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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 5331-00-368-5044 P/N 66G341-14 · 100T068 · 66G341-14 · 66G341-14 · +3 more
  2. O-RING NSN 5331-00-367-8725 P/N 4032519 · 4032519 · 4032519 · 4032519 · +3 more
  3. O-RING NSN 5331-00-364-9862 P/N PRP568-383-4024-65 · AS3578-383 · MS9021-383 · N0506 2-383 · +3 more
  4. O-RING NSN 5331-00-357-4405 P/N 325 NA151 · 325-8307 · 0019974945 · PRP325-8307 · +3 more
  5. O-RING NSN 5331-00-352-0327 P/N 00442 · 2AL241 · 2AL241 · 56470 · +3 more
  6. O-RING NSN 5331-00-349-8017 P/N 2532499-112 · 2532499-112 · 2532499-112 · ARP112-9250 · +3 more
  7. O-RING NSN 5331-00-339-6224 P/N 10300089 · 5F7054 · 5F7054 · 5F7054 · +3 more
  8. O-RING NSN 5331-00-322-0130 P/N PRP568-906-1235-60 · ASTM D2000-05 · AS568-906 · 206-160-906 · +3 more
  9. O-RING NSN 5331-00-297-6895 P/N 100T064 · 66G341-10 · 100T064 · 66G341-10 · +3 more
  10. O-RING NSN 5331-00-297-6308 P/N 902-7 · 10093D-PIECE 7 · 11-012 · J200F12 · +3 more
  11. O-RING NSN 5331-00-297-3611 P/N BK63 · 563-6700-932136ALT1PC12 · 563-6700-932147ALTPC12 · SS563S6700-932136PC12 · +3 more
  12. O-RING NSN 5331-00-292-0799 P/N 994-26 · 994-26 · 3234256 · 994-26 · +3 more
  13. O-RING NSN 5331-00-291-7359 P/N AN123986 · 84-1071 · AS3569-226 · AN123986 · +3 more
  14. O-RING NSN 5331-00-291-3286 P/N AS3570-222 · AN123882 · AN123882 · 5065D25 · +3 more
  15. O-RING NSN 5331-00-291-3285 P/N AS3570-211 · AN123871 · AN123871 · 5065014 · +3 more
  16. O-RING NSN 5331-00-288-2378 P/N 1-216 20763 · M25988/1-216 · MIL-DTL-25988/1 · MILR25988 · +3 more
  17. O-RING NSN 5331-00-288-2036 P/N M25988/1-222 · MIL-DTL-25988/1 · M25988/1-222 · 5331PL0655026 · +3 more
  18. O-RING NSN 5331-00-285-9876 P/N 40-3N137 · HN43 · 12P400D · HN39PC109 · +3 more
  19. O-RING NSN 5331-00-285-9865 P/N 3141039 · 3260050 · 3260050 · 3141039 · +3 more
  20. O-RING NSN 5331-00-285-9535 P/N 3200552 · 3372036 · 3372036 · 3200552 · +3 more
  21. O-RING NSN 5331-00-279-9321 P/N MIL-R-25988/1 · MIL-DTL-25988/1 · M25988/1-912 · 5331PL1695145 · +3 more
  22. O-RING NSN 5331-00-279-9316 P/N M25988/1-021 · M25988/1-021 · MIL-DTL-25988/1 · MIL-R-25988/1 · +3 more
  23. O-RING NSN 5331-00-279-4344 P/N M25988/1-232 · MILR25988 · MIL-DTL-25988/1 · 5331PL0655006 · +3 more
  24. O-RING NSN 5331-00-274-7854 P/N 99147 · 99136-53-5 · 99147 · 99136-53-5 · +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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