How waterproof is my Quantum?
Your Quantum is splash-proof. It is sealed at the lens and at the body with Viton o-rings. It can be washed, taken into the shower/bath and can handle light submersion with ease. However, extended use underwater is not recommended.
What should I use to lubricate the o-rings?
We use Nano-oil and silicone based lubricants when assembling the Quantum. Due to the increased chemical resistance of its Viton o-rings, you can use whatever lubricant you have on hand without adverse effect.