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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 5331-00-166-1049 P/N AS3085-043 · M83248/1-043 · M83248/1-043 · AMS7276 · +17 more
  2. O-RING NSN 5331-00-165-1969 P/N 298365-100ITEM6 · 298365-200 ITEM · AMS7276 · AS3209-254 · +17 more
  3. O-RING NSN 5331-00-162-5810 P/N 2-248N101-70 · 2-248 · ASTM D2000 · AS568-248 · +17 more
  4. O-RING NSN 5331-00-143-8823 P/N 274485PC16 · 150321140 · 941521 · 941521 · +17 more
  5. O-RING NSN 5331-00-122-7253 P/N 274485PC3 · 275744154 · E3355 PC NO. 18 5IN · 20A11C2M254 · +17 more
  6. O-RING NSN 5331-00-054-0167 P/N GS570EM158 · 7866-158 · 60-P-31-158 · PX-1775-158 · +17 more
  7. O-RING NSN 5331-00-047-3917 P/N 7866-042 · 60-P-31-042 · PX-1775-042 · 10V60-141-042 · +17 more
  8. O-RING NSN 5331-00-003-0616 P/N 7866-356 · 60-P-31-356 · PX1775-356 · 10V60-141-356 · +17 more
  9. O-RING NSN 5331-00-001-4810 P/N 7866-045 · 60-P-31-045 · 2507294-28 · PX-1775-045 · +17 more
  10. O-RING NSN 5331-01-244-3527 P/N MS28775-022 · 0-55 · 845-2445100PC4,0.500IN · 845-2445177PC4,0.500IN · +16 more
  11. O-RING NSN 5331-01-186-8336 P/N AMS-P-83461/1 · M83461/1-446 · MIL-P-83461/1 · M83461/1-446 · +16 more
  12. O-RING NSN 5331-01-115-2216 P/N M83461/1-141 · 810-4444600PC19 · AMS-P-83461/1 · M83461/1-141 · +16 more
  13. O-RING NSN 5331-01-107-4963 P/N M83461/1-023 · M83461/1-023 · M83461/1-023 · 803-1385714-3-4 · +16 more
  14. O-RING NSN 5331-01-105-9153 P/N 256202PC18 · AS3581-115 · SAE AMS 7259 · M83248/2-115 · +16 more
  15. O-RING NSN 5331-01-101-8013 P/N 7377-163 · D35-073-2190 · D35C2500004 ITEM 43 · D35C25000003 ITEM 43 · +16 more
  16. O-RING NSN 5331-01-091-6026 P/N 7377-161 · 2285-300REVBPC22 · 4067-70-161 · AS568-161MILP5516CLB · +16 more
  17. O-RING NSN 5331-01-028-5743 P/N MS28775-029 · MS28775-029 · 2-029N304-70 · M30-0285743 · +16 more
  18. O-RING NSN 5331-01-019-2450 P/N MS28775-269 · 25109 · PRP568-269-4067-70 · MS28775-269 · +16 more
  19. O-RING NSN 5331-01-013-5820 P/N 274485PC2 · CM1-242-B46 · 01-435-0366-4 PIECE 32 · AS568 · +16 more
  20. O-RING NSN 5331-01-011-7997 P/N 7377-274 · P48026-274 · 4067-70-274 · PRP568-274-4067-70 · +16 more
  21. O-RING NSN 5331-01-005-3215 P/N 0603-003PC12 · AS3209-346 · AMS 7276 · M83248/1-346 · +16 more
  22. O-RING NSN 5331-01-005-3212 P/N 857950-7 · 312033 · 845-7286652 ITEM 37 · 1479RA PIECE 23 · +16 more
  23. O-RING NSN 5331-01-005-0515 P/N AS3209-165 · AS3209-165 · DD-4905 REF NO 16 · AS3209-165 · +16 more
  24. O-RING NSN 5331-00-953-1882 P/N 214-006-9078D · 214-9078D · 8967-19 · B55104-19 · +16 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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