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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 5331-00-847-3562 P/N PRP568-431-4067-70 · MS28775-431 · MIL-P-25732 · MS28784-431 · +5 more
  2. O-RING NSN 5331-00-844-0581 P/N PRP568-252-4024-65 · AS3578-252 · MS9021-252 · 13207E2880FN8 · +5 more
  3. O-RING NSN 5331-00-843-4608 P/N S8171AU24 · S8171AU24 · A-A-59588 CL 2B GR 50 · S8171AU24 · +5 more
  4. O-RING NSN 5331-00-843-2262 P/N 15892 · 2C2812 · 75-229-00 · 2-251N219-7 · +5 more
  5. O-RING NSN 5331-00-843-1719 P/N P49708-111 · P49708-111 · PLSE5200TM11PC6 · P49708111 · +5 more
  6. O-RING NSN 5331-00-840-6276 P/N 700561 · D38796-1-1-2INCH · MS29561-139 · MS29561-139 · +5 more
  7. O-RING NSN 5331-00-839-7119 P/N 69890-272 · PRP568-162-4024-25 · AS3578-162 · MS9021-162 · +5 more
  8. O-RING NSN 5331-00-835-5687 P/N PRP568-262-4024-65 · AS3578-262 · 715447-262 · MS9021-262 · +5 more
  9. O-RING NSN 5331-00-826-3751 P/N 005-1467 · PRP9023-4142-70 · MS29561-005 · MS29561-005 · +5 more
  10. O-RING NSN 5331-00-822-0081 P/N 912-2347 · PRP912-2347 · PRP568-912-3110-70 · B-12SR533-70 · +5 more
  11. O-RING NSN 5331-00-821-8331 P/N 914-5X9357 · ARP017-10V70-234 · MIL-G-22050GRADE1SIZEAS568-017 · MIL-DTL-22050 · +5 more
  12. O-RING NSN 5331-00-821-0664 P/N AS3578-233 · PRP568-233-4024-65 · AS3578-233 · MS9021-233 · +5 more
  13. O-RING NSN 5331-00-815-9169 P/N AS568-229/AMS3238 · B318-7-2-229 · 9021-229 · AS113-16-229 · +5 more
  14. O-RING NSN 5331-00-811-3692 P/N 1407-19 · 1407-0017 · 568-115 · AMS3228F · +5 more
  15. O-RING NSN 5331-00-810-8505 P/N AS3578-156 · AS3578-156 · PRP568-156-4024-25 · AS3578-156 · +5 more
  16. O-RING NSN 5331-00-810-7491 P/N 77440 · 58159 · 0550024020 · 53561C7 · +5 more
  17. O-RING NSN 5331-00-806-3246 P/N MS29561-242 · MS29561-242 · MS29561-242 · MS29561-242 · +5 more
  18. O-RING NSN 5331-00-804-2747 P/N MS9021-035 · PRP568-035-4024-65 · AS3578-035 · MS9021-035 · +5 more
  19. O-RING NSN 5331-00-801-8678 P/N PRP143-32142-70 · MS29561-132 · MS29561-132 · MS29561-132 · +5 more
  20. O-RING NSN 5331-00-777-3039 P/N S8990-551 · S8990-551 · S8990-551 · S8990-551 · +5 more
  21. O-RING NSN 5331-00-776-0580 P/N 10141 · CA030044 · 3906 · 25K30020 · +5 more
  22. O-RING NSN 5331-00-772-6568 P/N PRP914 1-2 · 004-7799 · PRP902 5-64 · 598-513-1894103PCLN15 · +5 more
  23. O-RING NSN 5331-00-763-0181 P/N 144-8307 · PLG32-2PC40 · A144SR310-70 · 4400172-1440 · +5 more
  24. O-RING NSN 5331-01-718-0922 P/N 2507294-33 · 2507294/ SHEET 2 FIND 33 · 2507294 · MIL-P-82745 · +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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