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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 5331-01-172-4646 P/N 0029975748 · 4536226-630 · 0029975748 · 4536226-630 · +2 more
  2. O-RING NSN 5331-01-171-6057 P/N AS3581-332 · MIL-R-83248/2 · M83248/2-332 · MS9970-332 · +2 more
  3. O-RING NSN 5331-01-171-4825 P/N C9A013 · 2-008 · 1N141200011 · 2-008 · +2 more
  4. O-RING NSN 5331-01-171-4821 P/N 17KP932 · 17KP932 · ASC1464863 · 12704114-14 · +2 more
  5. O-RING NSN 5331-01-171-0604 P/N MS9385-14 · 5331PL1757092 · MS9385-14 · MS9386-914 · +2 more
  6. O-RING NSN 5331-01-170-9006 P/N 23273 · 723019256800 · 2-024 · B0612 2-024 · +2 more
  7. O-RING NSN 5331-01-170-6284 P/N PRP259-3238 · 259-3238 · 21 041-075 · 2-259E515-8 · +2 more
  8. O-RING NSN 5331-01-170-5838 P/N AS29513-372 · MS29513-372 · 2-372 · AS29513-372 · +2 more
  9. O-RING NSN 5331-01-169-4573 P/N 510-483 · 18-85 · P2076-DG-071 ITEM 1 · DE043 · +2 more
  10. O-RING NSN 5331-01-169-2099 P/N MS28775-437 · MS28775-437 · 1083H35 PC2 · 1084H75 PIECE 43 · +2 more
  11. O-RING NSN 5331-01-169-0656 P/N GS570J2J150 · M25988/3-150 · MIL-DTL-25988/3 · MIL-R-25988/3 · +2 more
  12. O-RING NSN 5331-01-168-9917 P/N ORH-131 · 10510873 · ORH131 · ORH131 · +2 more
  13. O-RING NSN 5331-01-168-6385 P/N 207-1862800SH2PC24 · 1862800SH2PC 24 · 71866 PC 32 · 71869PC32 · +2 more
  14. O-RING NSN 5331-01-168-6366 P/N MS28775-384 · MS28775-384 · 2-384N304-75 · MS28775-384 · +2 more
  15. O-RING NSN 5331-01-168-4201 P/N 4537800-727 · 0049975348 · 0049975348 · 4537800-727 · +2 more
  16. O-RING NSN 5331-01-167-9770 P/N AS3581-237 · MIL-R-83248/2 · M83248/2-237 · 4400596-2370 · +2 more
  17. O-RING NSN 5331-01-167-7671 P/N MS28775-281 · MS28775-281 · BUWEPSDWG253340 5-281 · 2-281N304-75 · +2 more
  18. O-RING NSN 5331-01-166-5939 P/N 0039975848 · 0039975848 · 4537800-652 · 4537800-652 · +2 more
  19. O-RING NSN 5331-01-166-5299 P/N MS29561-033 · 2-033-47-071 · MS29561-033 · 2-033-47-071 · +2 more
  20. O-RING NSN 5331-01-164-5829 P/N PRP114-8307 · PRP114-7507 · 10502141 · NA151 2-114 · +2 more
  21. O-RING NSN 5331-01-160-2087 P/N MS28775-142 · MS28775-142 · 230079072 · 230079072 · +2 more
  22. O-RING NSN 5331-01-160-2086 P/N MS28775-131 · 5330PL0888433 · MS28775-131 · 230079061 · +2 more
  23. O-RING NSN 5331-01-159-2801 P/N MS29513-370 · MS29513-370 · 2-370N506-65 · 2-370N602-70 · +2 more
  24. O-RING NSN 5331-01-158-2064 P/N AS568-050MILP25732 · AS568B-050 · 1JA3368J76 · P56408 · +2 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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