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Two seals for the CO2-pressure reducers from Hiwi. They secure the connections between pressure reducer and CO2-cansiter which helps prevent unnessesary CO2-loss.
Please Control the dimensions of your pressure reducer before purchase to make sure you receive the correct size.
For the older pressure reducers, resp. the CO2-nozzle with a slightly tilted case, the redish, soft seal is recommended. The white, hard seal fits the newer CO2-pressure reducers without a tilted border.
Nozzle with and without tilted case
|Seal - soft|
|Outer diameter||17,5 mm|
|Inner diameter||11,5 mm|
|Seal - hard|
|Outer diameter||18 mm|
|Inner diameter||11,8 mm|
Hiwi is a renowned German manufacturer of CO2 pressure regulators. The highest level of quality and a long useful life are in their focus. These high quality standards do not exclude attractive prices, though.
Especially in aquascaping, the addition of CO2 for the plants is something very basic, and thus it is really important to choose good CO2 supplying equipment. Hiwi meets even the highest quality standards in every aspect und is thus the best choice when it comes to CO2 pressure regulators.