Sold! PPS transmitter for shearwater aqualung etc.

[lexvil]

Here is a link to a previous discussion about the o ring

Pelagic Pressure Systems transmitter (FCC ID MH8A) Battery door O-ring size

Does anyone know the correct size of the O-ring used for the PPS transmitter door? I have to do a battery change and want to replace the O-ring along with have a few spare in my save a dive kit.

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