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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 5331-01-179-0252 P/N 345-7757 · PRP345-7757 · PRP568-345-4367-70 · M83461/1-345 · +14 more
  2. O-RING NSN 5331-01-176-4014 P/N A107516-101-11 ITEM 23 · 803-6397434-X4XXXX-032 · ARP568-130MILG23652TYPE2 · AS3581-130 · +14 more
  3. O-RING NSN 5331-01-160-2508 P/N M83461/1-110 · M83461/1-110 · AMS-P-83461/1 · MIL-P-83461/1 · +14 more
  4. O-RING NSN 5331-01-158-1913 P/N PRP264-11646 · 264-11646 · 595029-6 · 595029-6 · +14 more
  5. O-RING NSN 5331-01-156-0093 P/N 016-11648 · PRP016-11648 · 950490C1 · 182563 · +14 more
  6. O-RING NSN 5331-01-146-4563 P/N M83461/1-132 · AMS-P-83461/1 · M83461/1-132 · MIL-P-83461/1 · +14 more
  7. O-RING NSN 5331-01-129-3145 P/N PRP904-11648 · 904-11648 · U522218-5 · AMS-R-25988 · +14 more
  8. O-RING NSN 5331-01-123-3300 P/N AMS-P-83461/1 · M83461/1-126 · MIL-P-83461/1 · M83461/1-126 · +14 more
  9. O-RING NSN 5331-01-123-3299 P/N 2-119PS1-30-5 · M83461/1-119 · AMS-P-813461/1 · M83461/1-119 · +14 more
  10. O-RING NSN 5331-01-123-3297 P/N 1197348PC20 · 845-244201PC7,0.500IN · M83461/1-117 · AMS-P-83461/1 · +14 more
  11. O-RING NSN 5331-01-120-9550 P/N 2246F PIECE 158 · D4160 ITEM 25 · AMS 7259 · AS3581-213 · +14 more
  12. O-RING NSN 5331-01-119-3220 P/N D50-0070 ITEM 19 · D50-0070 ITEM 19 · 788696-35 · 4788696-35 · +14 more
  13. O-RING NSN 5331-01-111-2306 P/N 047-737-70 · 7377-047 · DS-933816 · P48026-047 · +14 more
  14. O-RING NSN 5331-01-106-7289 P/N 845-7286651 ITEM 31 · ST1050-166 · AS3209-166 · M83248/1-166 · +14 more
  15. O-RING NSN 5331-01-105-9156 P/N 7377-271 · P48026-271 · 4067-70-271 · MS28775-271 · +14 more
  16. O-RING NSN 5331-01-101-8014 P/N 7377-278 · MS28775-278 · P48026-278 · 4067-70-278 · +14 more
  17. O-RING NSN 5331-01-099-2557 P/N AS3581-012CP · M83248-2-012CP · AS3581-012CP · M83248-2-012 · +14 more
  18. O-RING NSN 5331-01-009-7514 P/N SP100-28 · 500000-0028-0002 · TO33A2-2-35-14FIGURE27-12 · AS568-325 · +14 more
  19. O-RING NSN 5331-01-009-6735 P/N NAS1593-050 · M83248/1-050 · AS3209-050 · AMS7276 · +14 more
  20. O-RING NSN 5331-01-005-4062 P/N 2642-820-85 ITEM 24 · 845-5580474 ITEM 24 · 556-7015842-14 · NAS1593-340 · +14 more
  21. O-RING NSN 5331-01-005-3214 P/N ARP568-343-V8 · AS3209-343 · MIL-R-83248/1 · M83248/1-343 · +14 more
  22. O-RING NSN 5331-01-005-3205 P/N 845-7286652 ITEM 39 · 3426RA PIECE 18 · 3427RA PIECE 22 · AS3209-348 · +14 more
  23. O-RING NSN 5331-01-005-0531 P/N AS3209-384 · AMS7276 · M83248/1-384 · MIL-R-83248/1 · +14 more
  24. O-RING NSN 5331-00-990-7749 P/N 007-11307 · MS9068-007 · AS568-007AMS3304 · AS3582-007 · +14 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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