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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 5331-01-312-3748 P/N 25904172.602 · 25904172.602 · 25904172-602 · 91536-991 · +1 more
  2. O-RING NSN 5331-01-312-3747 P/N F3850-013087 · 25904172-603 · 91537-991 · 2590 4172-603 · +1 more
  3. O-RING NSN 5331-01-312-0620 P/N 151F-5-9 6IN · 7794 ITEM 9 6IN · 2567 3/4IN · 2567 ITEM 16 · +1 more
  4. O-RING NSN 5331-01-311-4628 P/N MS28775-12 · MS28775-12 · 73-103-43 · MS28775-12 · +1 more
  5. O-RING NSN 5331-01-311-2670 P/N 5F-3999 · 449-7303 · 5F-3999 · 5F3999 · +1 more
  6. O-RING NSN 5331-01-310-9300 P/N 179442 · 190580 · AS568A-015 · 10333885 · +1 more
  7. O-RING NSN 5331-01-310-8448 P/N T77858 · T77858 · T77858 · T77858 · +1 more
  8. O-RING NSN 5331-01-310-4604 P/N AS3581-174 · MIL-R-25988 · M25988/1-174 · SAE-AS3581 · +1 more
  9. O-RING NSN 5331-01-310-3332 P/N 58K016 · 58K016 · 58K16 · 58K016 · +1 more
  10. O-RING NSN 5331-01-309-9373 P/N B12E-0200-15 · B122E-0200-15 · D44635PC20-F98518 · D44635PC20-F98518 · +1 more
  11. O-RING NSN 5331-01-309-7361 P/N 6196157 · 6196157 · 2-117 C356-45 · C0356 2-117 · +1 more
  12. O-RING NSN 5331-01-308-8211 P/N MS9386-279 · MS9386-279 · S8990-279 · SAE-AS9386 · +1 more
  13. O-RING NSN 5331-01-308-4827 P/N NAS1613 · NAS1611-207 · A06653 · E0515 2-207 · +1 more
  14. O-RING NSN 5331-01-308-4272 P/N 1JA3368K06 · 1JA3368K06 · 1JA3368K06 · 1JA3368K06 · +1 more
  15. O-RING NSN 5331-01-308-3247 P/N 23031655 63005 · 23031655 · AAG 17528 · 23031655 · +1 more
  16. O-RING NSN 5331-01-307-9411 P/N R75892 · R75892 · R75892 · R75892 · +1 more
  17. O-RING NSN 5331-01-307-5050 P/N AS29513-360 · MS29513-360 · AS29513-360 · SAE-AS29513 · +1 more
  18. O-RING NSN 5331-01-306-9604 P/N MS28778-08 · 19A11-X-08 · PL-10022-F-18ITEM456C · MS28778-08 · +1 more
  19. O-RING NSN 5331-01-306-6582 P/N 0089975948 · 0089975948 · 4538741-217 · 4538741-217 · +1 more
  20. O-RING NSN 5331-01-305-2599 P/N AS3581-274 · M25988/1-274 · MIL-R-25988/1 · AS3581-274 · +1 more
  21. O-RING NSN 5331-01-305-0238 P/N AS3581-272 · MIL-R-83248 TY 1 CL 2 · M83248/2-272 · SAE-AS3581 · +1 more
  22. O-RING NSN 5331-01-304-9500 P/N AS3581-455 · MIL-R-83248 TY 1 CL 2 · M83248/2-455 · SAE-AS3581 · +1 more
  23. O-RING NSN 5331-01-304-9274 P/N 811201502 · 81.12.015.02 · JRC 1460 · DIS 1932/H11 ITEM 221-8 · +1 more
  24. O-RING NSN 5331-01-304-8491 P/N ON65218.35.68 · 65218.35.68 · ON65218.35.68 · 0N65218.35.68 · +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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