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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 5331-01-123-2831 P/N 162C9413-3.987 · 162C9413 · 162C9413-3.987P01 · 162C9413 · +1 more
  2. O-RING NSN 5331-01-122-8136 P/N M83248-1-229 · M83248-1-229CP · NS-3983 FIND 19CP · NS-3983 FIND 19 · +1 more
  3. O-RING NSN 5331-01-121-2764 P/N GS570J2K216 · GS570J2K16 · GS570J2K16 · 216-SR569-70 · +1 more
  4. O-RING NSN 5331-01-120-9438 P/N MIL-DTL-25988/2 · MIL-R-25988/2 · M25988/2-116 · S9412-116 · +1 more
  5. O-RING NSN 5331-01-120-6054 P/N RA10118-89 · NE-19-8273 · RA10118-89 · 9169M40P118 · +1 more
  6. O-RING NSN 5331-01-120-4390 P/N 2606136-133 · 2606136-133 · 10117161 · DB1841 · +1 more
  7. O-RING NSN 5331-01-120-3838 P/N 2606136-217 · 2606136-217 · 10154092 · DB1808 · +1 more
  8. O-RING NSN 5331-01-120-1456 P/N RA10117-89 · NE-18-8273 · 9169M40P117 · 9365M41P117 · +1 more
  9. O-RING NSN 5331-01-120-1450 P/N MIL-DTL-25988/3 · M25988/3-139 · MIL-R-25988/3 · 10163397 · +1 more
  10. O-RING NSN 5331-01-119-8755 P/N 7016MS160T · 7016MS160T · ST7M254-016-2 · 10163889 · +1 more
  11. O-RING NSN 5331-01-119-7208 P/N ASTMD2000GRM3CH714A25B14EO · AS568-103 · 2-103-N674-70 · 2-103N674-70 · +1 more
  12. O-RING NSN 5331-01-119-4399 P/N 2661058A111 · 2BA148 · 2BA148 · 2661058A111 · +1 more
  13. O-RING NSN 5331-01-118-8626 P/N MIL-R-25988/3 · M25988/3-044 · MIL-DTL-25988/3 · 2-044L946-60 · +1 more
  14. O-RING NSN 5331-01-117-9283 P/N 928-428 · 230928040100001 · SM9058-1 ITEM 21 · 928-100 · +1 more
  15. O-RING NSN 5331-01-117-3469 P/N AS568-121 · ASTM-D2000 M3CH910B34EO16EO · RAR3009 · 2-121N552-90 · +1 more
  16. O-RING NSN 5331-01-117-1016 P/N MIL-DTL-25988/2 · M25988/2-138 · MIL-R-25988 · S9412-138 · +1 more
  17. O-RING NSN 5331-01-115-8109 P/N 3187158-020 · 3187158-020 · 3187158-020 · 3187158-020 · +1 more
  18. O-RING NSN 5331-01-115-4757 P/N M25988/3-223 · MIL-R-25988/3 · MIL-DTL-25988/3 · 2-223L1223-60 · +1 more
  19. O-RING NSN 5331-01-114-4491 P/N RA12910-01 · 581R130H24 · 1JA3368J68 · RA12910-01 · +1 more
  20. O-RING NSN 5331-01-113-9869 P/N SM-C-772429-11 · 414193-57 · 537531-5051 · 5-051 E515-80 · +1 more
  21. O-RING NSN 5331-01-113-9861 P/N NAS1601-131 · NAS1611-131 · NAS1613 · 16D116 ITEM 14 · +1 more
  22. O-RING NSN 5331-01-113-4763 P/N M25988/3-210 · MIL-DTL-25988/3 · M25988/3-210 · MIL-R-25988/3 · +1 more
  23. O-RING NSN 5331-01-113-2085 P/N 9535675 · MIL-R-25988/3 · M25988/3-216 · MIL-DTL-25988/3 · +1 more
  24. O-RING NSN 5331-01-112-7767 P/N 71064 · 71175 · 71064 · 71175 · +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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