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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 5331-01-315-8880 P/N S8990-243 · MS9386-243 · 5330PL0726167 · MS9386-243 · +4 more
  2. O-RING SET NSN 5331-01-315-3436 P/N LON-104B43X3.5 · 407087 · 701295 · 023396 · +4 more
  3. O-RING NSN 5331-01-306-9603 P/N MS28778-12 · 19A11-C-12-2 · 5331PL2248024 · MS28778-12 · +4 more
  4. O-RING NSN 5331-01-306-3266 P/N 300448 · AS568-11/AM3209 · 300448 · 300448 · +4 more
  5. O-RING NSN 5331-01-304-9821 P/N MS28775-443 · PL-10022-F-18ITEM456E · 20A11-X-M-443 · MS28775-443 · +4 more
  6. O-RING NSN 5331-01-304-6538 P/N MS28775-448 · PL-10022-F-18ITEM456H · 20A11-X-M-448 · MS28775-448 · +4 more
  7. O-RING NSN 5331-01-298-7221 P/N AS3209-024 · AS3209-024 · AS3209-024 · 10335257 · +4 more
  8. O-RING NSN 5331-01-295-1075 P/N AS568-001-10V90-2605 · AS568-001 · M83248/2-001 · MIL-R-83248 TY1 CL2 · +4 more
  9. O-RING NSN 5331-01-291-5636 P/N 2301190145 · HL-19526 PIECE 115 · 982N · HL-19526 PIECE 115 · +4 more
  10. O-RING NSN 5331-01-290-5632 P/N 115J389-28 · MS28775-020 · MS28775-020 · 2-020N304-75 · +4 more
  11. O-RING NSN 5331-01-288-7155 P/N NAS1611-006 · NAS1611-006CP · NAS1611 · NAS1613 · +4 more
  12. O-RING NSN 5331-01-287-4819 P/N 5331PL0166454 · MS28775-141 · MS28775-141CP · A180-141 · +4 more
  13. O-RING NSN 5331-01-287-4816 P/N MS28775-143 · MS28775-143 · A180-143 · MS28775-143CP · +4 more
  14. O-RING NSN 5331-01-287-4815 P/N MS28775-139 · MS28775-139 · A180-139 · A180-139CP · +4 more
  15. O-RING NSN 5331-01-287-4813 P/N MS28775-230 · MS28775-230 · A180-230 · A180-230CP · +4 more
  16. O-RING NSN 5331-01-285-9222 P/N AMS-P-83461/1 · M83461/1-243 · M83461/1-243 · MIL-P-83461/1 · +4 more
  17. O-RING NSN 5331-01-283-9224 P/N NV822201 FIND 400 · CP031A013D3 · AS568-013MIL-G-22050 · AS568-013 · +4 more
  18. O-RING NSN 5331-01-277-6583 P/N AS3085-115 · 2-115 V747-75 · V0747 2-115 · 2-115 V747-75 · +4 more
  19. O-RING NSN 5331-01-277-0369 P/N AS568-012 · AS568-012MILG22050GR2 · M22050-2-012 · MIL-DTL-22050 · +4 more
  20. O-RING NSN 5331-01-275-1391 P/N 1298023-19 · 1298023-19 · E515-8 · E0515 2-275 · +4 more
  21. O-RING NSN 5331-01-274-0050 P/N M83485/1-006 · M83485/1-006 · 74222 FIND 27 · 2-006-V835-75 · +4 more
  22. O-RING NSN 5331-01-274-0049 P/N M25988/3-209 · MIL-DTL-25988/3 · MIL-R-25988/3 · M25988/3-209 · +4 more
  23. O-RING NSN 5331-01-273-1821 P/N MIL-R-83248/1 · M83248/1-242 · M83248/1-242 · SAE-AS83248/1 · +4 more
  24. O-RING NSN 5331-01-271-5185 P/N 035-3238 · 5893840-035 · 5893840-35 · 2-035E515-80 · +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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