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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 5331-01-338-5551 P/N 818548-030 · AS568B-030 · AS568-030 AMS7276 · AS568 · +10 more
  2. O-RING NSN 5331-01-284-4972 P/N H-5478753PC24 · 182488 · AS3578-116 · 5331PL2068605 · +10 more
  3. O-RING NSN 5331-01-282-5694 P/N 353-7377 · 721-7069909-36 · PRP568-353-4067-70 · MS28775-353 · +10 more
  4. O-RING NSN 5331-01-247-1187 P/N 11-113 · BACP11L113 · BACP11L113 · BACP11L113 · +10 more
  5. O-RING NSN 5331-01-199-2296 P/N PE47136-25 · 017-19359 · AMS-R-83485/1 · M83485/1-017 · +10 more
  6. O-RING NSN 5331-01-197-1393 P/N 255573PC20 · 255574PC20 · 845-2180979 PIECE 39 · AS3581-339 · +10 more
  7. O-RING NSN 5331-01-195-8733 P/N M83461/1-454 · AMS-P-83461/1 · M83461/1-454 · MIL-P-83461/1 · +10 more
  8. O-RING NSN 5331-01-185-2584 P/N 237-7757 · PRP237-7757 · PRP568-237-4367-70 · M83461/1-237 · +10 more
  9. O-RING NSN 5331-01-168-1441 P/N 2152 2115-523 · HS 2152 2115-523 · 445-9748 · HE010227 · +10 more
  10. O-RING NSN 5331-01-160-4344 P/N M83461/1-327 · 1373RA PIECE 26 · AMS-P-83461/1 · M83461/1-327 · +10 more
  11. O-RING NSN 5331-01-160-0601 P/N M83461/1-213 · AMS-P-83461 · AMS-P-83461/1 · M83461/1-213 · +10 more
  12. O-RING NSN 5331-01-155-4202 P/N Y109101004N ITEM 36 · MS28775-162 · M83461/1-162 · MS28775-162 · +10 more
  13. O-RING NSN 5331-01-140-1164 P/N 23170 · 23170B · 23170 · 5331PL1935080 · +10 more
  14. O-RING NSN 5331-01-132-1925 P/N N90-84301 · 1355-024 · 20709-001 FIND · M83248/2-006 · +10 more
  15. O-RING NSN 5331-01-129-2003 P/N 006-11646 · PRP006-11646 · 287-6008P006 · MIL-R-25988/3 · +10 more
  16. O-RING NSN 5331-01-128-3956 P/N D35C2500004 ITEM 35 · D35C250004 ITEM 35 · D35C2500003 ITEM 27 · D35C2500004 ITEM 27 · +10 more
  17. O-RING NSN 5331-01-127-0849 P/N 4564-020 EU · C-6555/3080 PC 6 · 4564-020 EU · C-6555/3080 PC 6 · +10 more
  18. O-RING NSN 5331-01-126-8194 P/N ST1946-011 · ST1946-011 · ST1946-011 · ST1946-011 · +10 more
  19. O-RING NSN 5331-01-124-0530 P/N 2E2-24 ITEM 27 · AS568-230 · N72230 · 0000-230-9501 · +10 more
  20. O-RING NSN 5331-01-123-3303 P/N M83461/1-331 · AMS-P-813461/1 · M83461/1-331 · M83461/1-331 · +10 more
  21. O-RING NSN 5331-01-121-8092 P/N 085450 ITEM 123 · 085240 · 113-19359 · AS3581-113 · +10 more
  22. O-RING NSN 5331-01-119-1627 P/N 1034611-010 · 1034611-10 · 1034611-010 · MIL-R-25988/3 · +10 more
  23. O-RING NSN 5331-01-118-7701 P/N M83461/1-127 · M83461/1-127 · M83461/1-127 · AMS-P-83461/1 · +10 more
  24. O-RING NSN 5331-01-113-7794 P/N 211004582 · 801-6405342 FIND18 · 516-2005919ASSYB PIECE 32 · AS3209-115CP · +10 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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