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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 5331-01-361-1457 P/N 2-155-NBR · 24086/3 PIECE 15 · 24086/3 ITEM 16 · 2-155-NBR
  2. O-RING NSN 5331-01-360-7724 P/N 9HR357 · 29501469 · BCP1250 · 10340778
  3. O-RING NSN 5331-01-360-7653 P/N AS568-912 MIL-R-83285 GRADE 80 · SAE-AMS-R-83285 · AS568-912 MIL-R-83285 GRADE 80 · AMS-R-83285GR80/AS568-912
  4. O-RING NSN 5331-01-360-6018 P/N 5HA8 · 23046274 · 23046274 · 5HA8
  5. O-RING NSN 5331-01-360-5356 P/N 27771 · 27771 · RAQ0238 · 40003760
  6. O-RING NSN 5331-01-360-4818 P/N 27772 · 27772 · RAQ0237 · 40002780
  7. O-RING NSN 5331-01-360-0113 P/N ST506Z5B · SD051085 NO.6 · ST506Z5B · ST051015BF11A-6
  8. O-RING NSN 5331-01-359-4818 P/N 06689212303 · A6689.212.303 · 20368PC35 · 06689212303NE7
  9. O-RING NSN 5331-01-359-3054 P/N 1522E28-20 AND 1520E21-30 · 2-210N674-70 · 2-210N0674-70 · N0674-70 2-210
  10. O-RING NSN 5331-01-359-2152 P/N AN-3.0-125F-B-H ITEM 5 · M6723393 · TG-3.0-125F-01B1-0 · TG-3.0-125F-01B 10
  11. O-RING NSN 5331-01-359-1498 P/N NAS1613 · NAS1611-174A · NAS1601-174 · 5331PL2336471
  12. O-RING NSN 5331-01-358-6583 P/N 912135 PIECE 9 · 190460 · 190460 · 912135 PIECE 9
  13. O-RING NSN 5331-01-358-6581 P/N RM0096-24 · A3.230.148REF-4 · RM0096-24 · A3.230.148REF-4
  14. O-RING NSN 5331-01-358-1902 P/N MS9386-109 · MS9386-109 · MS9386-109 · SAE-AS9386
  15. O-RING NSN 5331-01-356-7219 P/N A3144316 · A3144316 · A3144316 · 447144018909
  16. O-RING NSN 5331-01-356-2446 P/N F375B120ZZZ · K-3621-464 ITEM 4 · F375B120ZZZ · F-375-B-120-ZZZ
  17. O-RING NSN 5331-01-356-1991 P/N MS29512-234 · MS29512-234 · SAE-AS29512 · MS29512-234
  18. O-RING NSN 5331-01-355-8801 P/N MS9386-150 · MS9386-150 · SAE-AS9386 · MS9386-150
  19. O-RING NSN 5331-01-355-8328 P/N MS9386-107 · MS9386-107 · MS9386-107 · SAE-AS9386
  20. O-RING NSN 5331-01-355-4807 P/N C-16891-2 · R-16881 PIECE 53 · C-16891-2 · R-16881 PIECE 53
  21. O-RING NSN 5331-01-355-2708 P/N MS9385-28 · MS9385-28 · SAE-AS9385 · MS9385-28
  22. O-RING NSN 5331-01-354-1088 P/N 4KK323 · 4KK323 · 6V-5050 · 116-9880 REF16
  23. O-RING NSN 5331-01-354-0240 P/N MS9386-173 · MS9386-173 · MS9386-173 · SAE-AS9386
  24. O-RING NSN 5331-01-354-0238 P/N MS9386-031 · MS9386-031 · MS9386-031 · SAE-AS9386

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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