OYZMZK Waterproof Sealing Putty, Specifically Designed for Quickly white por | 18 Jul 2026Publisher: OYZMZK. It serves as a hole filler, pipe sealant, wall putty, and waterproof thermal sealant. Green, Eco-Friendly, and Safe: Upgraded formula ensures this waterproof sealing putty is formaldehyde-free and odorless.