XMSJ Ultra High Temperature RTV Silicone Gasket Maker

Meet the XMSJ Ultra High Temperature RTV Silicone Gasket Maker—the ultimate sealant built to endure extreme heat, constant movement, and demanding automotive, plumbing, and appliance applications.

Experience a tough, flexible seal that won’t chalk, crack, or shrink, and that stays non-slumping in tight gaps even as parts move. This gasket maker delivers reliable adhesion across a wide range of substrates, including clean metal, glass, ceramic, most non-oily woods, painted surfaces, and many plastics—making it a versatile choice for professionals and DIY enthusiasts alike. Note: not suitable for aquariums.

Engineered for performance, it provides a robust barrier against leaks in high-temperature environments. Apply with a standard caulk gun to create a durable gasket that stands up to harsh conditions in engines, exhausts, and high-heat housings. The red liquid sealant comes in a 10.1 oz tube, ready for quick repairs and long-lasting sealing projects.

Key benefits

• Tough, flexible seal that resists chalking, cracking, and shrinking; stays non-slumping in tight gaps and with movement.
• Wide adhesion to clean metal, glass, ceramic, most non-oily woods, painted surfaces, and many plastics.
• Extreme heat resistance with continuous operation up to 600°F (315°C).
• Easy to use via a standard caulk gun.
• Durable, temperature-tolerant gasket suitable for plumbing, automotive, and appliance projects.
• Not for aquariums.

Technical specifications

• Color: Red
• Sealant type: RTV silicone gasket maker
• Volume: 10.1 oz (10.1 fl oz) tube
• Continuous operating temperature: Up to 600°F (315°C)
• Application: Caulk gun required
• Ideal for: Plumbing, automotive, and appliance sealing
• Not for: Aquariums

Add the XMSJ Ultra High Temperature RTV Silicone Gasket Maker to your toolbox and secure reliable, heat-tolerant seals that stand the test of time.