I have a Canon WP-DP34 for a Canon G12 camera.
I want to replace the O ring in the housing.
I purchased one off eBay but it is a smaller diameter to the one that was supplied with the housing.
AFAIK the proper OEM Canon part is yellow.
My replacement O ring is black and smaller diameter than the orange O ring that came with the housing.
The small diameter black O ring when tested at 2m in the swimming pool is OK and does not leak.
Please can someone tell me what diameter the Canon O ring is in millimetres.