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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 5331-00-803-9886 P/N MS29561-215 · MS29561-215 · 19-000-0708 · MS29561-215 · +3 more
  2. O-RING NSN 5331-00-803-7206 P/N PRP568-244-4024-65 · AS3578-244 · MS9021-244 · 1854792-6 · +3 more
  3. O-RING NSN 5331-00-800-6869 P/N PRP914-44142-70 · MS29561-144 · MS29561-144 · MS29561-144 · +3 more
  4. O-RING NSN 5331-00-800-6351 P/N MS29561-131 · MS29561-131 · STD3019C131 · 2-131 470-071 · +3 more
  5. O-RING NSN 5331-00-781-7432 P/N PRP568-050-4024-65 · AS3578-050 · MS9021-050 · 2-050 N506-65 · +3 more
  6. O-RING NSN 5331-00-769-6113 P/N 6726004 · 6726004 · AS3551-906 · AS3551-06 · +3 more
  7. O-RING NSN 5331-00-763-0075 P/N MILR25988 · M25988/1-117 · MIL-DTL-25988/1 · 5331PL1695375 · +3 more
  8. O-RING NSN 5331-01-721-2723 P/N 8758871 / FIND 38 · 8758871 · 8758871-38 · 8758871 / FIND 38VS · +3 more
  9. O-RING NSN 5331-01-720-7923 P/N 8758871 · 8758871 / FIND 15 · 8758871-15 · 8758871 / FIND 15VS · +3 more
  10. O-RING NSN 5331-01-720-7884 P/N 8758871 / FIND 78 · 8758871 · 8758871-78 · 8758871 / FIND 78VS · +3 more
  11. O-RING NSN 5331-01-720-7312 P/N 8758871 · 8758871 / FIND 16 · 8758871-16 · AS3581-215VS · +3 more
  12. O-RING NSN 5331-01-719-0226 P/N 8635040 · 8635040-6 · 8635040-6 · 3-904 FKM · +3 more
  13. O-RING NSN 5331-01-718-3998 P/N 726-8835706-288 · 8835706 · R6961602-70 · LSA004586-288 · +3 more
  14. O-RING NSN 5331-01-715-9810 P/N 2507294-108 · 2507294-108 · N0674 M21569-164 · N0674 M82745-164 · +3 more
  15. O-RING NSN 5331-01-714-4534 P/N 2507294 · 2507294-92 · N0674 M21569-165 · N0674 M82745-165 · +3 more
  16. O-RING NSN 5331-01-714-3665 P/N 2507294-132 · 2507294-132 · N0674 M82745-137 · 2507294-132 · +3 more
  17. O-RING NSN 5331-01-714-3419 P/N 2507294-107 · 2507294-107 · 2507294-107 · N0674 M21569-046 · +3 more
  18. O-RING NSN 5331-01-714-3405 P/N 2507294-126 · 2507294-126 · N0674 M21569-040 · 2507294-126 · +3 more
  19. O-RING NSN 5331-01-714-3118 P/N 721-8541917-39 · 8541917 · M83248/2-459 · 54-67-3459 · +3 more
  20. O-RING NSN 5331-01-714-2918 P/N 2507294 · 2507294-130 · 2507294/ SHEET 2 FIND 130 · 2507294-130 · +3 more
  21. O-RING NSN 5331-01-714-2437 P/N 2507294 · 2507294/ SHEET 2 FIND 122 · 2507294-122 · 2507294-122 · +3 more
  22. O-RING NSN 5331-01-699-3928 P/N 515-8543196-PN-150 · M2AA810A13EA14F17 · AS658-214 · 218116030 · +3 more
  23. O-RING NSN 5331-01-684-5872 P/N 810-115 · 6914580/SHEET 5FIND 19 · 810-115 · 810-115 · +3 more
  24. O-RING NSN 5331-01-668-0479 P/N NAS1611-229A · NAS1611-229A · NAS1613 · NAS1611-229A · +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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