EIGTWEN 170g RTV Silicone Gasket Maker, Red, Heat-Resistant Sealant

Some repairs need a formed-in-place seal that follows the joint, others call for a pre-cut gasket. EIGTWEN 170g RTV Silicone Gasket Maker is designed for sealing and damping around automotive components. Its red silicone formula resists heat, oil and water. Apply it to a clean joint to help seal gaps and prevent leaks.

Everyday use

Use this RTV sealant on automotive, motorcycle and marine engine components, as well as cylinders, gearboxes, axles, pumps, compressors, oil pans and thermostats. It is also suited to static sealing in hardware, mechanical engineering, electronics and chemical-industry equipment. That range makes it useful for repair work involving different types of joints, rather than a single component or vehicle.

The sealant forms a thin, continuous layer on the joint surface. Once cured, it becomes a flexible rubber-like band that can fill air holes and scratches. It is intended for gasket-sealed applications and can replace cork, felt, rubber and paper gaskets. For a practical application, clean the mating surfaces to remove oil, dust and other residue, spread the sealant evenly over the area to be sealed, then assemble the parts. Apply pressure during curing so the material can fill the joint.

Spec sheet

• Type: RTV silicone gasket maker and sealant
• Colour: Red
• Package size: 170g
• Temperature range: -60 to 300 °C
• Manufacturer part number: MF-USQC-0844

The formula is described as resistant to water, steam, antifreeze, oil and gear oil, and is designed to work in conditions involving heat, pressure and vibration. These properties support sealing across a variety of automotive joints and equipment applications. The curing time is 10–30 minutes at a room temperature of 25 °C, actual curing time varies with the conditions during application.

Why it’s worth it

A formed-in-place seal can be useful when the repair calls for material that follows the joint rather than a separate pre-cut piece. This product’s flexible cured finish and stated resistance to automotive fluids make it relevant for sealing jobs on engines, transmissions, pumps and related components. Its application also extends beyond vehicles to static equipment seals, giving it uses in both automotive maintenance and mechanical repair.

The key to a sound application is careful surface preparation and even coverage. Removing oil and dust first helps the sealant sit directly on the joint, while pressure during curing supports contact across the mating surfaces. For a workshop repair, this process offers a practical way to form a seal around a component and address gaps or surface marks as part of the assembly.

Before you decide

What types of applications is this gasket maker designed for? It is intended for gasket sealing on automotive, motorcycle and marine engines, including components such as gearboxes, pumps, oil pans and thermostats. It is also described for static sealing on equipment used in hardware, mechanical engineering, electronics and chemical industries.

How should it be applied? Clean the surface with a suitable cleaning solution, apply the sealant evenly to the area being sealed, assemble the parts and maintain pressure during curing so the joint is filled.

How long does curing take? The stated curing time is 10–30 minutes at 25 °C. Conditions during curing can change the time required.

Is it worth it?

EIGTWEN’s red RTV silicone gasket maker is suited to repair and maintenance tasks that need a flexible, formed-in-place seal across automotive components or static equipment joints. Its broad application range, resistance to heat and common automotive fluids, and ability to form a cured rubber-like layer make it a practical choice for sealing work where clean preparation and careful assembly are part of the job.