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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 5331-00-187-6105 P/N ASTM D 2000 · AS568-904 · 3-904 E603-70 · 3-904E603-70 · +1 more
  2. O-RING NSN 5331-00-182-3054 P/N A-A-59588 CL 3B GR 70 · S9026M132 · S9026M132 · AS568-132 · +1 more
  3. O-RING NSN 5331-00-181-9693 P/N AS3551-329 · MS9241-329 · AS3551-329 · SAE-AS3551 · +1 more
  4. O-RING NSN 5331-00-181-4785 P/N 10055541 · 0875-00705899-5 · 0875-0070S899-5 · 0875-0070S565-5 · +1 more
  5. O-RING NSN 5331-00-180-9904 P/N 913-226-2 · FA · FA(BI-183A) · A913-226-2 · +1 more
  6. O-RING NSN 5331-00-180-9779 P/N PRP568-388-4024-65 · MS9021-388 · 2-388 N506-65 · N0506 2-388 · +1 more
  7. O-RING NSN 5331-00-179-4535 P/N AS568-128 · ARP568-128 · AS568-128 · AS3570-128 · +1 more
  8. O-RING NSN 5331-00-173-8423 P/N NAS1611-48A · NAS1611-048 · 2-048E515-80 · 2-048E515-8 · +1 more
  9. O-RING NSN 5331-00-173-8368 P/N S8057BG7 · S8057BG7 · S8057BG7 · S8057BG7 · +1 more
  10. O-RING NSN 5331-00-173-3037 P/N 243060PC62 · AS568B-239 · 0103160356 · 2-239E515-80 · +1 more
  11. O-RING NSN 5331-00-171-8069 P/N 18586D · A1998PC9 · 99118586 · 18586 · +1 more
  12. O-RING NSN 5331-00-171-7429 P/N 5331-171-7429 · MIL-R-2765 · PD5330-223-7 · MIL-R-2765 · +1 more
  13. O-RING NSN 5331-00-171-6411 P/N AM3227 · AS568-238 · 35016C · AS568-238 · +1 more
  14. O-RING NSN 5331-00-171-5964 P/N NAS1611-145 · 2-145E515-80 · 2-145E515-8 · E515 2-145 · +1 more
  15. O-RING NSN 5331-00-171-5641 P/N 12406 · AMS7270-015ES · 12406 · 4369599 · +1 more
  16. O-RING NSN 5331-00-170-9146 P/N 216-911 · STD1050-4071 · 216-911 · 216-911 · +1 more
  17. O-RING NSN 5331-00-169-0428 P/N S1120-363 · 0AS202-363 · S1120-363 · S1120-363 · +1 more
  18. O-RING NSN 5331-00-168-5897 P/N R2050 · W2987280PC104 · W2987280PC104 · W2987280PC104 · +1 more
  19. O-RING NSN 5331-00-167-8209 P/N 9030481 · 9030481 · 745-239898N · 239898 · +1 more
  20. O-RING NSN 5331-00-167-6540 P/N 750540504 · 750030504 · 750540504 · 750540504 · +1 more
  21. O-RING NSN 5331-00-167-2595 P/N 349-14 · 349-14 · MIL-P-5516C NOTICE 3 CL B · MIL-P-4861 · +1 more
  22. O-RING NSN 5331-00-167-2594 P/N 436-5 · 436-5REVB · 436-5 · 436-5REVB · +1 more
  23. O-RING NSN 5331-00-166-1104 P/N MIL-R-83248/2 · M83248/2-127 · 5331PL1363935 · M83248/2-127 · +1 more
  24. O-RING NSN 5331-00-165-4573 P/N 645003FF8 · 645003FF8 · 645003FF8 · 10117055 · +1 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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