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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 5331-01-117-5954 P/N 6V-3908 · 8HB251 · 8HB251 · AS3581-345 · +11 more
  2. O-RING NSN 5331-01-116-1053 P/N M25988/1-009 · M25988/1-009 · MIL-R-25988/1 · MIL-DTL-25988/1 · +11 more
  3. O-RING NSN 5331-01-115-8225 P/N 2HL544 · 2HL544 · AS568B-016 · AS568-016 · +11 more
  4. O-RING NSN 5331-01-112-4058 P/N 2-138N756-75 · 07A568-138N · PL44616-121H FIND NO. 25 · B86002-138N · +11 more
  5. O-RING NSN 5331-01-106-0938 P/N 253-19359 · PRP253-19359 · PRP568-253-9009-90 · NAS1594-253 · +11 more
  6. O-RING NSN 5331-01-101-6073 P/N AS3581-119CP · M83248-2-119 · 52660-300 ITEM NO. 24 · 4400171-1190 · +11 more
  7. O-RING NSN 5331-01-096-8823 P/N ARP568-214 · AS3581-214 · M83248-2-214 · M83248-2-214 · +11 more
  8. O-RING NSN 5331-01-091-0757 P/N 7377-039 · P48026-039 · 4067-70-039 · MS28775-039 · +11 more
  9. O-RING NSN 5331-01-029-9921 P/N ARP568-125MILR25897TY1CL1 · 52660-300 ITEM 22 · L180-125 · 62930-5 ITEM 14 · +11 more
  10. O-RING NSN 5331-01-018-5661 P/N 7866-048 · 10V60-141-048 · RT253-65-048 · 457-60-048 · +11 more
  11. O-RING NSN 5331-01-013-3019 P/N 1U0002-011 · 701333-906 · AS568B-906 · 3-906C1124-70 · +11 more
  12. O-RING NSN 5331-01-006-3930 P/N M83248/1-003 · AS3209-003 · M83248/1-003 · MIL-R-83248/1 · +11 more
  13. O-RING NSN 5331-01-005-0543 P/N 845-7285124 ITEM 7 · AMS7276G · AS3209-427 · MIL-R-83248/1 · +11 more
  14. O-RING NSN 5331-01-005-0524 P/N PL-999F0769 PIECE 37 · M83248/1-277 · MIL-R-83248/1 · M83248/1-277 · +11 more
  15. O-RING NSN 5331-01-005-0511 P/N AS3209-177 · S9026L177 · S9026L177 · S9026L177 · +11 more
  16. O-RING NSN 5331-01-005-0503 P/N M83248/1-103 · AMS7276 · AS3209-103 · M83248/1-103 · +11 more
  17. O-RING NSN 5331-01-005-0502 P/N AMS7276 · AS3209-102 · M83248/1-102 · MIL-R-83248/1 · +11 more
  18. O-RING NSN 5331-00-997-2989 P/N AS568-024 · AS568-024 SB715BE1E3F1 · G140-1-78X28-30 · G140-1-78X28-30 · +11 more
  19. O-RING NSN 5331-00-995-5382 P/N AS3582-014 · AS568-014ZZR765CL2BGR70 · 5331PL0657685 · 5331PL0719671 · +11 more
  20. O-RING NSN 5331-00-984-3756 P/N 159-40005-00 · 099-00134-00 ITEM 89 · AS586-212 · AS568-212 · +11 more
  21. O-RING NSN 5331-00-965-0749 P/N AS3582-114 · AS3582-114 · 5331PL1280027 · MS9068-114 · +11 more
  22. O-RING NSN 5331-00-954-4898 P/N 293726R1 · 293726R1 · 106469 · NAS1611-228A · +11 more
  23. O-RING NSN 5331-00-946-7099 P/N 649-602-901-0 · NAS1613 · NAS1612-8 · NAS1602-908 · +11 more
  24. O-RING NSN 5331-00-928-9451 P/N PRP227-11646 · PRP568-227-1133-60 · B63115-227 · 11-227-8450-60 · +11 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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