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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 5331-01-257-9047 P/N 876100C1 · 876100C1 · 876100C1 · 876100C1 · +2 more
  2. O-RING NSN 5331-01-257-2213 P/N CV0424-036 · 01-449-0027-14 · 236-B46A · 2-236N1000-70 · +2 more
  3. O-RING NSN 5331-01-255-2708 P/N 11907 · 85786 · C-29893 PIECE 10 · LL-HX5-2191 · +2 more
  4. O-RING NSN 5331-01-255-1851 P/N 4410173-9080 · J201A8 · 280048-188 ITEM 70 · 4410173-9080CP · +2 more
  5. O-RING NSN 5331-01-255-1848 P/N 4400871-0120CP · J200AB12 · 4400871-0120 · 280048-188 ITEM 62 · +2 more
  6. O-RING NSN 5331-01-255-0146 P/N AS3581-447 · M83248/2-447 · MIL-R-83248/2 · AS3581-447 · +2 more
  7. O-RING NSN 5331-01-252-2413 P/N 4400871-1160 · 280048-188 ITEM 65 · J200AB116 · 280048-188 ITEM 65CP · +2 more
  8. O-RING NSN 5331-01-252-2412 P/N J200AB5 · 280048-188 ITEM 61 · 4400871-0050 · J200AB5CP · +2 more
  9. O-RING NSN 5331-01-251-6379 P/N MS28775-126 · AS28775-126 · MS28775-126 · AS28775-126 · +2 more
  10. O-RING NSN 5331-01-251-4738 P/N 820-5786961-6 · 2-141E540-80 · PO0319NRP · PO012514738 · +2 more
  11. O-RING NSN 5331-01-251-2938 P/N MS9386-155 · 5331PL0848121 · MS9386-155 · S8990-155 · +2 more
  12. O-RING NSN 5331-01-250-6307 P/N RA10110-89 · NE-11-8273 · 9169M40P110 · 5331PL0166449 · +2 more
  13. O-RING NSN 5331-01-250-5264 P/N NE-147-8273 · 9169M40P188 · 5331PL0166447 · 9169M40P188 · +2 more
  14. O-RING NSN 5331-01-248-9718 P/N 53-26021-Y04 · R62878B · R62878B · 34605519 · +2 more
  15. O-RING NSN 5331-01-247-8512 P/N 110-1508 · 2-916-710-603 · 1101508 · 111-8647 · +2 more
  16. O-RING NSN 5331-01-246-8620 P/N AS28778-10 · AN6290-10 · 5331PL1982903 · 5331PL1742672 · +2 more
  17. O-RING NSN 5331-01-245-1414 P/N 60275F01 · 60275F01 · 5-700 N525-60 · 60275F01VM · +2 more
  18. O-RING NSN 5331-01-244-2274 P/N AMS-R-25988/1 · MIL-DTL-25988/1 · MIL-R-25988/1 · M25988/1-040 · +2 more
  19. O-RING NSN 5331-01-243-9020 P/N MS29513-003 · 2661058B003 · MS29513-003 · MS29561-003 · +2 more
  20. O-RING NSN 5331-01-243-2897 P/N 34668962 · 34668962 · 039619-005-50 · HV-039619-005-50 · +2 more
  21. O-RING NSN 5331-01-240-6000 P/N 820-5786961-9 · N141022810 · 2-139E540-80 · PO12406000 · +2 more
  22. O-RING NSN 5331-01-239-7108 P/N 302006G1 · 9033B · 9033B · 90338 · +2 more
  23. O-RING NSN 5331-01-238-0318 P/N AS29513-171 · MS29513-171 · MS9021-171 · SAE-AS29513 · +2 more
  24. O-RING NSN 5331-01-237-7499 P/N GS570J2J220 · MIL-R-25988/3 · M25988/3-220 · MIL-DTL-25988/3 · +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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