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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.

Filter

53,078 items

  1. O-RING NSN 5331-01-275-1195 P/N AS28775 · MIL-P-25732 · MS28775-108 · RV 99-60-*/4108-77 · +5 more
  2. O-RING NSN 5331-01-272-7464 P/N M83485/1-029 · AMS-R-83485 · M83485/1-029 · 74222 FIND 11 · +5 more
  3. O-RING NSN 5331-01-272-0394 P/N PRP352-8307 · 352-8307 · J120R1 · 120R1 CLASS 2 SIZE 352 AMS3215 · +5 more
  4. O-RING NSN 5331-01-272-0393 P/N 453-8307 · PRP453-8307 · J120R1 · 120R1 CLASS 2 SIZE 453 AMS3215 · +5 more
  5. O-RING NSN 5331-01-271-4286 P/N SAE AS3209-011 · AS568B · AS3209-011 · SAE AMS7276G · +5 more
  6. O-RING NSN 5331-01-269-7846 P/N PRP047-7177 · 047-7177 · 44741PL REV C FIND 25 · AS568-047AMS3215 · +5 more
  7. O-RING NSN 5331-01-252-0348 P/N 7M79-214 · AS25988-214 · M25988/3-214 · MIL-R-25988/3 · +5 more
  8. O-RING NSN 5331-01-249-4229 P/N 220 · MS28775-220 · MS28775-220 · AS38775-220 · +5 more
  9. O-RING NSN 5331-01-239-9247 P/N MS28775-367 · AS28775 · MIL-P-25732 · MIL-P-25732 · +5 more
  10. O-RING NSN 5331-01-237-7661 P/N AS3581-356 · AMS7259 · M83248/2-356 · MIL-R-83248/2 · +5 more
  11. O-RING NSN 5331-01-235-6511 P/N 6305-53 PIECE 49 · 6305-53 PC49 MI · 5923402-49 · MIL-P-25732 32.85IDX0.275 WIDTH · +5 more
  12. O-RING NSN 5331-01-219-0468 P/N E3355 PC NO. 44A · NB398906-72 · AS568B-906 · AS568-906 · +5 more
  13. O-RING NSN 5331-01-211-3125 P/N AS3581-037 · AMS7259 · MIL-R-83248/2 · M83248/2-037 · +5 more
  14. O-RING NSN 5331-01-209-7297 P/N 10003921 · S000145 · 118476-A · 118476-A · +5 more
  15. O-RING NSN 5331-01-200-6288 P/N PRP114-11648 · 114-11648 · M25988/4-114 · MIL-R-25988/4 · +5 more
  16. O-RING NSN 5331-01-198-9692 P/N 122593 · 554505 PIECE 31 · 122593 · 008-RG006-25 · +5 more
  17. O-RING NSN 5331-01-196-6562 P/N 9933310 · 10524100 · 993 3310 · 7421806982 · +5 more
  18. O-RING NSN 5331-01-194-8663 P/N 120-11648 · PRP120-11648 · MIL-R-25988/4 · M25988/4-120 · +5 more
  19. O-RING NSN 5331-01-194-4702 P/N AMS 7273 · MS9967-225 · AS9967-225 · 5331PL0658489 · +5 more
  20. O-RING NSN 5331-01-185-2591 P/N M83461/1-245 · AMS-P-83461/1 · M83461/1-245 · MIL-P-83461/1 · +5 more
  21. O-RING NSN 5331-01-185-2587 P/N M83461/1-234 · AMS-P-83461/1 · M83461/1-234 · MIL-P-83461/1 · +5 more
  22. O-RING NSN 5331-01-185-2586 P/N M83461/1-239 · AMS-P-83461/1 · M83461/1-239 · MIL-P-83461/1 · +5 more
  23. O-RING NSN 5331-01-185-2583 P/N AMS-P-83461/1 · M83461/1-244 · MIL-P-83461/1 · M83461/1-244 · +5 more
  24. O-RING NSN 5331-01-185-2582 P/N AMS-P-83461/1 · M83461/1-137 · MIL-P-83461/1 · M83461/1-137 · +5 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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