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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 5331-01-501-4296 P/N ST1946-154 · ST1946-154 · ST1946-154 · ST1946-154 · +2 more
  2. O-RING NSN 5331-01-501-3073 P/N ST1946-048 · ST1946-048 · ST1946-048 · ST1946-048 · +2 more
  3. O-RING NSN 5331-01-498-8922 P/N 342-7067318-1 · M83485-345 · M83485-345 · H643-6503-1 · +2 more
  4. O-RING NSN 5331-01-497-4130 P/N AS3208-08 · AS3208-08 · AS3208-08 · NMM220348 REV A ITEM NO. 12 · +2 more
  5. O-RING NSN 5331-01-497-4127 P/N AS3208-06 · 23087038 FIND NO 2 · 5331PL1868032 · AS3208-06 · +2 more
  6. O-RING NSN 5331-01-497-0980 P/N J515CH221X0163H · J515CH221X0163 · SAE-J515 · J515CH221X0163H · +2 more
  7. O-RING NSN 5331-01-497-0563 P/N AS28775 · MS28775-103 · MS28775-103 · AS28775 · +2 more
  8. O-RING NSN 5331-01-496-3618 P/N H47667-2-1658-F03 · H72272-01-2-2 · H72272-01-2-2 · H72272-01-3-2 · +2 more
  9. O-RING NSN 5331-01-495-5161 P/N 29.2X3SMS1586 · 21522118-408 · 29.2X3SMS1586 · 29.2X3SMS1586 · +2 more
  10. O-RING NSN 5331-01-495-0373 P/N XM123-910-5 · B8743 REV I · M83248/1-910 · M83248/1-910CP · +2 more
  11. O-RING NSN 5331-01-494-9077 P/N M25988/3-106 · MIL-DTL-25988/3 · MIL-R-25988 · 2-106 L946-60 · +2 more
  12. O-RING NSN 5331-01-494-8098 P/N 00270-025 F70 · LRC63047-9 · 7M80-9 · ST7M251-9 · +2 more
  13. O-RING NSN 5331-01-494-8086 P/N LRC63047-7 · 7M80-7 · ST7M251-7 · 1966-015A · +2 more
  14. O-RING NSN 5331-01-494-7451 P/N 00146-025-F70 · 7M80-5 · 1966-014 · ST7M251-5 · +2 more
  15. O-RING NSN 5331-01-494-4282 P/N 16KP203 · 16KP203 · 16KP203 · 0739449 · +2 more
  16. O-RING NSN 5331-01-492-8724 P/N 2152 2115-408 T AKR 286 · 2152 2115-408 · 21522115-408 · 21522115-408 · +2 more
  17. O-RING NSN 5331-01-490-6342 P/N MS28778 · 5330PL0577375 · MS28778-25 · SAE-AS28778 · +2 more
  18. O-RING NSN 5331-01-490-2438 P/N M053225163 · 25163 · M053225163 · 25163 · +2 more
  19. O-RING NSN 5331-01-490-0784 P/N MS9386-217 · MS9386-217 · 2-217 S355-70 · S355-70 2-215 · +2 more
  20. O-RING NSN 5331-01-487-8548 P/N AS3581-347 · M83248/2-347 · 9215-4005 ITEM 2 · 4152-9347 · +2 more
  21. O-RING NSN 5331-01-487-3039 P/N 3337810-23 · M83248/2-464 · MIL-R-83248/2 · M83248/2-464 · +2 more
  22. O-RING NSN 5331-01-485-6462 P/N ST1946-218 · ST1946-218 · ST1946-218 · ST1946-218 · +2 more
  23. O-RING NSN 5331-01-485-6437 P/N V115 · ST1946-149 · M83485/1-149 · M83485/1-149 · +2 more
  24. O-RING NSN 5331-01-485-6422 P/N ST1946-235 · M83485/1-235 · M83485/1-235 · 5331PL2028415 · +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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