J-B Weld Hi-Temp Red Silicone - 31314

J-B Weld Hi-Temp Red Silicone - 31314

Restore a durable high-heat gasket seal with this universal/spec-match J-B Weld Hi-Temp Red Silicone - 31314. This RTV silicone gasket maker and sealant is designed for mechanical assemblies that see elevated temperatures and need a tough waterproof seal.

31314 is J-B Weld Hi-Temp Red Silicone, a universal/spec-match gasket maker used when a high-heat sealing material is needed on compatible mechanical joints and flanges. It is commonly used where ordinary sealants shrink, crack, or fail under continuous heat exposure.

Compatibility: Compatible high-temperature gasketing and sealing applications on metal and other approved surfaces where RTV silicone is the correct service material.

Please confirm the intended application, surface material, color, and cure profile before ordering.

Is it time to replace?

• Common Symptoms: A gasket surface that seeps after reassembly, heat-related seal failure, or a mechanical joint that needs a formed-in-place silicone seal.
• Visible/Sensory Cues: Cracked or missing red silicone, hardened gasket residue, light fluid seepage, or a flange surface that no longer seals evenly.

Pro Tip: Apply a consistent bead around bolt holes and let the silicone skin as directed before final tightening so the seal is not squeezed out unevenly.

Technical Specifications