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(4 Pack) BrewZilla PPSU Sight Glass O-Ring Kit
KL33824
€2,99
The PPSU Sight Glass uses radial sealing mechanism in order to not leak, even under pressure from a 25w pump. This is a very similar design to the duotight push in fittings that also use two o-rings. Incase one breaks, or leaks, there is another to save the day.