Do you have replacement valves, screws and O-rings? Nic September 20, 2019 05:22 Updated Follow We sure do! Send an email to us here with your name, order number and shipping address. We'll take care of the rest. 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 avoid fogging my mask? Proper Storage How do I decide which size mask to order? Comments 0 comments Please sign in to leave a comment.