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Not compatible. 88g threaded CO2 cartridge and 16g threaded CO2 cartridge do not share a mating thread, so there is no adapter between them; fit the part that matches your hardware. Sealing method, the real-world trap, and the exact part to buy.

Updated 05 September 2026.

Bench / Fittings / Join

Connect 88g threaded CO2 cartridge to 16g threaded CO2 cartridge

How to join 3/8"-24 UNF (soda-maker 88g) and 3/8"-24 UNF, and what stops it leaking.

End A88g threaded CO2 cartridge (3/8"-24 UNF (soda-maker 88g))Will not connectEnd B16g threaded CO2 cartridge (3/8"-24 UNF)

Not compatible. 88g threaded CO2 cartridge and 16g threaded CO2 cartridge do not share a mating thread, so there is no adapter between them; fit the part that matches your hardware.

The two ends

End A
88g threaded CO2 cartridge (3/8"-24 UNF (soda-maker 88g))
End B
16g threaded CO2 cartridge (3/8"-24 UNF)
A seals on
a pierced or valved seat in the holder against the cartridge neck
B seals on
a pierced or valved seat in the holder against the cartridge neck
Part needed
matched replacement, no adapter exists

The part to buy

An 88 gram and a 16 gram cartridge can share the 3/8-24 UNF thread but differ greatly in length, so a holder made for a short 16g may not physically clear an 88g cartridge even if the thread matches. Fit the holder that accepts your cartridge length and thread.

Thread match alone is not enough with cartridges; the holder must be long enough for the cartridge body. Check both the thread and the cartridge length printed on the pack before buying a holder or a box of cartridges.

Related connections

Questions and answers

Connect 88g threaded CO2 cartridge to 16g threaded CO2 cartridge?

Not compatible. 88g threaded CO2 cartridge and 16g threaded CO2 cartridge do not share a mating thread, so there is no adapter between them; fit the part that matches your hardware.