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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 5331-01-321-7194 P/N A-A-55801 · AA55801-124-DA · STSV047AN124 · SV799335 FIND 54 · +6 more
  2. O-RING NSN 5331-01-321-3604 P/N 1298023-28 · 1298023-28 · 1298023-28 · 2-218 E0515-80 1W2Y · +6 more
  3. O-RING NSN 5331-01-314-7238 P/N AMS7276 · M83248/1-141 · MIL-P-83248 · V3D10214 ITEM 18 · +6 more
  4. O-RING NSN 5331-01-306-9602 P/N MS28775-10 · PL-10022-F-18ITEM456A · 19A11-C-10-2 · 5331PL0809359 · +6 more
  5. O-RING NSN 5331-01-292-4728 P/N 639546 · SAE NAS568-149 · AS568-149 · B 2575.146.590 · +6 more
  6. O-RING NSN 5331-01-290-2114 P/N A-203 · 341SYM5 · 21302 FIND 59 · AS3209-116 · +6 more
  7. O-RING NSN 5331-01-288-9170 P/N M83248/2-437 · AS568 · SAW-AMS-R-83248/2 · AS568C-147 · +6 more
  8. O-RING NSN 5331-01-287-4817 P/N AS28775 · MIL-P-25732 · MS28775-126 · A180-126 · +6 more
  9. O-RING NSN 5331-01-282-3161 P/N AS28775 · MIL-P-25732 · MS28775-354 · 5331PL0810174 · +6 more
  10. O-RING NSN 5331-01-280-6787 P/N SP43171 · SL15019 ITEM 47 · AS3578-371 · 5331PL0890626 · +6 more
  11. O-RING NSN 5331-01-269-3737 P/N 1N141500015 · 3-904-V709-90 · 20235 FIND 30 · 3-904V709-90 · +6 more
  12. O-RING NSN 5331-01-253-3730 P/N 1PS90 · AS568-117 · 2-117N674-75 · 2-117N674-70 · +6 more
  13. O-RING NSN 5331-01-249-7878 P/N 845-2110224 PC 24 · 845-2181262PC14,SIZE0.25 · MS28775-014 · MS28775-014 · +6 more
  14. O-RING NSN 5331-01-246-8359 P/N 29KP612 · 29KP612 · 2-009-N552-90 · 020009N0552 · +6 more
  15. O-RING NSN 5331-01-240-5987 P/N 810WA48S-30 · 4856-D · 4856-DPC3 · 810WA48S-3 · +6 more
  16. O-RING NSN 5331-01-237-6868 P/N H599070008 · AS568 · AS568-008 · AS568-008 MIL-R-3065 TY TA · +6 more
  17. O-RING NSN 5331-01-235-7584 P/N 457-1577 · 21522115-436 · 2152 2115-436 · 2152 2115-436 · +6 more
  18. O-RING NSN 5331-01-219-7478 P/N AS3581-126 · AMS7259 · M83248/2-126 · MIL-R-83248/2 · +6 more
  19. O-RING NSN 5331-01-218-7138 P/N 7-5075 ITEM 20 · 7-5075 ITEM 20 · AMC-R-83485 · M83485/1-224 · +6 more
  20. O-RING NSN 5331-01-215-7133 P/N 10003919 · S000145 · 130283A · 130283A · +6 more
  21. O-RING NSN 5331-01-214-5092 P/N M25988/4-132 · M25988/4-132 · AS568-132MILR25988/4 · M25988/4-132 · +6 more
  22. O-RING NSN 5331-01-213-6763 P/N 7052637 · 7052637-10 · 64318REV-J FIND 18 · 00949J · +6 more
  23. O-RING NSN 5331-01-210-3438 P/N PRP568-013-1133-60 · MIL-DTL-25988/3 · MIL-R-25988 · MIL-R-25999/3-013 · +6 more
  24. O-RING NSN 5331-01-210-2836 P/N 1354-397 · AMS-R-25988 · MIL-DTL-25988/4 · M25988/4-257 · +6 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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