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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 5331-00-197-9612 P/N 1866-42 · HN39PC39 · 9118412 · 12M72D · +32 more
  2. O-RING NSN 5331-00-167-5116 P/N 1697883 REV A PART NO 89C · 099924 · 0712V-2 · D35C2500003 ITEM 58 · +32 more
  3. O-RING NSN 5331-00-166-8397 P/N M83248/1-038 · 845-1889568 ASS · ST1050-038 · 649-393-038-0 · +32 more
  4. O-RING NSN 5331-00-165-1951 P/N LL703PC11 · 21333 FIND 30 · AS3085-214 · AMS7276 · +32 more
  5. O-RING NSN 5331-00-068-9528 P/N 904-7377AN · 1KK528 · PL-999F0561PC33 · 1KK528 · +32 more
  6. O-RING NSN 5331-01-097-6619 P/N 803-1385721-4-4 · 803-1385714-4-4 · AMS-P-83461/1 · M83461/125 · +31 more
  7. O-RING NSN 5331-01-046-0627 P/N 3-906S604-70 · 07A568-906N · PRP906-7757 · 906-7757 · +31 more
  8. O-RING NSN 5331-00-691-0145 P/N AS28775-022 · 7377-22 · 7377-022 · MS28775-022 · +31 more
  9. O-RING NSN 5331-00-631-1342 P/N 026-7377 · 026-737-70 · 2-026 · MS28775-026 · +31 more
  10. O-RING NSN 5331-00-580-4394 P/N 7377-129 · 914-29 · MS28775-129 · P48026-129 · +31 more
  11. O-RING NSN 5331-00-579-1021 P/N 7866-123 · 60-P-31-123 · 124-7386971 PC 5 · 803-6397262-7 · +31 more
  12. O-RING NSN 5331-00-527-8522 P/N 7866-145 · 60-P-31-145 · 903057 · 3012 · +31 more
  13. O-RING NSN 5331-00-451-0118 P/N 101A714U01 · 5740012 · 1979-01 · 1CL41 · +31 more
  14. O-RING NSN 5331-00-285-6869 P/N NX14334PC8 · N38040PC8 · N21704PC8 · N29743PC15 · +31 more
  15. O-RING NSN 5331-00-263-8032 P/N MS29512-10/3-910 · MS29512-10 · 7866-10 · 010-7866 · +31 more
  16. O-RING NSN 5331-00-251-9374 P/N 7866-342 · 2-342 · GS570EM342 · 60-P-31-342 · +31 more
  17. O-RING NSN 5331-00-251-9367 P/N 251847866-234 · 7866-234 · PX1775-234 · 10V60-141-234 · +31 more
  18. O-RING NSN 5331-00-250-0231 P/N GS570EM120 · 7866-120 · R1307P120 · 60-P-31-120 · +31 more
  19. O-RING NSN 5331-00-250-0221 P/N 7866-210 · 210-7866 · 210-7399 · 902-15-7399 · +31 more
  20. O-RING NSN 5331-00-248-3832 P/N MS29513-007 · AS29513-007 · 7866-007 · R130P007 · +31 more
  21. O-RING NSN 5331-00-167-5114 P/N DD-4525 ITEM NO 15 · DD-4729 ITEM NO 15 · 649-393-126-0 · 21535 FIND 60 · +31 more
  22. O-RING NSN 5331-00-165-1937 P/N AS3209-161 · 363628 · 1801490 ITEM NO. 72 · DD-4920 REF NO 16 · +31 more
  23. O-RING NSN 5331-00-054-6865 P/N 546865 · 4139 · 61957-6230-7 · 220984 · +31 more
  24. O-RING NSN 5331-01-123-3298 P/N 026-7757 · 500771 · PRP026-7757 · MS28784-26 · +30 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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