J-B Weld Red Hi-Temp RTV 100% Silicone Gasket Maker & Sealant – 85g (3oz) Tube, 1-Hour Set, Heat Resistant Up to 343°C, With Nozzle

J-B Weld Red Hi-Temp RTV Silicone Gasket Maker & Sealant (85g) is a high-temperature sealing solution designed to create strong, flexible, leak-proof gaskets in demanding environments. With a fast 1-hour set time and heat resistance up to 343°C, it’s perfect for automotive and mechanical repairs exposed to extreme heat.

Product Overview

This 100% RTV silicone formula cures into a tough, durable seal that resists cracking, shrinking, and vibration under high temperatures. The bright red compound is engineered for exhaust systems, engines, and high-heat components where standard sealants fail. The included nozzle allows precise application for clean, professional results in tight spaces.

Key Features

• Heat Resistant to 343°C: Designed for extreme temperature applications
• 1-Hour Set Time: Fast curing for quicker repairs
• 100% RTV Silicone: Flexible gasket that won’t crack or shrink
• Heavy-Duty Seal: Withstands vibration, pressure, and thermal stress
• Nozzle Included: Controlled bead application for accuracy

Specifications

• Brand: J-B Weld
• Type: Red Hi-Temp RTV Silicone Gasket Maker & Sealant
• Formula: 100% RTV Silicone
• Size: 85g (3oz) tube
• Set Time: 1 hour
• Heat Resistance: Up to 343°C
• Includes: Application nozzle

Ideal For

• High-temperature engine components
• Exhaust systems and manifolds
• Heavy-duty automotive sealing

Why Choose J-B Weld Red Hi-Temp RTV Silicone Gasket Maker & Sealant?

J-B Weld Red Hi-Temp RTV Silicone Gasket Maker & Sealant is built for extreme heat and demanding repairs. Trusted by mechanics and DIY users, it delivers a long-lasting, flexible seal that survives temperature spikes, vibration, and pressure. When standard sealants fail, this high-temp formula provides reliable professional-grade performance.