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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 5331-00-579-6861 P/N 7377-236 · 202994PC10ASSYG · MS28775-236 · 2HG390 · +73 more
  2. O-RING NSN 5331-00-020-0105 P/N AS568-908 · 8539058 · 908-19357 · PRP3-908-19357 · +72 more
  3. O-RING NSN 5331-00-194-3729 P/N 546812 · W5A8058REVAPC82 · NC3024PC9 · NC3020PC9 · +71 more
  4. O-RING NSN 5331-00-641-4350 P/N 546811 · DM6783PC49 · B4-308 · DM6662ALTXPC49 · +70 more
  5. O-RING NSN 5331-00-618-5361 P/N MS28775-015 · 101015 · 083119100 · PRP015-7377 · +69 more
  6. O-RING NSN 5331-00-579-3156 P/N R72328 · 18458P11 · 7377-116 · 9891072 · +69 more
  7. O-RING NSN 5331-00-166-1066 P/N 255751PC52 · 255773PC52 · 255753PC52 · 255773PC100 · +69 more
  8. O-RING NSN 5331-00-166-0992 P/N AS568A-016 · 3018258 · 2852-2001-11-05 · PRP016-19357 · +69 more
  9. O-RING NSN 5331-00-165-4565 P/N 10011119 · 10004299 · AS568-916 · PRP3-916-19357 · +69 more
  10. O-RING NSN 5331-00-803-7208 P/N PRP902-2 · 902-7399 · 7799-2 · MS28778-2 · +68 more
  11. O-RING NSN 5331-00-166-1076 P/N M83248/1-120 · 040-1200-09-0 · 39812074 · 2-120V747-75 · +68 more
  12. O-RING NSN 5331-00-166-1063 P/N 95021739 · A-365-315 ITEM NO 12 · 845-7286652 ITEM 32 · 22114-2 · +67 more
  13. O-RING NSN 5331-00-166-0967 P/N 1970 002 ITEM 21 · 58A164C826-1 · 862623 ITEM 12 · 9899-100 PC234 · +67 more
  14. O-RING NSN 5331-00-248-3833 P/N AS29513-8 · 7866-008 · 60-P-31-008 · 903087 · +66 more
  15. O-RING NSN 5331-00-194-1675 P/N AS3209-222 · 1000-002PC222 · PRP222-19357 · 222-19357 · +66 more
  16. O-RING NSN 5331-00-166-8403 P/N 212-19357 · HAL-20-MIL-1000-80-PC05 · CC-10709 · 122-2422387 PEICE 392 · +66 more
  17. O-RING NSN 5331-00-165-1981 P/N AS3581-906 · 4000-06 · PRP906-19359 · 906-19359 · +66 more
  18. O-RING NSN 5331-00-804-5694 P/N AS28778-16 · MS28778-16 · 7799-16 · 1000-004PC16 · +64 more
  19. O-RING NSN 5331-00-248-3836 P/N 012-7866 · GS570EM012 · 7866-012 · 7941379-001 · +64 more
  20. O-RING NSN 5331-00-641-3407 P/N 84110 · 546860 · 7377-224 · MS28775-224 · +62 more
  21. O-RING NSN 5331-00-196-5381 P/N MT51102C501213 · NHPB11199-3WPC57-2IN · CD190PC57 · 5M20A · +62 more
  22. O-RING NSN 5331-00-166-8405 P/N AS3209-218 · PRP218 V747-75 · 218-19357 · 26472-21PC6 · +62 more
  23. O-RING NSN 5331-00-684-3419 P/N 7377-016 · 016-4087 · EO-8 · MS28775-016 · +61 more
  24. O-RING NSN 5331-00-196-5385 P/N 7375098 · 5664759 · PRP902-23 · 121781 · +61 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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