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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 5331-01-235-0137 P/N AS28775 · MIL-P-25732 · MS28775-320 · MS28775-320 · +5 more
  2. O-RING NSN 5331-01-234-4763 P/N 2-157-N506-65CP · AS3578-157CP · 10176990 · 2-157 N506-65 · +5 more
  3. O-RING NSN 5331-01-232-1484 P/N 408830212 · 803-4384536-3XX1-48 · AMS-P-83461/1 · M83461/1-022 · +5 more
  4. O-RING NSN 5331-01-231-0706 P/N A-A-59588 · AS568-904 · 5331PL2327330 · 1-501-3-904 · +5 more
  5. O-RING NSN 5331-01-228-0606 P/N 216-4384970, PC 62 · 216-4384970,PC62 · AS568A-239 · M83285-239 · +5 more
  6. O-RING NSN 5331-01-223-4425 P/N AMS7259 · AS3581-259 · MIL-R-83248/2-259 · M83248/2-259 · +5 more
  7. O-RING NSN 5331-01-222-3502 P/N AS3209-014 · 501-1793 PC. NO. 20 · M83248/1-014 · 5331PL2247940 · +5 more
  8. O-RING NSN 5331-01-221-4208 P/N AS3581-026 · AS3581-026CP · AMS7529 · M83248/2-026 · +5 more
  9. O-RING NSN 5331-01-090-4117 P/N 6961956 FIND 37 · AS3581-111CP · M83248-2-111 · M83248/2-111 · +5 more
  10. O-RING NSN 5331-01-084-7279 P/N AS9386-MS9386-221 · MS9386-221 · MS9386-221 · S0355 2-221 · +5 more
  11. O-RING NSN 5331-01-082-8730 P/N MS9386-006 · MS9386-006 · 5331PL0658329 · MS9386-006 · +5 more
  12. O-RING NSN 5331-01-082-6172 P/N 292900-100 REV A ITEM 11 · MILP25732 · AS568-160MILP25732 · AS568-160 · +5 more
  13. O-RING NSN 5331-01-079-7309 P/N S9412-553 · S9412-553 · M25988/2-903 · MIL-DTL-25988/2 · +5 more
  14. O-RING NSN 5331-01-077-5841 P/N ARP568-011MILP25732 · AS568-011MILP25732 · 4400173-0110 · 226624 ITEM 64 J200X11 · +5 more
  15. O-RING NSN 5331-01-076-5701 P/N NAS1593-212 · M83248/1-026 · M83248/1-026 · S9413-026 · +5 more
  16. O-RING NSN 5331-01-070-9656 P/N PRP568-177-4067-70 · AS28775 MS28775-177 · MS28775-177 · MIL-P-25732C · +5 more
  17. O-RING NSN 5331-01-070-9654 P/N PRP68-173-4067-70 · AS28775-173 · MS28775-173 · MIL-P-25732C · +5 more
  18. O-RING NSN 5331-01-067-9693 P/N 026-7399 · AS568-026MIL-P-5 · 695-00026 · 026-19359 · +5 more
  19. O-RING NSN 5331-01-066-4909 P/N 429-8307 · AS568-429-8307 · AS568-429AMS3215 · 2077100 · +5 more
  20. O-RING NSN 5331-01-065-5954 P/N OR51 · 332 ITEM 2 · AS568-439/MIL-G-21569 CL 1 · 5331PL1247877 · +5 more
  21. O-RING NSN 5331-01-063-7109 P/N A6689.902.303 · 8000-30CP · 06689,902,303 · 06689902303 · +5 more
  22. O-RING NSN 5331-01-061-4914 P/N 346676-1 · AS568B-032 · ASTM-D2000 · 2BE615A14B14E1434F17 · +5 more
  23. O-RING NSN 5331-01-048-4995 P/N AS3085-118 · 2-118 V747-75 · N4207 · 2-118V747-75 · +5 more
  24. O-RING NSN 5331-01-046-8008 P/N K70-0067 · 2-274C147-70 · AS568-274 · AMS3209L · +5 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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