Homepage Article RTV Silicone Liquid Gasket for Powertrain & Flange Sealing | TB1215

RTV Silicone Liquid Gasket for Powertrain & Flange Sealing
ThreeBond 1215

04/08/2025

ThreeBond 1215 is a one-component RTV silicone liquid gasket designed for powertrain, engine and flange sealing applications. It offers excellent resistance to oil, heat, vibration and automotive fluids while curing at room temperature.

When it comes to sealing solutions, reliability and durability are key. ThreeBond 1215 is a one-component silicone-based liquid gasket designed to meet these exact demands. This innovative product cures at room temperature (RTV), transforming into a flexible, rubber-like seal that stands up to vibration and shock with ease.

What sets ThreeBond 1215 apart is its outstanding resistance to heat, automotive oils, and various fluids, making it ideal for high-temperature applications. Whether you’re working on engine components or other machinery exposed to extreme conditions, this liquid gasket ensures a tight, long-lasting seal that won’t fail when you need it most.

If you’re looking for a dependable, easy-to-use sealing solution that combines elasticity with robust protection, ThreeBond 1215 is a smart choice for professionals.

Features

TB1215

Room Temperature Vulcanization Silicone

TB1215 is a solvent free oxime type silicone.
Can be cured by moisture, at room temperature.
Can be used as a sealant for powertrain and flange.
Excellent resistance to vibration, shock, heat, automotives oils and fluids

Viscosity75 Pa.s

ColourGrey

HardnessA50 (Shore)

Service temperature-60 to +200°C (250°C)

Applications

The powertrain refers to the group of components in a vehicle that generate power and deliver it to the wheels. It typically includes the engine, transmission, driveshafts, differentials, and the final drive (such as axles). The powertrain is essentially responsible for converting the energy from fuel into mechanical motion, enabling the vehicle to move.

Powertrain components operate under harsh conditions : high temperatures, mechanical vibrations, pressure fluctuations, exposure to oils, fuels, and other fluids. Proper bonding and sealing are critical for several reasons:

Prevent Fluid Leakage : The engine, transmission, and other powertrain parts contain oils, coolants, and lubricants that must be securely contained to maintain performance and prevent environmental contamination. Seals and gaskets prevent leaks that could cause component damage or failures.
Maintain Pressure Integrity : Many powertrain components rely on maintaining certain pressures (e.g., in the transmission or turbocharger systems). Effective sealing ensures that these pressures are stable, contributing to optimal operation and efficiency.
Absorb Vibrations and Shocks : Bonding agents and flexible seals can help absorb vibrations and shocks that occur during vehicle operation, protecting delicate components from wear and tear and improving the longevity of the powertrain.
Resist Harsh Environments : Powertrain seals and adhesives must withstand exposure to high temperatures, automotive oils, chemicals, and mechanical stress without degrading.

F.A.Q

01. What is TB1215 used for ?

ThreeBond 1215 is mainly used to seal flange and powertrain components such as on the engine or the transmission.

Oil pan
Timing cover
Water pump
Gearbox
Differential
Engine flange

02. Is TB1215 resistant to engine oil ?

Yes, it is resistant to engine oil, as well as many other automotive fluids such as gear oil.

03. What temperature can TB1215 withstand?

With temperature resistance up to +250°C, TB1215 ensures long-lasting reliability in demanding engine environments exposed to intense heat.

04. How long does TB1215 take to cure?

The curing time of a silicone such as TB1215 depends largely on application conditions, including temperature, humidity, and post-application processes. Therefore, the exact curing time cannot be guaranteed.

05. On which materials can TB1215 be used?

TB1215 can be used on various materials, especially metals such as aluminum and steel. It provides excellent adhesion on metal surfaces commonly used in automotive and industrial applications. For other materials, adhesion performance should be evaluated depending on the surface condition and application requirements.

06. What is a RTV silicone?

RTV silicone (Room Temperature Vulcanizing silicone) is a silicone material that cures at room temperature to form a flexible, durable elastomer. It is commonly used for sealing, bonding, and protecting components thanks to its excellent resistance to heat, moisture, and environmental conditions.