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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 5331-01-371-9730 P/N 375S64X8 · Y-375S64X8 · 375S64X8 · 375S64X8
  2. O-RING NSN 5331-01-371-2034 P/N ACFT. · S11732-223 · ACFT. · S11732-223
  3. O-RING NSN 5331-01-370-6918 P/N 1551AS125-15 · 2829-8 · NR-5000-3CP · NR-5000-3CP
  4. O-RING NSN 5331-01-370-1083 P/N 56654109-002 · 56654109-002 · 56654109-002 · 94647-991
  5. O-RING NSN 5331-01-369-1886 P/N MIL-DTL-25988/3 · MIL-R-25988/3 · M25988/3-037 · 2-037L1223-60
  6. O-RING NSN 5331-01-368-9527 P/N 262329 · 262329 · 262329 · 262329
  7. O-RING NSN 5331-01-368-6390 P/N CV152397D · 5P-0908 · 5P0908 · 813445
  8. O-RING NSN 5331-01-368-6198 P/N 12346400 · 5-469-E810-80 · EM1623 1088-3103 · 5-469 E1267-80
  9. O-RING NSN 5331-01-368-5635 P/N 671-00035 · 671-00035 · 671-00035-0 · SYQ5305
  10. O-RING NSN 5331-01-368-4665 P/N 938434663U01 · 2-239V747-75 · 938434663U01 · 938434663U01
  11. O-RING NSN 5331-01-368-3928 P/N H00414 · 19000-53610-6 · 19000-53610-6 · 19000-51-369
  12. O-RING NSN 5331-01-368-2509 P/N 1357369 · 51790-2 · N51790-2 · 1357369
  13. O-RING NSN 5331-01-368-0473 P/N 920-230 PIECE 17 · 52567A123 · 52567A123 · 920-230 PIECE 17
  14. O-RING NSN 5331-01-367-6592 P/N A6689.232.142 · A6689.232.142 · LO1278 · PO013676592
  15. O-RING NSN 5331-01-367-4665 P/N 5-622E515-80 · EM163 5-622 · 5-622E515-80 · 12918565-5
  16. O-RING NSN 5331-01-367-2353 P/N PVWH-34-LSAY-CNNN-375 · PVWH-34-LSAY-CF-375 · PVWH-34-LSAY-CNNN ITEM 375 · BULLETIN CF-IB ITEM 375
  17. O-RING NSN 5331-01-367-2352 P/N PVWH-34-LSAY-CNNN-355 · PVWH-34-LSAY-CF-355 · PVWH-34-LSAY-CNNN ITEM 355 · BULLETIN CF-IB ITEM 355
  18. O-RING NSN 5331-01-367-1661 P/N PVWH-34-LSAY-CNNN-380 · PVWH-34-LSAY-CF-380 · BULLETIN CF-IB ITEM 380 · PVWH-34-LSAY-CNNN ITEM 380
  19. O-RING NSN 5331-01-367-1660 P/N PVWH-34-LSAY-CF-356 · PVWH-34-LSAY-CNNN-356 · PVWH-34-LSAY-CNNN ITEM 356 · BULLETIN CF-IB ITEM 356
  20. O-RING NSN 5331-01-367-1168 P/N 0337087 · 0337087 · 337087 · 337087
  21. O-RING NSN 5331-01-366-4814 P/N 5497507-2 · 5497507-1 · 5497507-1 · 2-216KB163-90
  22. O-RING NSN 5331-01-365-9386 P/N 12399F18-456C · MS28775-1026 · MS28775-1026 · 12399F18-456C
  23. O-RING NSN 5331-01-365-8790 P/N GS918600 · 2002AS809-1 · 3356AS809-1 · GS918600
  24. O-RING NSN 5331-01-365-8149 P/N 5-547E515-80 · 5-547E515-80 · E515 5-547 · 12918565-4

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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