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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 5331-01-264-5922 P/N SS800-67 · SS800-67 · SS800-67 · SS800-67 · +3 more
  2. O-RING NSN 5331-01-261-2357 P/N AS568B-329 · D2000 GRADE M3BC714 · AS568-329 · 6138953-3 · +3 more
  3. O-RING NSN 5331-01-260-8954 P/N HL19354 PIECE 243.5 · RNG1379 · HL19354 PIECE 243.5 · HL19354 PIECE 243.5 · +3 more
  4. O-RING NSN 5331-01-254-8297 P/N 20A11EM141 · 20A11EM141 · Z-11830 · TYPE PM-SSC2 24 20 · +3 more
  5. O-RING NSN 5331-01-253-9835 P/N NE-41-8273 · 19297 · 5331PL0166453 · SR2721-75 · +3 more
  6. O-RING NSN 5331-01-252-0124 P/N AMS7259 · AS3581-448 · M83248/2-448 · M83248/2-448 · +3 more
  7. O-RING NSN 5331-01-250-3312 P/N AMS-4-83485/1 · M83485/1-109 · M83485/1-109 · MIL-R-83485/1 · +3 more
  8. O-RING NSN 5331-01-249-9552 P/N E103972 FIND NO 36 · D319206 FIND 58 · D305308 FIND NO 71 · WG130237 · +3 more
  9. O-RING NSN 5331-01-249-7645 P/N 11-110 · BACP11L110 · ARP-568-110 · 2-110 · +3 more
  10. O-RING NSN 5331-01-249-7047 P/N 561-515-0004 · 561-515-0004 · KDAC-10380 · 561-515-0004 · +3 more
  11. O-RING NSN 5331-01-249-3720 P/N MS28775-257 · AS28775-257 · MS28775-257 · SAE-AS28775 · +3 more
  12. O-RING NSN 5331-01-249-0492 P/N MS28775-254 · 5331PL0897428 · MS28775-254 · 230079144 · +3 more
  13. O-RING NSN 5331-01-243-9299 P/N AS3581-336 · M83248/2-336 · MIL-R-83248/2 · 5331PL1274739 · +3 more
  14. O-RING NSN 5331-01-241-7740 P/N 65E5251 PC31 · MS29513-012 · 5331PL0639178 · MS29513-012 · +3 more
  15. O-RING NSN 5331-01-241-4033 P/N AS28775 · MIL-P-25732 · MS28775-269 · MIL-P-25732 · +3 more
  16. O-RING NSN 5331-01-241-1939 P/N MS28775-128CP · MS28775-128 · MS28775-128 · MS28775-128CP · +3 more
  17. O-RING NSN 5331-01-241-1136 P/N 142-3238 · PRP142-3238 · PRP568-142-5607-80 · NAS1613 · +3 more
  18. O-RING NSN 5331-01-240-9452 P/N SK-001ITEM4 · 845-1889587,PC 19 · 845-2445182PC6 · 845-2110254PC6 · +3 more
  19. O-RING NSN 5331-01-240-2410 P/N 287-6008P038 · MIL-R-25988/3 · MIL-DTL-25988/3 · M25988/3-038 · +3 more
  20. O-RING NSN 5331-01-237-5246 P/N 820-4551459H03 · 2-014 N180-70 · 820-4551459H03 · PO012375246 · +3 more
  21. O-RING NSN 5331-01-236-1539 P/N MS28775-357 · AS28775 · MIL-P-25732 · MIL-P-25732 · +3 more
  22. O-RING NSN 5331-01-219-7931 P/N MS28775-230 · MIL-P-25732 · MS28775-230 · MS28775-230DS · +3 more
  23. O-RING NSN 5331-01-218-3230 P/N MS9967-018 · 5330PL0672631 · 5331PL0848114 · MS9967-018 · +3 more
  24. O-RING NSN 5331-01-217-1787 P/N MS29513-353 · MS29513-353 · MS29513-353 · MS29513-353 · +3 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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