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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 5331-01-165-4660 P/N 21522115-830 · 21522115-830 · 445-9776 · 2152 2115-830 T AKT 287 · +6 more
  2. O-RING NSN 5331-01-160-4347 P/N M83461/1-333 · AMS-P-83461/1 · MIL-P-83461/1 · M83461/1-333 · +6 more
  3. O-RING NSN 5331-01-160-4345 P/N M83461/1-328 · AMS-P-83461/1 · M83461/1-328 · MIL-P-83461/1 · +6 more
  4. O-RING NSN 5331-01-160-4337 P/N M83461/1-438 · AMS-P-83461/1 · M83461/1-438 · MIL-P-83461/1 · +6 more
  5. O-RING NSN 5331-01-160-4335 P/N M83461/1-436 · M83461/1-436 · AMS-P-83461/1 · MIL-P-83461/1 · +6 more
  6. O-RING NSN 5331-01-160-4334 P/N 6503-86PIECE307 · AMS-P-83461/1 · M83461/1-435 · MIL-P-83461/1 · +6 more
  7. O-RING NSN 5331-01-160-4332 P/N 6503-86PIECE306 · M83461/1-433 · AMS-P-83461/1 · MIL-P-83461/1 · +6 more
  8. O-RING NSN 5331-01-160-4328 P/N M83461/1-347 · AMS-P-83461/1 · MIL-P-83461/1 · M83461/1-347 · +6 more
  9. O-RING NSN 5331-01-157-6351 P/N AS568-022 3CH915B34EO16EO36 · 6100-05 · 2-022N552-90 · 2-022 N552-90 · +6 more
  10. O-RING NSN 5331-01-155-3409 P/N PRP222-19357 · 222-19357 · AS3209-222 · AS568-222AMS7276 · +6 more
  11. O-RING NSN 5331-01-148-2691 P/N AS3581-038 · AMS7259D · AS568-038MIL-G-23652TY2 · M83248/2-038 · +6 more
  12. O-RING NSN 5331-01-143-8087 P/N 1354-706 · 1354-138 · M25988/4-012 · MIL-DTL-25988/4 · +6 more
  13. O-RING NSN 5331-01-141-7949 P/N 299944-400 ITEM · 299944-200 ITEM · 299944-300 ITEM · 299944-100 ITEM · +6 more
  14. O-RING NSN 5331-01-137-6903 P/N 3019T29P21 · 3019T29P21 · 3019T29P21 · 52564301 · +6 more
  15. O-RING NSN 5331-01-131-2279 P/N AS568-465 MIL-P-5315 · MS29513-465 · MS29513-465 · 2-465 N602-70 · +6 more
  16. O-RING NSN 5331-01-131-1896 P/N 803-5184144 PIECE 67 · M83461/1-124 · AMS-P-83461/1 · M83461/1-124 · +6 more
  17. O-RING NSN 5331-01-131-1895 P/N 845-7108571-ASSEMBLY-C ITEM 32 · M83461/1-122 · AMS-P-83461/1 · M83461/1-122 · +6 more
  18. O-RING NSN 5331-01-129-3137 P/N 182591 · MIL-R-25988/4 · M25988/4-902 · 5331PL1931412 · +6 more
  19. O-RING NSN 5331-01-129-2015 P/N 127-11648 · PRR127-11648 · M25988/4-127 · MIL-R-25988/4 · +6 more
  20. O-RING NSN 5331-01-128-3954 P/N M83461/1-219 · AMS-P-83461/1 · MIL-P-83461/1 · M83461/1-219 · +6 more
  21. O-RING NSN 5331-01-128-0432 P/N J120 · AS3581-135 · J120, CLII,SZ135 · MIL-R-83248/2 · +6 more
  22. O-RING NSN 5331-01-122-5819 P/N 203253 · AS568-282 · MIL-G-21569 · 2-282 · +6 more
  23. O-RING NSN 5331-01-114-5193 P/N MS28775-364 · MIL-P-25732 · AS568-364MILP25732 · MS28775-364 · +6 more
  24. O-RING NSN 5331-01-113-9862 P/N 07-FD-005-N · AS568-330MIL-G-21569 CL 1 · MIL-S-21569 CL 1 · MIL-G-21569 CL 1 · +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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