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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 5331-01-145-5377 P/N MA128-21045 · 10004853 · CU3007442 · 124226 · +4 more
  2. O-RING NSN 5331-01-145-3920 P/N 69483L103-6237 · MS28775-164 · 5331PL1992035 · MS28775-164 · +4 more
  3. O-RING NSN 5331-01-145-3163 P/N 1HT288 · 2CX313 · 2GL65 · 11-015 · +4 more
  4. O-RING NSN 5331-01-141-1818 P/N MIL-DTL-25988/4 · M25988/4-019 · MIL-R-25988/4 · 5331PL2024356 · +4 more
  5. O-RING NSN 5331-01-138-7675 P/N W144516 · F32213G1 · W144516 · F32213G1 · +4 more
  6. O-RING NSN 5331-01-138-5522 P/N AS3582-334 · MS9068-334 · 74553F01 · 2-334S604-7 · +4 more
  7. O-RING NSN 5331-01-137-9007 P/N AS3581-23 · AMS7259D · M83248/2-023 · MIL-R-83248/2 · +4 more
  8. O-RING NSN 5331-01-137-8392 P/N AS3581-328 · AMS7259D · MIL-R-83248/2 · M83248/2-328 · +4 more
  9. O-RING NSN 5331-01-133-9791 P/N M83248/2-009 · MIL-R-83248/2 · 5331PL1262955 · 2-009 V709-90 · +4 more
  10. O-RING NSN 5331-01-133-8653 P/N 39824274 · MIL-R-83248/2 · M83248/2-242 · MIL-R-83248 · +4 more
  11. O-RING NSN 5331-01-133-4717 P/N AMS-P-83461/1 · M83461/1-144 · MIL-P-83461/1 · M83461/1-144 · +4 more
  12. O-RING NSN 5331-01-132-3422 P/N AS568-908 · 3-908S604-70 · 321233P1 · 321233P1 · +4 more
  13. O-RING NSN 5331-01-132-0273 P/N MIL-R-25988/3 · M25988/3-014 · MIL-DTL-25988/3 · 932118-14 · +4 more
  14. O-RING NSN 5331-01-129-9841 P/N AS568B-204 · 101-29100 · D2000 · AS568-204 · +4 more
  15. O-RING NSN 5331-01-129-9672 P/N BDS3115-010CH/3 · BDS3115-010CH · BDS3115-010CH/3 · BDS3115-010CH · +4 more
  16. O-RING NSN 5331-01-129-2730 P/N SAE SAE AS3581-240 · MIL-R-83248 · M83248/2-240 · 5331PL1262783 · +4 more
  17. O-RING NSN 5331-01-129-2022 P/N MIL-DTL-25988/4 · MIL-R-25988/4 · M25988/4-013 · 5331PL1856867 · +4 more
  18. O-RING NSN 5331-01-129-2016 P/N 126-11648 · PRP126-11648 · MIL-DTL-25988/4 · MIL-R-25988/4 · +4 more
  19. O-RING NSN 5331-01-129-2014 P/N PRP129-11648 · 129-11648 · M25988/4-129 · MIL-R-25988/4 · +4 more
  20. O-RING NSN 5331-01-129-2006 P/N M25988/3-328 · MIL-R-25988/3 · MIL-DTL-25988/3 · 2-328L449-6 · +4 more
  21. O-RING NSN 5331-01-129-0631 P/N 00426-045 F70 · LRC63047-14 · ST7M251-14 · 1966-020A · +4 more
  22. O-RING NSN 5331-01-128-9879 P/N 2-047 L737-65 · 2-047 L737-65 · 2-047 · 2-047 LM152-60 · +4 more
  23. O-RING NSN 5331-01-128-9585 P/N MIL-R-83248/2-011 · 244011-0110 · 54360-1 ITEM 24 · 283096-0001 ITEM 62 · +4 more
  24. O-RING NSN 5331-01-125-1731 P/N AS3581-215 · AMS 7259 · MIL-R-83248/2 · M83248/2-215 · +4 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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