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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 5331-01-093-3503 P/N 9HE526 · 9HE526 · AMS-P-5510 · AS568-029 · +4 more
  2. O-RING NSN 5331-01-092-8749 P/N MIL-R-25988/1 · MIL-DTL-25988/1 · M25988/1-042 · 2661058Y042 · +4 more
  3. O-RING NSN 5331-01-092-5508 P/N 013-7399 · AS568-013MIL-P-5510 · 2-013N507-9 · 2-013 N507-90 · +4 more
  4. O-RING NSN 5331-01-090-4871 P/N 11-011B · AS568B STD P/N -011 · AMS3238E · AS568-011AMS3238 · +4 more
  5. O-RING NSN 5331-01-030-1826 P/N 0.080IDX0.035W COMPOUND 11647 · 0.080IDX0.035W COMPOUND 1393-70 · 0.080IDX0.035W COMPOUND F80 · MIL-R-25988B · +4 more
  6. O-RING NSN 5331-01-029-9925 P/N 39442 · D11200FF ITEM 21 · AS3209-137 CP · M83248-1-137 · +4 more
  7. O-RING NSN 5331-01-028-8981 P/N AS568-256 · 5331PL0755715 · 2-256 · 2-256-S604-70 · +4 more
  8. O-RING NSN 5331-01-028-0213 P/N AS568-442 · 2-442-N674-70 · 238-5442 · L55410 · +4 more
  9. O-RING NSN 5331-01-024-9686 P/N 1945860 · 1945860 · 310SX46 · 310SX46 · +4 more
  10. O-RING NSN 5331-01-024-7094 P/N A4937OMZZ · D49267 ITEM 10 · CE46674-28 · 2-267 N304-75 · +4 more
  11. O-RING NSN 5331-01-024-2513 P/N D2000 M3CH910B34EO16EO36 · AS568B-028 · 2-028 N552-90 · 2-028N552-9 · +4 more
  12. O-RING NSN 5331-01-023-7632 P/N 01-435-0296-5 PIECE 98 · AS568-172MIL-P-25732 · AS568-172 · 2-172-BUNA-N · +4 more
  13. O-RING NSN 5331-01-022-9023 P/N AS568-126E540-80 · 4400483-1261 · 042238001PC004 · 2-126E540-8 · +4 more
  14. O-RING NSN 5331-01-020-5951 P/N D2000GRM2AA815A13F17EA14 · AS568-015 · 2-015E540-8 · 2-015 E540-80 · +4 more
  15. O-RING NSN 5331-01-017-3245 P/N BACP11L437 · BACP11L437 · 11-437 · BACP11L437 · +4 more
  16. O-RING NSN 5331-01-014-2150 P/N C47010112 · 1302342390 · 1302342390 · 332-53910 · +4 more
  17. O-RING NSN 5331-01-013-7102 P/N AS3551-309 · AS3551-309 · 5331PL0845029 · MS9241-309 · +4 more
  18. O-RING NSN 5331-01-013-1452 P/N 4121-53 · 18256PIECE11 · 4121-53 · 028-13717 · +4 more
  19. O-RING NSN 5331-01-013-1138 P/N AS568B-213 · P37/433/3PC62 · 5018/53 · ARP568-213C557- 7 · +4 more
  20. O-RING NSN 5331-01-008-6816 P/N 3-20N219-7 · 7052637-06 · ASTMD2000 · AS568-920 · +4 more
  21. O-RING NSN 5331-01-007-8798 P/N M25988/1-025 · M25988/1-025 · AMS-R-25988 · M25988/1-025 · +4 more
  22. O-RING NSN 5331-01-007-4891 P/N AS3209-428 · M83248/1-428 · MIL-R-83248/1 · M83248/1-428 · +4 more
  23. O-RING NSN 5331-01-007-1617 P/N AS568-034MILR25988TY1CL1CR70 · M25988/1-034 · MIL-DTL-25988/1 · MIL-R-25988/1 · +4 more
  24. O-RING NSN 5331-01-007-1608 P/N M25988/1-214 · MIL-DTL-25988/1 · M25988/1-214 · MIL-R-25988/1 · +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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