Bondloc B518 Flexible Gasket Sealant

The Bondloc B518 Flexible Gasket Sealant is a red, smooth paste designed for creating durable, flexible gaskets on engines and machinery. This modified urethane acrylate sealant cures when confined between parts to form a tough, flexible seal in place, offering an instant low pressure seal ideal for demanding automotive and mechanical applications. The thick paste formulation applies easily and is particularly effective for fuel and water pumps, split crankcase assemblies, gearbox covers, and engine timing cam covers. Its also suitable for air compressor end caps, engine thermostats, pump couplings, and fuel tanks on smaller equipment including chainsaws and lawn mowers. This gasket sealant excels at dressing existing gaskets and spacers, providing enhanced sealing performance across a wide temperature range from 55°C to 150°C. With a fixture time of up to 12 hours without activator or under 2 hours with activator, the B518 offers flexibility in assembly timing whilst delivering reliable long term performance. The 0.5mm gap fill capability and high viscosity ensure effective sealing on irregular or slightly damaged surfaces. Features and Benefits • Forms tough, flexible gaskets in place for reliable long term sealing • Instant low pressure seal for quick assembly work • Operates reliably across temperatures from 55°C to 150°C • High viscosity paste fills gaps up to 0.5mm for irregular surfaces • Compatible with fuels, water, and oils in automotive applications Specifications Gasket Type Gasket Sealant Size ml 50 Resin Modified Urethane Acrylate. Colour Red Paste. Fixture Speed No Activator Up to 12 hours. Fixture Speed With Activator 3,500,000 cps. Gap fill 0.5 mm. Flash point 100°C. Shelf life 12 months 20°C. Specific gravity 1.13. Max operating temp 55°C to 150°C. Cured Performance Full Cure Time 12 hours. Tensile strength 8 Nmm2. Static Shear strength 12.5 Nmm2....Read More...»»