SeamerMate Gutter Sealant is a non-corrosive, single-component silicone coating and encapsulating compound that functions as an adhesive and/or sealant that develops bonds to most common substrates without primer. This product is designed for use in gutter applications, under decks, patio covers, and carports. It provides a permanent seal for installing and repairing rain-carrying systems. This 3 oz tube is ideal for repairing damaged or leaking gutters and contains enough sealant for 6 connections. This ready-to-use single-component compound is a high-solid, low-odor material, which cures to a low-modulus, flexible and durable rubber-like solid. Silicone based sealant used to seal gutter connections Semi-self leveling with strong holding power High-solid, low odor material is VOC compliant in all 50 states and Canada