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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 5331-01-344-8264 P/N MIL-R-25988/1 · M25988/1-003 · MIL-DTL-25988/1 · 10163440 · +2 more
  2. O-RING NSN 5331-01-343-4234 P/N 22-69058 ITEM 9 · 21-10926 ITEM27 · SOR14 · SOR14 · +2 more
  3. O-RING NSN 5331-01-342-1653 P/N NAS1601-119 · NAS1611-119 · NAS1611-119CP · 63750-2 ITEM 23 · +2 more
  4. O-RING NSN 5331-01-341-9362 P/N OBP-28-90 · OBP-28-90 · OBP-18-90 · OBP-9-90 · +2 more
  5. O-RING NSN 5331-01-340-2192 P/N M83461/1-015 · 845-6603285ITEM6 · M83461/1-015 · M83461/1-015 · +2 more
  6. O-RING NSN 5331-01-335-8878 P/N 12342633 · 5935457 · 90046 · 185039 · +2 more
  7. O-RING NSN 5331-01-335-6920 P/N 4W-9033 · HZTL416273 · HZTL414040P5 · 4W-9033 · +2 more
  8. O-RING NSN 5331-01-335-5933 P/N MS9386-206 · MS9386-206 · MS9386-206 · 2-206S355-75 · +2 more
  9. O-RING NSN 5331-01-335-0042 P/N 5P-7813 · 10300087 · 5P-7813 · 1W2548 ITEM 12 · +2 more
  10. O-RING NSN 5331-01-334-8574 P/N 6V-5063 · 7HA850 · 7HA850 · 6V-5063 · +2 more
  11. O-RING NSN 5331-01-334-7944 P/N MIL-P-83248/2-031 · MIL-R-83248/2 · M83248/2-031 · MIL-P-83248/2-031CP · +2 more
  12. O-RING NSN 5331-01-331-9713 P/N 331-900-064 · 6318031 · 10029646 · 331.900.064 · +2 more
  13. O-RING NSN 5331-01-330-5914 P/N AS29513-232 · 5331PL1332125 · MS29513-232 · MS29513-232 · +2 more
  14. O-RING NSN 5331-01-330-5280 P/N A53581-170 · M83248/2-170 · MIL-R-83248/2 · SAE-AS3581 · +2 more
  15. O-RING NSN 5331-01-326-9514 P/N 5678014 PIECE 41 · 1306779 · 5684202 PIECE 41 · 5678014 PIECE 41 · +2 more
  16. O-RING NSN 5331-01-326-9280 P/N AMS-P-83461/1 · M83461/1-460 · MIL-P-83461/1 · M83461/1-460 · +2 more
  17. O-RING NSN 5331-01-326-3485 P/N NAS1601 · NAS1601-215 · NAS1601-215CP · NAS1611-215 · +2 more
  18. O-RING NSN 5331-01-325-6040 P/N S9412-036 · S9412-036 · MIL-DTL-25988/2 · MIL-R-25988/2 · +2 more
  19. O-RING NSN 5331-01-324-8866 P/N PL999F0742 PIECE 49 · M83248/2-368 · MIL-R-83248/2 · MIL-R-83248 · +2 more
  20. O-RING NSN 5331-01-324-4829 P/N H42930-78-3921-F14 · 3921-280 · H72346-3-2 · US-71407 ITEM 38 · +2 more
  21. O-RING NSN 5331-01-324-0916 P/N 16110167 · 16303325 B/M ITEM 016 · 16303325 PIECE 16 · 16303325 PIECE 16 · +2 more
  22. O-RING NSN 5331-01-322-6921 P/N 10256 · 701197 · 708536 BE · RM-0545-30 · +2 more
  23. O-RING NSN 5331-01-322-1150 P/N M83485/1-275 · MIL-R-83485/1-275 · M83485/1-275 · M83485/1-275 · +2 more
  24. O-RING NSN 5331-01-321-7708 P/N STSV465A016 · STSV465A016 · SV799335 FIND 43 · STSV465A016 · +2 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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