MG Chemicals RTV108-300mL Clear Silicone Sealant, 300ml Cartridge
MG Chemicals RTV108-300mL Clear Silicone Sealant, 300ml Cartridge
MG Chemicals RTV108 is a one-part, moisture-cure clear silicone adhesive sealant that cures at room temperature to a flexible, durable elastomer. The 300ml cartridge format is ideal for production and high-volume applications requiring precise dispensing via standard caulking guns. RTV108 bonds to glass, ceramics, most metals, and many plastics, making it a versatile choice for electronics potting, gasketing, sealing, and general-purpose bonding in industrial and electronics manufacturing environments.
Sold individually (300ml cartridge).
Specifications
| SKU | RTV108-300mL |
|---|---|
| Brand | MG Chemicals |
| Type | One-part, moisture-cure RTV silicone |
| Color | Clear |
| Volume | 300ml cartridge |
| Cure System | Moisture cure (acetic acid by-product) |
| Operating Temperature | -65°C to +204°C (-85°F to +400°F) |
| Substrates | Glass, ceramics, metals, most plastics |
| Application | Potting, gasketing, sealing, bonding, encapsulation |
Frequently Asked Questions
What does "RTV" mean and how does RTV108 cure?
RTV stands for Room Temperature Vulcanizing — meaning the silicone cures at ambient temperature without requiring heat. RTV108 is a one-part moisture-cure silicone, meaning it cures by reacting with atmospheric moisture. It releases acetic acid (vinegar smell) during cure, which is normal. Full cure typically takes 24–72 hours depending on temperature, humidity, and section thickness.
What surfaces does RTV108 bond to?
RTV108 bonds well to glass, ceramics, most metals (aluminum, stainless steel, copper), and many plastics. It may not adhere well to polyethylene, polypropylene, or PTFE without a primer. For best adhesion, surfaces should be clean, dry, and free of oils or contaminants before application.
Is RTV108 suitable for electronics applications?
Yes. RTV108 is widely used in electronics manufacturing for potting, encapsulation, gasketing, and sealing PCBs and electronic assemblies. Its wide operating temperature range (-65°C to +204°C) and flexible cured properties make it resistant to thermal cycling, vibration, and moisture ingress — key requirements for electronics protection.
What is the difference between the 300ml cartridge and the 85ml tube?
The 300ml cartridge (RTV108-300mL) is designed for use with a standard caulking gun and is ideal for production environments or applications requiring larger volumes. The 85ml tube (RTV108-85mL) is a hand-squeezable format better suited for small repairs, prototyping, or low-volume applications. Both contain the same RTV108 clear silicone formulation.
