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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 5331-00-167-5135 P/N AS3209-149 · AMS7276G · M83248/1-149 · MILR83248 · +24 more
  2. O-RING NSN 5331-01-113-1320 P/N 023-7507 · 2-023N219-7 · 2507294-85 · 634862 · +23 more
  3. O-RING NSN 5331-01-094-5959 P/N 7377-256 · V3282PIECE7 · 551-7384730-F204 · P48026-256 · +23 more
  4. O-RING NSN 5331-00-882-4963 P/N MS28775-149 · MS28775-149 · MS28775-149 · MIL-P-25732 · +23 more
  5. O-RING NSN 5331-00-810-9659 P/N 908-17107 · PRP3-908-17107 · AE-965-12 ITEM 38 · M8348/1-908 · +23 more
  6. O-RING NSN 5331-01-078-4503 P/N CM1-132-B46 · 01-435-0366-4 PIECE 80 · AS568-132 · AMS7276 · +23 more
  7. O-RING NSN 5331-01-067-3446 P/N 6704225 · MS28775-252 · 6704225 · PRP568-252-7377-70 · +23 more
  8. O-RING NSN 5331-01-043-1419 P/N PRP016-7757 · 016-7757 · PRP568-016-4367-70 · AMS-P-83461 · +23 more
  9. O-RING NSN 5331-00-599-1000 P/N 7377-338 · P48026-338 · PRP568-338-4067-70 · 4067-70-338 · +23 more
  10. O-RING NSN 5331-00-585-7487 P/N 125-7377 · 914-25-711-70 · 7377-125 · MS28775-125 · +23 more
  11. O-RING NSN 5331-00-530-6990 P/N DD-4836 ITEM 16 · DD-4633 NO 16 · J221P157 · NAS1593-157 · +23 more
  12. O-RING NSN 5331-00-527-8116 P/N GS570EM252 · 7866-252 · 60-P-31-252 · 10V60-141-252 · +23 more
  13. O-RING NSN 5331-00-482-7055 P/N MS29513-276 · 7866-276 · 60-P-31-276 · PX1775-276 · +23 more
  14. O-RING NSN 5331-00-404-1473 P/N PL D2500FF-B16.24 IT 12 · PL D2500FF-B16.24 IT 12 · AMS7276 · M83248/1-250 · +23 more
  15. O-RING NSN 5331-00-403-6396 P/N 7866-039 · S9412-130 · 60-P-31-039 · PX-1775-039 · +23 more
  16. O-RING NSN 5331-00-292-7565 P/N 7866-254 · 60-P-31-254 · 853836-00 · MS29513-254 · +23 more
  17. O-RING NSN 5331-00-291-3312 P/N 7866-256 · 60-P-31-256 · PX1775-256 · 10V60-141-256 · +23 more
  18. O-RING NSN 5331-00-291-3083 P/N MS29513-144 · 7866-144 · 60-P-31-144 · MS29513-144 · +23 more
  19. O-RING NSN 5331-00-265-1095 P/N 7866-128 · 914-28 · 129-C-69 · 128-C-69 · +23 more
  20. O-RING NSN 5331-00-252-6056 P/N 7866-142 · 60-P-31-142 · PX-1775-142 · 10V60-141-142 · +23 more
  21. O-RING NSN 5331-00-252-6054 P/N 7866-331 · 60-P-31-331 · 14-669P · 65-15257 PIECE 126 · +23 more
  22. O-RING NSN 5331-00-252-6052 P/N 7866-139 · 60-P-31-139 · PX-1775-139 · 10V60-141-139 · +23 more
  23. O-RING NSN 5331-00-245-5611 P/N 02455611 32ZC3KZ 07482J221P044 · 10510740 · 937447 · NAS1593-044 · +23 more
  24. O-RING NSN 5331-00-239-5358 P/N 3206913 · 3206913 · SN5750-18PC45 · Y1022B1PC52 · +23 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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