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 5331-00-079-6496 P/N 4398602-96 · PRP568-148-4067-70 · MS28775-148 · AS28775 · +18 more
  2. O-RING NSN 5331-00-013-7784 P/N 2D3-02180-18 · A-15185 · 3296038 · 500000-0024-0002 · +18 more
  3. O-RING NSN 5331-00-004-5074 P/N GS570EM044 · 7866-044 · 60-P-31-044 · PX-1775-044 · +18 more
  4. O-RING NSN 5331-01-118-2080 P/N 408831231 · AMS-P-83461/1 · M8346/1-332 · M83461/1-332 · +17 more
  5. O-RING NSN 5331-01-115-8226 P/N B-5774SK ITEM 13 · 2HL545 · 2HL545 · AS568-012 · +17 more
  6. O-RING NSN 5331-01-111-8437 P/N 2730-806 ITEM 8 · 501-6398094 ITEM 8 · M83248/1-113CP · AS568-113AMS7276 · +17 more
  7. O-RING NSN 5331-01-105-9151 P/N 7377-268 · 01-061-018 · 91-486-201-ITEM 13 · P48026-268 · +17 more
  8. O-RING NSN 5331-01-091-0758 P/N 7377-250 · P48026-250 · 36666-250 · 4067-70-250 · +17 more
  9. O-RING NSN 5331-01-030-1825 P/N CV0424-016 · 6J-2680 · 2-232 · 2-232N101-70 · +17 more
  10. O-RING NSN 5331-01-006-2129 P/N 222-19359 · 4564-222EU · 845-7285244 ITEM 78 · 4564-222EU · +17 more
  11. O-RING NSN 5331-01-005-4061 P/N 4KK170 · S10780-030 · 4KK170 · AMS7276 · +17 more
  12. O-RING NSN 5331-00-972-4694 P/N 45Z91D1 · D-WK-492-A43-PIECE 12-6 · Y-24398-1-48 · PRP568-115-4200-70 · +17 more
  13. O-RING NSN 5331-01-534-8877 P/N 3423-5000 ITEM 19 · 1000-0060-20 · 3423-1001-1 ITEM 25 · 3423-1001 ITEM 25 · +17 more
  14. O-RING NSN 5331-01-393-5639 P/N 04724-00120 · B05-L REFERENCE 090 · 04724-00120 · B05-L/090 · +17 more
  15. O-RING NSN 5331-01-051-5541 P/N 999F0722 PC 37 · P48026-040 · MS28775-040 · MIL-P-25732 · +17 more
  16. O-RING NSN 5331-01-049-7373 P/N D4200 ITEM 3 · D4200 ITEM 3 · M83248/1-023 · M83248/1-023CP · +17 more
  17. O-RING NSN 5331-01-047-6305 P/N AS568-0113CH915B34EO16EO36 · AS568-0113CH915B34EO16EO36 · 2-011 NBR · 7KK860 · +17 more
  18. O-RING NSN 5331-01-042-2823 P/N 200-724-17 · 400-221-42 · 222 · AMS3209 · +17 more
  19. O-RING NSN 5331-01-038-0926 P/N 55-22034 PART 7 · 55-22015CPIECE7 · 756 263 · 757 262 · +17 more
  20. O-RING NSN 5331-01-033-9089 P/N 7866-361 · 60-P-31-361 · 888D053003 ITEM 9 · 887B051336 · +17 more
  21. O-RING NSN 5331-00-759-2121 P/N 017-11647 · 25C85-85 · 100111AM93 · MIL-DTL-25988/1 · +17 more
  22. O-RING NSN 5331-00-689-6480 P/N AS568A-012-8CP · 500531-2 · 500628-7CP · 2449143 PIECE 8 · +17 more
  23. O-RING NSN 5331-00-676-9239 P/N 24628 · AP24628 · 95000-214 · 5427-19 · +17 more
  24. O-RING NSN 5331-00-641-0777 P/N 7047091 · 914-7-711-70 · 287MR003P009 · 5331PL1279786 · +17 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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