ThreeBond 1211 Engine Silicone Gasket Maker – 3.5 oz | TB1211 Trusted by OEMs. Proven by mechanics. ThreeBond 1211 is a semi-hardening, high-performance silicone-based gasket sealer that provides a flexible yet durable bond for engine components. Designed for applications requiring a reliable seal that won't crack under temperature changes or vibration, this gasket maker is ideal for motorcycles, ATVs, UTVs, and powersports vehicles. TB1211 is frequently used in sealing valve covers, crankcases, timing covers, and other engine areas where traditional gaskets may fail or be too rigid. It cures to a semi-dry consistency, allowing easy disassembly and cleanup during future maintenance.
