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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 5331-01-387-1227 P/N 9443135AB-127 · 9443135AB-127 · 2-438N0304-75 · 2-438NM756-75 · +4 more
  2. O-RING NSN 5331-01-232-1483 P/N S8990-571 · S8990-571 · S8990-571 · S8990-571 · +4 more
  3. O-RING NSN 5331-01-232-1473 P/N 5A (TEFLON) · X5008/12/143/14 · 143/14 · X5008/12/143 ITEM 14 · +4 more
  4. O-RING NSN 5331-01-231-5216 P/N MIL-P-25732 · AS28775 · MS28775-321 · MS28775-321 · +4 more
  5. O-RING NSN 5331-01-231-0703 P/N MS28775-213 · 5331PL0809688 · MS28775-213 · C-8925 PIECE 13 · +4 more
  6. O-RING NSN 5331-01-231-0695 P/N AMS7270 · AS3569-006 · PL-52601 PIECE 8 · 568006-2 · +4 more
  7. O-RING NSN 5331-01-229-0108 P/N MIL-P-25732 · ARP568-371MILP5516CLB · MS28775-371 · AS28775 · +4 more
  8. O-RING NSN 5331-01-228-6163 P/N 327270 · 329716 · 327270 · 329716 · +4 more
  9. O-RING NSN 5331-01-227-9116 P/N 845-1889668 PC25 · 200-2159562PC12 · 200-2439190PC10 · 200-2119563 PC.20 · +4 more
  10. O-RING NSN 5331-01-227-4868 P/N MIL-P-25732 · MS28775-311 · AS28775 · MS28775-311 · +4 more
  11. O-RING NSN 5331-01-226-8750 P/N MIL-P-25732 · AS28775 · MS28775-203 · MS28775-203 · +4 more
  12. O-RING NSN 5331-01-222-3501 P/N D08547-203ITEM49 · AMS-P-83248/1 · AMS-R-83248/1-012 · MIL-R-83248/1 · +4 more
  13. O-RING NSN 5331-01-090-2338 P/N 1JA3368J41 · 1JA3368J41 · 1JA3368J41 · 5-5051677-70 · +4 more
  14. O-RING NSN 5331-01-088-5362 P/N AS3581-928 · AMS7259D · M83248/2-928 · MIL-R-83248/2 · +4 more
  15. O-RING NSN 5331-01-086-6410 P/N AS33931-10 · 5331PL0726190 · RE0022168 · AS33931-10 · +4 more
  16. O-RING NSN 5331-01-086-5644 P/N MIL-DTL-25988/3 · MIL-R-25988 · M25988/3-144 · 2-144 L449-60 · +4 more
  17. O-RING NSN 5331-01-083-8795 P/N NAS1613 · NAS1611-020 · 2-020 E515-80 · ARP568-020 MIL- G-22050 GR2 · +4 more
  18. O-RING NSN 5331-01-080-9232 P/N MS9966-07 · 5331PL1739472 · 5330PL0672012 · 5331PL0845032 · +4 more
  19. O-RING NSN 5331-01-080-3802 P/N 877495-00 · SKM-1130-1 · 2-006-C557-7 · 4006-53 · +4 more
  20. O-RING NSN 5331-01-079-8154 P/N AS568-343 · AS568-2-342 · 2-343N299-50 · SAE AS568 · +4 more
  21. O-RING NSN 5331-01-079-7301 P/N S9412-110 · M25988/2-110 · MIL-DTL-25988/2 · MIL-R-25988/2 · +4 more
  22. O-RING NSN 5331-01-078-3429 P/N MS9967-116 · 5331PL0211529 · MS9967-116 · 10117152 · +4 more
  23. O-RING NSN 5331-01-077-6834 P/N 10-408 · 30-003C-A IT 22 · 2-237/N674-70 · 4045223714 · +4 more
  24. O-RING NSN 5331-01-073-4233 P/N X1100-3B FO · DAX13084 · 23013337 · 12288067 · +4 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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