2 x Teflon self-sealing coupler seals that sit between the cooling nut and the brass self-sealing couplers for the Grainfather GF30 Conical Fermenter.

Does not include couplers, these are available separately here

When fitting these the best method is to do so when the fermenter is empty.

Lie the fermenter on its side so that you can easily position into place and then screw the coupler in.

This will prevent the o-ring from falling out of position as it is very easy to crush these parts during fitment.