Here is a brand new OEM O-Ring for your Canon WP-DC200s waterproof case. This will keep your case from leaking, don't let the O-Ring get old or it will lose shape and elasticity and the case will leak and destroy your camera!
This O-Ring will fit the following models:
WP-DC70 (A30, A40)
Please email us if you don't see your part listed in the store.