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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 5331-01-458-4961 P/N M83461/1-108 · M83461/1-108 · 10117201 · M83461/1-108 · +1 more
  2. O-RING NSN 5331-01-457-5110 P/N ST1946-213 · MIL-R-83485/1 · M83485/1-213 · M83485/1-213 · +1 more
  3. O-RING NSN 5331-01-457-4622 P/N 2601425-037 · M70341/1-037 · 2601425-037CP · M70341/1-037CP · +1 more
  4. O-RING NSN 5331-01-457-4613 P/N M70341/1-039 · 2601425-039 · M70341/1-038CP · 2601425-038CP · +1 more
  5. O-RING NSN 5331-01-457-4611 P/N M70341/1-040 · 2601425-040 · M70341/1-040CP · 2601425-040CP · +1 more
  6. O-RING NSN 5331-01-457-4596 P/N M70341/1-034 · M70341/1-034CP · 2601425-034C9 · 2601425-034CP · +1 more
  7. O-RING NSN 5331-01-457-4588 P/N M70341/1-022 · 2601425-022 · 2601425-022CP · M70341/1-022CP · +1 more
  8. O-RING NSN 5331-01-456-6655 P/N M22050-1-243 · E65243-5714-65 · MIL-G-22050GRADE1SIZEAS568-243 · MIL-DTL-22050 · +1 more
  9. O-RING NSN 5331-01-456-5728 P/N 109-0078 · 12KP789 · 109-0078 · CV182440 · +1 more
  10. O-RING NSN 5331-01-456-2688 P/N 449-7548 · 10202623_2831076 · 102-026-23 · 280 087 04 ITEM 18 · +1 more
  11. O-RING NSN 5331-01-455-8664 P/N A-A-59588 CL 2B GR 70 · AS568-019 · ZZ-R-765CL2BGR70/AS568-019 · ZZ-R-765 · +1 more
  12. O-RING NSN 5331-01-455-7367 P/N MIL-R-7362 · 1557052-30 · SAE AMS-R-7362 · 1557052-30 · +1 more
  13. O-RING NSN 5331-01-453-1198 P/N H71435-7-5 · US71435 ITEM NO H71435-7-5 · US71435 ITEM NO H71435-7-5 · H45112-3-2462-F03 · +1 more
  14. O-RING NSN 5331-01-453-1184 P/N H4511213585F03 · US71435 ITEM NO H71435-6-5 · US71435 ITEM NO H71435-6-5 · H45112-1-3585-F03 · +1 more
  15. O-RING NSN 5331-01-452-2546 P/N AMS 7271/AS3578-906 · AS3578-906 · AMS 7271/AS3578-906 · SAE-AS3578 · +1 more
  16. O-RING NSN 5331-01-451-8572 P/N 908593 · NAS1611-266 · NAS1613 · NAS1611-266A · +1 more
  17. O-RING NSN 5331-01-451-8565 P/N 917706 · NAS1611-356A · NAS1613 · NAS1611-356 · +1 more
  18. O-RING NSN 5331-01-451-2172 P/N 593-6960300 PC 43 · AS568-321 · AS568A-321 · AS568A-321 · +1 more
  19. O-RING NSN 5331-01-450-2560 P/N 960155-0 · 960155-0 · 960155 · 960155-0 · +1 more
  20. O-RING NSN 5331-01-449-9362 P/N E3829 ITEM 15A · 74125-93 · B398240-74 · E3829 REV F 4IN ITEM NO 15A · +1 more
  21. O-RING NSN 5331-01-448-3916 P/N AS3578-048 · MS9021-048 · 5331014483916 · AS3578-048 · +1 more
  22. O-RING NSN 5331-01-448-0523 P/N NB39821474 · E3829 ITEM 22A · E3829 REV F 4IN ITEM NO 22A · 72277-93 · +1 more
  23. O-RING NSN 5331-01-447-9843 P/N S-12995 ITEM 21 · S-12995 ITEM 39 · 061.009.00 · S-12995 ITEM 64 · +1 more
  24. O-RING NSN 5331-01-447-8647 P/N W-249792 PIECE 66 · 187S64X4 · Y-187S64X3 · W-249792 PIECE 66 · +1 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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