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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 5331-01-160-4329 P/N 6480-57PIECE577 · AMS-P-83461/1 · M83461/1-429 · M83461/1-429 · +8 more
  2. O-RING NSN 5331-01-157-6350 P/N 117-1487 · PRP117-1487 · PRP568-117-4077-70 · MS29561-117 · +8 more
  3. O-RING NSN 5331-01-154-3998 P/N 1KK529 · 3-906N304-75 · CA11307 PIECE 255 · 3-6PSI-30-5 · +8 more
  4. O-RING NSN 5331-01-149-9679 P/N 10625534 · AS568B-341 · OR-341N · B 2575.146.821 · +8 more
  5. O-RING NSN 5331-01-146-3609 P/N MS28775-014 · 5331PL2247994 · MS28784-14 · MS28775-014 · +8 more
  6. O-RING NSN 5331-01-141-1915 P/N AMS-P-83461/1 · M83461/1-131 · M83461/1-131 · MIL-P-83461/1-131 · +8 more
  7. O-RING NSN 5331-01-129-3159 P/N 3182556 · MIL-DTL-25988/4 · MIL-R-25988/4 · M25988/4-009 · +8 more
  8. O-RING NSN 5331-01-128-4873 P/N AMS-P-83461/1 · AMS-P-83461 · M83461/1-216 · M83461/1-216 · +8 more
  9. O-RING NSN 5331-01-123-5662 P/N 1298023-35 · 1298023-8 · 1298023-35 · 278.75X6.98 41B8 · +8 more
  10. O-RING NSN 5331-01-123-3302 P/N 40490-9 FIND NO 9 · 40444-4 FIND NO 9 · AMS-P-83461/1 · M83461/1-218 · +8 more
  11. O-RING NSN 5331-01-117-3468 P/N AS568-117 · ASTM-D2000 M3CH91B34EO16EO36 · 6.363-232.0 · 2-117 N552-90 · +8 more
  12. O-RING NSN 5331-01-117-1076 P/N M83461/1-123 · AMS-P-83461/1 · M83461/1-123 · MIL-P-83461/1 · +8 more
  13. O-RING NSN 5331-01-107-4951 P/N 099-113 · AMS-P-83461/1 · AMS-P-83461 · M83461/1-113 · +8 more
  14. O-RING NSN 5331-01-107-3121 P/N AMS-P-83461/1 · M83461/1-111 · MIL-P-83461/1 · M83461/1-111 · +8 more
  15. O-RING NSN 5331-01-106-0943 P/N 649-393-171-0 · AS3209-171 · M83248/1-171 · MIL-R-83248/1 · +8 more
  16. O-RING NSN 5331-01-106-0941 P/N 7377-466 · P48026-466 · 4067-70-466 · MS28775-466 · +8 more
  17. O-RING NSN 5331-01-104-4906 P/N D50-0013 ITEM 3 · D50-0013 ITEM 3 · AS3581-128 · MIL-R-83248/2 · +8 more
  18. O-RING NSN 5331-01-101-9486 P/N 200005 FIND NO.24 · AMS-P-83461/1 · M83461/1-008 · MIL-P-83461/1 · +8 more
  19. O-RING NSN 5331-01-096-8817 P/N 4564-226,FG · PL-1059 PART 003226 · 4564-226 · 003226 · +8 more
  20. O-RING NSN 5331-01-091-1256 P/N N2789 · 695-00016 · N2789 · 134904 · +8 more
  21. O-RING NSN 5331-01-029-7452 P/N 242-8307 · PRP242-8307 · AS568-242 · MIL-G-21569 · +8 more
  22. O-RING NSN 5331-01-028-6511 P/N 130981-3N · AMS7259 · AS3581-333 · MIL-R-83248/2 · +8 more
  23. O-RING NSN 5331-01-020-2317 P/N PRP255-7507 · 255-7507 · AS568-255 · 2-255-N674-70 · +8 more
  24. O-RING NSN 5331-01-019-2597 P/N 6305-11-PC86 · 6305-53 PC66 MI · D82315 ITEM 25 · PRP568-475-4067-70 · +8 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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