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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 5331-00-882-9174 P/N 385958 · MS9388-114 · MS9388-114 · MS9388-114 · +1 more
  2. O-RING NSN 5331-00-882-9170 P/N 387388 · 5331PL0140371 · MS9388-030 · 387388 · +1 more
  3. O-RING NSN 5331-00-882-9105 P/N 6843332-06 · 6843332-06 · 408477 · MS9387-06 · +1 more
  4. O-RING NSN 5331-00-882-9035 P/N 342433 · MS9388-113 · Z00.N7425068113 · MS9388-113 · +1 more
  5. O-RING NSN 5331-00-882-8056 P/N AS3551-162 · MS9241-162 · SAE-AS3551 · AMS7272G · +1 more
  6. O-RING NSN 5331-00-882-8045 P/N AS3551-129 · 5331PL0908807 · MS9241-129 · SAE-AS3551 · +1 more
  7. O-RING NSN 5331-00-882-1677 P/N 399391 · 5330PL1032365 · MS9388-154 · MS9388-154 · +1 more
  8. O-RING NSN 5331-00-882-0656 P/N 228303BA5 · W136824 · 227L-145 · 428 · +1 more
  9. O-RING NSN 5331-00-881-0296 P/N TD102475-01 · 201414004 · TD102475-01 · TD102475-01 · +1 more
  10. O-RING NSN 5331-00-879-6650 P/N 013-3128 · RB7974-27 · RS26110-01329 · 2-013E515-8 · +1 more
  11. O-RING NSN 5331-00-878-6485 P/N 6B240542 · 745-240542 · F745240542 · 240542 · +1 more
  12. O-RING NSN 5331-00-878-2407 P/N 031-11307 · K5785-0031 · K5785-0031 · 5785-0031 · +1 more
  13. O-RING NSN 5331-00-878-0520 P/N D1105-186 · ASTM D2000 · AS568-163 · A63097 · +1 more
  14. O-RING NSN 5331-00-869-1776 P/N 59C22184 · 59C22184 · 59C22184 · 70328-01 · +1 more
  15. O-RING NSN 5331-00-865-9992 P/N S8171AV36 · S8171AV36 · S8171AV36 · 5331PL1013241 · +1 more
  16. O-RING NSN 5331-00-865-9322 P/N 493615 · 493615 · 493615 · 493615 · +1 more
  17. O-RING NSN 5331-00-865-8875 P/N PRP346-11505 · 346-11505 · MS90064-17 · 2-346 S899-50 · +1 more
  18. O-RING NSN 5331-00-864-7177 P/N 376466 · MS9388-222 · MS9388-222 · 3006085 · +1 more
  19. O-RING NSN 5331-00-863-4110 P/N 8634110 · CRI-15 · CRI-15 · CR1-15 · +1 more
  20. O-RING NSN 5331-00-857-6664 P/N AS3551-210 · MS9241-210 · MS9241-210 · AS3551-210 · +1 more
  21. O-RING NSN 5331-00-853-5631 P/N 579310 · 579310 · 579310 · 579310 · +1 more
  22. O-RING NSN 5331-00-853-4276 P/N A72573-200PC6 · 104030700 · S1400-66 · 303169 · +1 more
  23. O-RING NSN 5331-00-853-2237 P/N A512-7 · 2930-70 · A1716 · 5330008532237 · +1 more
  24. O-RING NSN 5331-00-851-0242 P/N NAS1611-015 · NAS1601-015 · NAS1613 · 8D173 ITEM 16 · +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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