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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 5331-00-167-5147 P/N 265-19357 · AS3209-265 · MILR83248 · M83248/1-265 · +13 more
  2. O-RING NSN 5331-00-166-8401 P/N 153-015-10 · 0153-0015-1000 · 649-393-156-0 · MILR83248 · +13 more
  3. O-RING NSN 5331-00-166-1112 P/N AS568-226/VITON · D50-0068 ITEM 19 · D50-0013 ITEM 25 · D50-0068 ITEM 19 · +13 more
  4. O-RING NSN 5331-00-165-1979 P/N 928-19357 · PRP928-19357 · AMS7276 · AS568-928 · +13 more
  5. O-RING NSN 5331-00-159-9152 P/N AS3209-276 · AMS7276 · M83248/1-276 · MILR83248 · +13 more
  6. O-RING NSN 5331-00-137-3120 P/N 7866-178 · PX1775-178 · 10V60-141-178 · 457-60-178 · +13 more
  7. O-RING NSN 5331-00-111-3747 P/N 2GK842 · 2GK842 · AS568-128/MIL-G-21569 CL I · 5331PL1334120 · +13 more
  8. O-RING NSN 5331-00-103-1747 P/N AS3209-114 · AS3209-114 · AS3209-114 · AS3209 · +13 more
  9. O-RING NSN 5331-00-044-5726 P/N AS3582-016 · AS3582-016 · 016-7117 · 0206724-030 · +13 more
  10. O-RING NSN 5331-00-042-8605 P/N 4564222 · ARP 222 · ARP568-222 · ARP568-222MILG23652TYPE2 · +13 more
  11. O-RING NSN 5331-00-025-3772 P/N 7866-355 · 60-P-31-355 · PX1775-355 · 10V60-141-355 · +13 more
  12. O-RING NSN 5331-01-331-8137 P/N 01010-5PC31 · 01010 PC 31 · 250-6316669P/OITEM50 · MS28778-04 · +12 more
  13. O-RING NSN 5331-01-324-5265 P/N PL2850-0030 FIND 42 · 1000-0060-015 P · AS3209 · AMS7276 · +12 more
  14. O-RING NSN 5331-01-286-2411 P/N 327-11646 · PRP27-11646 · B63115-327 · PRP568-327-1133-60 · +12 more
  15. O-RING NSN 5331-01-207-0115 P/N 150-7377 · A706-150 · 0150114 · P48026-150 · +12 more
  16. O-RING NSN 5331-01-205-9787 P/N 925261-0 · 462034-6370001 · 2152 2115-434 · 9712-2/53 · +12 more
  17. O-RING NSN 5331-01-191-2523 P/N AV23A1116BD ITEM 3 · ST1946-119 · AMS-R-83485/1 · M83485/1-119 · +12 more
  18. O-RING NSN 5331-01-183-0991 P/N M83461/1-223 · 803-6397247-3XXX-17 · M83461/1-223 · AS83461/1 · +12 more
  19. O-RING NSN 5331-01-183-0987 P/N 442-7757 · PRP442-7757 · PRP568-442-4367-70 · AMS-P-83461/1 · +12 more
  20. O-RING NSN 5331-01-183-0985 P/N 8327984 · 8330141 · 661E17 · KC9613 · +12 more
  21. O-RING NSN 5331-01-175-0311 P/N 341-7757 · PRP341-7757 · PRP568-341-4367-70 · M83461/1-341 · +12 more
  22. O-RING NSN 5331-01-134-0766 P/N 002390T · AS568B-215 · MIL-G-21569B CL1 · 0065220.35.63 · +12 more
  23. O-RING NSN 5331-01-129-3142 P/N 113-11648 · PRP113-11648 · 950492C1 · 16606A81-11 · +12 more
  24. O-RING NSN 5331-01-129-2021 P/N 010-11648 · PRP010-11648 · AS568-010 MIL-R-25988 CL 1 GR 80 · MIL-DTL-25988/4 · +12 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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