MG Chemicals RTV106 High-Temperature Red Silicone Sealant, 85ml Tube

Professional-grade high-temperature silicone sealant for electronics, industrial, and automotive applications. MG Chemicals RTV106 is a one-part, moisture-curing red silicone sealant that delivers outstanding high-temperature performance and chemical resistance. This versatile sealant bonds, seals, and insulates in demanding environments where standard adhesives fail — making it the go-to choice for electronics encapsulation, gasket making, and high-heat sealing applications.

Product Specifications

Key Features & Benefits

• High-Temperature Resistance — Withstands continuous use up to 260°C and intermittent peaks to 315°C
• One-Part Formula — No mixing required; ready to use straight from the tube
• Moisture Cure — Cures at room temperature using ambient humidity — no heat or UV required
• Excellent Adhesion — Bonds to metals, glass, ceramics, and most plastics without primer
• Flexible After Cure — Absorbs vibration and thermal cycling stress without cracking
• Chemical Resistance — Resists oils, fuels, and many solvents
• Electrical Insulation — Suitable for electronics encapsulation and PCB protection

Ideal Applications

• Electronics encapsulation and component potting
• High-temperature gasket making and replacement
• Oven, furnace, and exhaust system sealing
• PCB component sealing and environmental protection
• Automotive engine, manifold, and exhaust applications
• Industrial equipment sealing and bonding
• Sensor and connector sealing in high-heat environments

Application Instructions

• Clean surface — must be dry and free of oils, dust, and contaminants
• Apply bead and tool to desired shape within working time
• Tack-free in approximately 1 hour at room temperature
• Full cure in 24 hours; higher humidity accelerates cure
• Avoid contact with copper or copper alloys during cure (acetoxy off-gassing)

Frequently Asked Questions

What is the maximum temperature RTV106 can withstand?
RTV106 is rated for continuous use from -65°C to +260°C (-85°F to +500°F), with intermittent peak resistance up to +315°C. It maintains flexibility and adhesion across the full temperature range.

Does RTV106 require mixing or special equipment to apply?
No — it is a one-part formula that cures with ambient moisture at room temperature. No mixing, heat, or UV light is required. Simply apply from the tube and allow to cure.

Is RTV106 safe to use on electronics?
Yes, with one caution: RTV106 uses acetoxy cure chemistry, which releases acetic acid (vinegar smell) during curing. This can corrode copper and copper alloys. Allow full cure before powering electronics, and avoid direct contact with bare copper traces during the cure period.

What surfaces does RTV106 bond to?
It bonds well to metals, glass, ceramics, and most plastics without primer. Surface must be clean and dry for best adhesion.

How does the 85ml tube differ from the 300ml cartridge version?
The 85ml tube is ideal for bench-top, repair, and low-volume applications. The 300ml cartridge (RTV106-300mL) is designed for higher-volume production use with a standard caulk gun.

MG Chemicals — Manufacturer of specialty chemicals for electronics manufacturing, including conformal coatings, soldering products, cleaners, and adhesives.