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 5331-01-097-8957 P/N 803-1385721-5-4 · 803-4384536-5XX-49 · AMS-P-83461/1 · M83461/1-129 · +9 more
  2. O-RING NSN 5331-01-092-5503 P/N 018-7799 · 2HE238 · 2HG238 · 2HG238 · +9 more
  3. O-RING NSN 5331-01-028-0818 P/N 257-8307 · PRP257-8307 · CLASS1SIZE257 · AS568-257 · +9 more
  4. O-RING NSN 5331-01-015-5747 P/N 045-7507 · 7385926 FIND NO. 187 · PM-2009-CM · 11-045 · +9 more
  5. O-RING NSN 5331-01-013-3723 P/N 2-208 BUNA-N · AS568-208MIL-G- 21569 CLASS 1 · 2-208N219-70 · 2-208N674-70 · +9 more
  6. O-RING NSN 5331-01-012-5148 P/N 500921 · 20A11C2M249 · AS568-249 · NAS568-249 · +9 more
  7. O-RING NSN 5331-01-007-4894 P/N 10000917 · 001182.851.000 · 607948.001 SEQ 271 · 001182.651.000 · +9 more
  8. O-RING NSN 5331-01-007-4888 P/N AS3209-174 · AS3209 · M83248/1-174 · MIL-R-83248/1 · +9 more
  9. O-RING NSN 5331-01-006-6913 P/N PL-DT7-33-2606 REV B IT18 · D2000 · AS568-141 · 54-700-141 · +9 more
  10. O-RING NSN 5331-01-005-4060 P/N 1479RA PIECE 25 · AS3209-342 · MIL-R-83248/1 · M83248/1-342 · +9 more
  11. O-RING NSN 5331-01-005-3202 P/N D49445-VTN ITEM 10 · DD-4936 ITEM 14 · DD-4920 ITEM 14 · AS3209-267 · +9 more
  12. O-RING NSN 5331-01-005-2305 P/N AMS 7276 · AS3209-377 · AS3209-377 · MIL-R-83248/1 · +9 more
  13. O-RING NSN 5331-01-005-0541 P/N NAS1593-425 · AS3209-425 · M83248/1-425 · MIL-R-83248/1 · +9 more
  14. O-RING NSN 5331-01-005-0530 P/N PL-999F0769 PIECE 38 · AMS7276 · AS3209-383 · M83248/1-383 · +9 more
  15. O-RING NSN 5331-01-005-0520 P/N AS3209-209 · MIL-R-83248/1 · M83248/1-209 · 5331PL1240405 · +9 more
  16. O-RING NSN 5331-01-005-0506 P/N AS3209-106 · MIL-R-83248/1 · M83248/1-106 · 5331PL2228376 · +9 more
  17. O-RING NSN 5331-01-004-7224 P/N 2054-32 FITTING F-1753 · 2054-36 FITTING F-1753 · 2054-38 FITTING F-1753 · 2054-34 FITTING F-1753 · +9 more
  18. O-RING NSN 5331-00-973-8161 P/N MIL-DTL-25988/3 · M25988/3-906 · MIL-R-25988/3 · C008-6 · +9 more
  19. O-RING NSN 5331-00-969-4400 P/N PRP121-11646 · 121-11646 · B63115-121 · PRP568-121-1133-60 · +9 more
  20. O-RING NSN 5331-00-968-1864 P/N 07324-1A-A00001 ITEM 9 · 200011 · AS568-213AMS3304 · AS3582-213 · +9 more
  21. O-RING NSN 5331-00-966-9138 P/N 60R · N0647 3-906 · SF-10677 PIECE · 4363661 · +9 more
  22. O-RING NSN 5331-00-959-3629 P/N 242-17107 · 2-242 · NAS1593-242 · 598-700-1894227REVAITEM5 · +9 more
  23. O-RING NSN 5331-00-955-0157 P/N NV822203 FIND 35 · NV822201 FIND 82 · NAS1611-012 · NAS1611-012A · +9 more
  24. O-RING NSN 5331-00-951-2492 P/N PRP442-7377 · 442-7377 · PRP568-442-4067-70 · MS28775-442 · +9 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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