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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 5331-01-578-3932 P/N 803-2177934-X3XX-45MOD · M22050-1-022 · ASE568-022 · MIL-G-22050CL1 · +3 more
  2. O-RING NSN 5331-01-571-8565 P/N B9549 ITEM 1 OXYGEN CLEAN · 123-031-5 OXYGEN CLEAN · 123-031-5 OXYGEN CLEAN CP · 123-031-5 OXYGEN CLEAN CP · +3 more
  3. O-RING NSN 5331-01-569-8722 P/N 90001-451 · 01340435 · M1538372131 · 0134 0435 · +3 more
  4. O-RING NSN 5331-01-569-0103 P/N AN6230-41 · AS28775-041 · MS28775-041 · AS28775-041 · +3 more
  5. O-RING NSN 5331-01-567-2856 P/N 30-1605 · 19745APC20 · 19745BPC20 · 19746BPC43 · +3 more
  6. O-RING NSN 5331-01-564-2794 P/N HK300X0436H · J515HK300X0436H · J515 · HK300X0436H · +3 more
  7. O-RING NSN 5331-01-564-2455 P/N SH-5529 80/50-0900 POS 41 · 912403 · 2-306539 POS 41 · 2-306539 POS 41 · +3 more
  8. O-RING NSN 5331-01-563-5629 P/N 124683 · 6010000111 · 92270551 · 2 0176-164 · +3 more
  9. O-RING NSN 5331-01-562-1661 P/N 14KP268 · 14KP268 · 50027909 · 238-5081 · +3 more
  10. O-RING NSN 5331-01-559-2098 P/N M83248/1-553 · V3D10334 ITEM 029 · AC180-553 · MS83248/1-553CP · +3 more
  11. O-RING NSN 5331-01-558-8462 P/N 124214 · 92278441 · 1372639 · 70-05-687 · +3 more
  12. O-RING NSN 5331-01-548-8305 P/N 123-905-5 · D3264 PC 20.53 · D3261 PC 31 · N1000 3-905 · +3 more
  13. O-RING NSN 5331-01-543-1329 P/N NAS1613 · NAS1611 · NAS1611-014 · NAS1611-014A · +3 more
  14. O-RING NSN 5331-01-542-0674 P/N AS29513 · MS29513-15 · AS29513-157 · AS29513-157 · +3 more
  15. O-RING NSN 5331-01-541-1881 P/N 6393516 FIND 146 · 6392604-01 FIND 032 · M83248/1-227 · M83248/1-227D4 · +3 more
  16. O-RING NSN 5331-01-541-1857 P/N 6393516 FIND 68 · 6392604-01 FIND 012 · M83248/1-275 · M83248/1-275D4 · +3 more
  17. O-RING NSN 5331-01-541-1842 P/N 5793249 FIND 66 · 6392668 FIND 20 · 5793250 FIND 148 · 5793273 FIND 35 · +3 more
  18. O-RING NSN 5331-01-540-2397 P/N 90001-470 · 0121 0161 · 0121 0161 · 01210161 · +3 more
  19. O-RING NSN 5331-01-537-0498 P/N LFEPEQ16B-006 · 974957 · L3AS-568A-018S70 · LFEWTM-016 · +3 more
  20. O-RING NSN 5331-01-533-6603 P/N 216-7015787ITEMF-412 · AMS-R-83285GR80/AS568-220 · AS568-220 · AMS-R-83285GR80 · +3 more
  21. O-RING NSN 5331-01-533-1185 P/N 14153 RE015331185 · AS3209-106 · 818548-123 · 818548-123 · +3 more
  22. O-RING NSN 5331-01-532-9235 P/N 2173533/0 · 2173533/0 · 2173533/0 · 2173533/0 · +3 more
  23. O-RING NSN 5331-01-532-9193 P/N 2179099/0 · 2179099/0 · 10337571 · 2179099/0 · +3 more
  24. O-RING NSN 5331-01-530-5795 P/N M1538876110 · 02/911615 · 02/911615 · 0742847 · +3 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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