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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 5331-01-522-5157 P/N V216-6985937F689 · V216-6985938F689 · AMS-R-83285GR80/AS568-238 · MIL-R-83285GR80/AS568-238 · +2 more
  2. O-RING NSN 5331-01-522-2531 P/N R49388-903G · ML12544698G1 ITEM 79 · R49388-903G · ML12544698G1 ITEM 79 · +2 more
  3. O-RING NSN 5331-01-521-0962 P/N D5000FF ITEM 1 · D5000FF ITEM 1 · AS3581-350 · M83248/2-350 · +2 more
  4. O-RING NSN 5331-01-520-7315 P/N 500001031E · SA75502371 · 500001031E · 500001031E · +2 more
  5. O-RING NSN 5331-01-515-9350 P/N J515CH295X0234H · J515CH295X0234 · SAE J515 CH295X0234H · SAE-J515 · +2 more
  6. O-RING NSN 5331-01-515-1221 P/N 211070237 · 901-6410701-97 · M83485/1-475 · M83485/1-475 · +2 more
  7. O-RING NSN 5331-01-513-8044 P/N 250140 · 250140 · DIN 3771-24,4X3,1-N NBR70 · 250140 · +2 more
  8. O-RING NSN 5331-01-513-6825 P/N DIN 3771-19X2-N MVQ 60 · 950-180 · DIN 3771-19X2-N MVQ 60 · 950-180 · +2 more
  9. O-RING NSN 5331-01-513-6820 P/N 430-205 · DIN 3771-6,4X1,8-N FPM 75 · 430-205 · DIN 3771-6,4X1,8-N FPM 75 · +2 more
  10. O-RING NSN 5331-01-512-7854 P/N 13977PC29 · 13976PC43 · 13973PC30 · 30-0363 · +2 more
  11. O-RING NSN 5331-01-509-7755 P/N NOR008601 · 600419 REV H ITEM 9 · 600419 REV H ITEM 9 · 43-308567 · +2 more
  12. O-RING NSN 5331-01-509-0840 P/N RE65201 · 19-004-1751 · RE65201 · RE65201 · +2 more
  13. O-RING NSN 5331-01-507-4023 P/N 10KP311 · 3664487 · 10KP311 · 121-0145 · +2 more
  14. O-RING NSN 5331-01-507-3946 P/N 564-7067455-F200 · 564-7066613-F188 · H523-7602-F188 · H651-1302-F200 · +2 more
  15. O-RING NSN 5331-01-505-0536 P/N M83461/1-206 · M83461/1-206 · 2111007-299-206 · 211007-299-206 · +2 more
  16. O-RING NSN 5331-01-503-6460 P/N 6394449 FIND 030 · 5793249 FIND 118 · M83248/2-906 · 5793249 FIND 118D4 · +2 more
  17. O-RING NSN 5331-01-503-6153 P/N 027 · 700-027-433C · 999-1110-B-02 REV 4 ITEM 89C · 999-1110-B-01-89C · +2 more
  18. O-RING NSN 5331-01-503-0357 P/N AMS-R-25988 · MIL-DTL-25988/2 · M25988/2-119 · MIL-R-25988 · +2 more
  19. O-RING NSN 5331-01-502-9022 P/N 2 0071-754 · 17218165-0 · 489926 · 2 0071-754 · +2 more
  20. O-RING NSN 5331-01-502-9020 P/N 2 0071-919 · 2 0071-919 · 17218040-0 · 3678603 · +2 more
  21. O-RING NSN 5331-01-502-3301 P/N M2065PC18 · M2066PC18 · 70-3411 · M2066PC18 · +2 more
  22. O-RING NSN 5331-01-502-3284 P/N M2065PC2 · 70-3002 · M2066PC2 · M2066PC2 · +2 more
  23. O-RING NSN 5331-01-501-4323 P/N ST1946-164 · ST1946-164 · ST1946-164 · ST1946-164 · +2 more
  24. O-RING NSN 5331-01-501-4321 P/N ST1946-145 · ST1946-145 · ST1946-145 · ST1946-145 · +2 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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