Do you have replacement valves, screws and O-rings? Mark December 30, 2017 01:58 Updated Follow We sure do! Email us your name, order number, and shipping address and we'll take care of you. Related articles What is the extra O-ring, valve and screw for? Do you have replacement snorkel tubes available if mine breaks? How do I decide which size mask to order? How do I avoid fogging my mask? Cleaning your mask Comments 0 comments Please sign in to leave a comment.