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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 5331-01-383-0103 P/N M83461/1-040 · AMS-P-83461/1 · MIL-P-83461/1B · M83461/1-040 · +3 more
  2. O-RING NSN 5331-01-381-9994 P/N B39892472 · 39834174 · M83248/2-341 · MIL-R-83248/2 · +3 more
  3. O-RING NSN 5331-01-233-8696 P/N 364-48833-000 ITEM 94 · 028-12211-000 · AS568-250 NEOPR ENE-1 · 2-250 · +3 more
  4. O-RING NSN 5331-01-232-5099 P/N 2-276E540-80 · 00442E · 1JA3368J87 · 2-276 E515-80 · +3 more
  5. O-RING NSN 5331-01-232-4255 P/N 1C-4355 PIECE 63 · MS28775-394 · MS28775-394 · 2-394N304-75 · +3 more
  6. O-RING NSN 5331-01-232-4060 P/N MS28775-134 · 5330PL0889550 · MS28775-134 · 280038-21 · +3 more
  7. O-RING NSN 5331-01-232-2372 P/N AMS7259 · AS3581-340 · M83248/2-340 · 2-340 V894-90 · +3 more
  8. O-RING NSN 5331-01-232-2145 P/N P92235 · P-191801A · 27607 · P92235 · +3 more
  9. O-RING NSN 5331-01-232-1485 P/N AS3581-377 · A,S7259 · M83248/2-377 · MIL-R-83248/2 · +3 more
  10. O-RING NSN 5331-01-230-3248 P/N 1A20312H04 · 1A20312H04 · 44762-071-00-7 · 44762-071-00-7 · +3 more
  11. O-RING NSN 5331-01-227-2810 P/N 0561C0031-11 · 2-245 · 09-245 · 2-245N674-70 · +3 more
  12. O-RING NSN 5331-01-226-8686 P/N 324449 · 1096230130 · 1096230130 · 1096230130 · +3 more
  13. O-RING NSN 5331-01-225-6343 P/N 803-2177934-X7XX-45MOD · AS568-139 · AS139-SR728A-65 · ARP568-139 MIL- G-22050-1 · +3 more
  14. O-RING NSN 5331-01-224-9149 P/N MS28775-147 · MIL-P-25732 · MS28775-147 · 2-147N304-75 · +3 more
  15. O-RING NSN 5331-01-224-8232 P/N AS568-135 · 25141-135STD · A25141-135-STD · AS-135-B17-70 · +3 more
  16. O-RING NSN 5331-01-223-2668 P/N MS28775-149 · MS28775-149 · 230079079 · 2-149N304-75 · +3 more
  17. O-RING NSN 5331-01-089-2575 P/N 690393-2 REV E ITEM 17 · M83248/2-907 · MIL-R-83248/2 · AS3581-907 · +3 more
  18. O-RING NSN 5331-01-089-0098 P/N M25988/1-155 · M25988/1-155 · M25988/1-155 · MIL-DTL-25988/1 · +3 more
  19. O-RING NSN 5331-01-088-6870 P/N M83248/2-901 · SAE AS 3581 · MIL-R-83248/2 · M83248/2-901 · +3 more
  20. O-RING NSN 5331-01-086-4414 P/N PRP117-7377 · 8.0-51-24 · AS568-117MILP5516CLASSB · 8-0-51-24 · +3 more
  21. O-RING NSN 5331-01-085-7030 P/N RA10200-89 · NE-159-8273 · 9169M40P200 · 9169M40P200 · +3 more
  22. O-RING NSN 5331-01-084-4744 P/N M25988/3-033 · MIL-R-25988/3 · MIL-DTL-25988/3 · 538395-033 · +3 more
  23. O-RING NSN 5331-01-083-6403 P/N MIL-G-21569B AS568A-020 · 2-020 · 1N141200013 · D3112420A · +3 more
  24. O-RING NSN 5331-01-082-8593 P/N 32990 · 321387 · 32990 · 321387 · +3 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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