Mapesil 300°C

MAPESIL 300°C – Acetic Silicone Sealant for High Temperatures

MAPESIL 300°C is an acetic silicone sealant specifically formulated to withstand high temperatures. With excellent adhesion and flexibility, it accommodates movements of up to 20% while maintaining durability under thermal stress. Resistant up to 300°C, it is ideal for sealing joints in industrial and domestic applications exposed to heat, such as ovens, chimneys, flues, barbecues, and heating systems.

Key Features & Benefits

• Heat-resistant up to 300°C

• Accommodates joint movements up to 20%

• Strong adhesion to a variety of substrates

• Black colour finish for discreet sealing

• Easy application with extrusion gun

• Suitable for industrial and domestic high-heat environments

Technical Data

• Movement in Service: 20%

• Modulus of Elasticity (100% elongation): 0.60 N/mm²

• Shore A Hardness: 20

• Workability Time: ~6 min (+23°C, 50% R.H.)

• Colour: Black

• Application: Extrusion gun

• Consumption: ~3.0 linear metres per 300 ml cartridge (10x10 mm section)

• Packaging: 300 ml cartridge

Downloads 

Data Sheet

Safety Sheet

EPD

GEV