS570J2J268 · MIL-DTL-25988/3 · MIL-R-25988/3 · M25988/3-268 · +3 more
  11. O-RING NSN 5331-01-129-3146 P/N 16606A54-4 · 16606A36-4 · M25988/3-009 · MIL-DTL-25988/3 · +3 more
  12. O-RING NSN 5331-01-129-3139 P/N MIL-R-25988/4 · M25988/4-008 · 2-008 L806-80 · 2-008L1218-80 · +3 more
  13. O-RING NSN 5331-01-127-7612 P/N 639AS3165-040 · NAS1611-040 · NAS1601 · NAS1613 · +3 more
  14. O-RING NSN 5331-01-125-6268 P/N 3-916N-9 · 3-916N552-90 · RE0049789 · P-ZLAB-0038459 · +3 more
  15. O-RING NSN 5331-01-124-6641 P/N 457-60-462 · MS29513-462 · 1793-462 · SR-822A-60-462 · +3 more
  16. O-RING NSN 5331-01-124-2689 P/N 8630B · RR1182S · 8630B · RR1182S · +3 more
  17. O-RING NSN 5331-01-123-9537 P/N 135P02 · 135P02 · FM-86520 PC 17 · 411884011B · +3 more
  18. O-RING NSN 5331-01-123-5659 P/N 1298023-4 · 1298023-4 · 291.68X3.53 41B8 · 1298023-4 · +3 more
  19. O-RING NSN 5331-01-120-6841 P/N 14177B · 14177 · 06157 · RAR3010 · +3 more
  20. O-RING NSN 5331-01-120-4116 P/N MS28775-470 · 76719-03X3PC23 · MS28775-470 · 2-470 N0304-75 · +3 more
  21. O-RING NSN 5331-01-117-1522 P/N AS3582-228 · AMS3304 · AS3582-228 · MS9068-228 · +3 more
  22. O-RING NSN 5331-01-116-8114 P/N S9412-032 · M25988/2-032 · MIL-R-25988/2 · MIL-DTL-25988/2 · +3 more
  23. O-RING NSN 5331-01-114-4936 P/N MIL-R-25988/3 · M25988/3-011 · MIL-DTL-25988/3 · 538395-11 · +3 more
  24. O-RING NSN 5331-01-114-0983 P/N M3HK910A1-10B37EF31EO78 · AS568-237 · AS568B-237 · 58-03-38 · +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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