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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 5331-01-412-3841 P/N ST1946-025 · ST1946-025 · ST1946-025 · ST1946-025 · +6 more
  2. O-RING NSN 5331-01-412-3642 P/N M83485/1-142 · AMC-R-83485 · M834585/1-142 · AMS-R-83485/1 · +6 more
  3. O-RING NSN 5331-01-399-7878 P/N 211004784 · 801-6404716 FIND 22 · AS3209-220CP · M83248/2-220 · +6 more
  4. O-RING NSN 5331-01-399-5816 P/N 150-6404646-10 · AMC-R-83485 · M83485/1-233 · M83485/1-233 · +6 more
  5. O-RING NSN 5331-01-397-5134 P/N 7-5081 ITEM 21 · 7-5081 ITEM 21 · AMC-R-83485 · M83485/1-141 · +6 more
  6. O-RING NSN 5331-01-390-7227 P/N AMS-R-83412/1 · AMS-R-83412 · M83412/1-905 · MIL-R-83412 · +6 more
  7. O-RING NSN 5331-01-385-3728 P/N M83461/2-924 · M83461/2-924 · 3-924N756-75 · N0756 3-924 · +6 more
  8. O-RING NSN 5331-01-232-1486 P/N 609-4676623ITEM 17 · 609-4676623ITEM 31 · MIL-P-25732/28.3 13ID X .275 CS · MIL-P-25732 · +6 more
  9. O-RING NSN 5331-01-229-9612 P/N 803-7106793-3-2-031 · PL44616-121H FIND NO 71 · M83461/1-153 · AMS-P-83461/1 · +6 more
  10. O-RING NSN 5331-01-088-8643 P/N 101-29000 · AS568-904MIL-P-83461 · 700-904-355C · 10163893 · +6 more
  11. O-RING NSN 5331-01-088-6871 P/N AS3581-932 · MIL-R-83248/2 · M83248/2-932 · 5331PL1259341 · +6 more
  12. O-RING NSN 5331-01-081-3142 P/N 339076 · 1PS138 · 1PS138 · AS568-171 · +6 more
  13. O-RING NSN 5331-01-079-6812 P/N 69494K906 · M25988/2-906 · MIL-R-25988/2 · MIL-DTL-25988/2 · +6 more
  14. O-RING NSN 5331-01-078-5129 P/N 912-19357 · 6843332-12 · PRP568-912-9009-75 · AS3084-12 · +6 more
  15. O-RING NSN 5331-01-077-5842 P/N AS568-005MILR6855CL2 · ARP568-005MILR6855CL2 · 4400181-0050 · 226624 ITEM 61 J200X5 · +6 more
  16. O-RING NSN 5331-01-076-3197 P/N J221P124WE · M83248/1-124 · M83248/1-124 · MIL-R-83248/1 · +6 more
  17. O-RING NSN 5331-01-072-1665 P/N 957C048140-1 · 048140-1 · 2231510 · 2231510 · +6 more
  18. O-RING NSN 5331-01-067-3448 P/N PRP568-323-4067-70 · AS28775-323 · MIL-P-2573C · MS28775-323 · +6 more
  19. O-RING NSN 5331-01-064-7235 P/N 2-225S604-70 · 07A568-225S · D894 ITEM67 · 123-225-5 · +6 more
  20. O-RING NSN 5331-01-064-7234 P/N 123-147-5 · D904 ITEM48 · 123-147-2 · AMS 3304 · +6 more
  21. O-RING NSN 5331-01-062-7367 P/N 203-4678536ITEM7 · 203-4678542ITEM14 · 54-66-8590 · 203-4678542 ITEM 14 · +6 more
  22. O-RING NSN 5331-01-058-3367 P/N 1U0002-018 · P503094 · 43P978 · AS568C-108 · +6 more
  23. O-RING NSN 5331-01-057-3134 P/N AS3581-104 · AMS7259 · MIL-R-83248 · M83248/2-104 · +6 more
  24. O-RING NSN 5331-01-053-7020 P/N P48026-102 · PRP568-102-4067-70 · MIL-P-25732 · MS28775-102 · +6 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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