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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 5331-00-221-6180 P/N MS9386-007 · 5331PL1038164 · 5331PL1689139 · MS9386-007 · +2 more
  2. O-RING NSN 5331-00-217-5885 P/N 1500-0274 · 1500-0274 · 1500-0274 · 2-151ES40-8 · +2 more
  3. O-RING NSN 5331-00-213-0577 P/N D2-9781PC120 · D2-9797-230 · D2-9778PC10 · D2-9781PC120 · +2 more
  4. O-RING NSN 5331-00-204-4937 P/N 48499 · 48499 · PRP568-345-975-75 · 48499 · +2 more
  5. O-RING NSN 5331-00-202-0807 P/N AS568B-904 · AS568-904 2FK608A19EA36F19Z1 · 956235-904C · 10163220 · +2 more
  6. O-RING NSN 5331-00-199-1644 P/N AMS-5516 · AS568-256MILP25732 · ARP568-256MILP5516-90DURM · AS568-256 · +2 more
  7. O-RING NSN 5331-00-197-8981 P/N AS3582-221 · MS9068-221 · AS568-221ZZR765 CL2BGR70 · 2-221 S604-70 · +2 more
  8. O-RING NSN 5331-00-196-5338 P/N 426-7117 · 250S53 · AN6227-53 · PS1-30-5-53 · +2 more
  9. O-RING NSN 5331-00-194-6970 P/N AS3582-222 · 5331PL1858135 · MS9068-222 · 5330001946970 · +2 more
  10. O-RING NSN 5331-00-194-3745 P/N 58-010-21 · 2311F4B ITEM 8 · 5331PL0633158 · 58-010-21 · +2 more
  11. O-RING NSN 5331-00-191-3558 P/N S9412-165 · S9412-165 · M25988/2-165 · MIL-DTL-25988/2 · +2 more
  12. O-RING NSN 5331-00-186-1272 P/N RB12122-112 · RB12122 · 182568 · 182568 · +2 more
  13. O-RING NSN 5331-00-185-1735 P/N 16606A54-94 · MIL-R-25988/3 · MIL-DTL-25988/3 · M25988/3-018 · +2 more
  14. O-RING NSN 5331-00-185-0580 P/N AS3582-240 · MS9068-240 · MS9068-240ES · 446 2240 S7 · +2 more
  15. O-RING NSN 5331-00-184-7399 P/N 006-11306 · PRP006-11306 · AMS3303 · AS568B-006 · +2 more
  16. O-RING NSN 5331-00-184-4064 P/N S9412-030 · S9412-030 · MIL-R-25988 · M25988/2-030 · +2 more
  17. O-RING NSN 5331-00-182-3068 P/N AUT20250X125A · 10000983 · 261-0215-008 · B0318 2025-0125 · +2 more
  18. O-RING NSN 5331-00-180-9098 P/N AS3582-123 · MS9068-123 · 2-123 S604-70 · 2-123 S604-70 · +2 more
  19. O-RING NSN 5331-00-180-9090 P/N AS3582-239 · MS9068-239 · 2-239 S604-70 · 2-239S604-70 · +2 more
  20. O-RING NSN 5331-00-179-9444 P/N MIL-R-25988 · MIL-DTL-25988/2 · MIL-R-25988/2 · M25988/2-204 · +2 more
  21. O-RING NSN 5331-00-171-5737 P/N AS3570-247 · AN123907 · Z00.N7423060907 · 9599010143 · +2 more
  22. O-RING NSN 5331-00-171-5611 P/N 58316K3 · S8316K3 · 58316K3 · 58316K3 · +2 more
  23. O-RING NSN 5331-00-170-1573 P/N AS3582-138 · MS9068-138 · 2-138 S604-70 · 2-138 S604-70 · +2 more
  24. O-RING NSN 5331-00-169-9261 P/N PRP568-109-4024-65 · AS3578-109 · MS9021-109 · 2-109N506-65 · +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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