"MAPESIL 300°C acetic silicone sealant for high temperatures, black sealant for ovens, chimneys, flues, and heating systems, resistant up to 300°C."

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Mapesil 300°C

Name: Mapesil 300°C
Brand: Mapei
SKU: mapesil300c
Price: 204.32 GBP
Availability: InStock
Rating: 5 (27 reviews)

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MapeiSKU: MAPESIL300C

Size: 300ml Cartridge (Box of 12)

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£204.32 £234.97

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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

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What Our Customers Say

Very good 4.7/5

Exceptional Advice & Support

Hands down in all of my reviews I've done in 21+ years, Clever Shield Coatings is one I'll always remember as the staff are friendly & passionate about their job - looking out for the customer and getting the job done right first time.

Sunny

Verified customer

Fast, friendly and reliable…

Fast, friendly and reliable. I was able to get my job done quickly and my customer was happy with the prices.

Thanks.

Kamil

Verified customer

Exceptional Advice & Support

We have been using clever shield (dealing with Richard) for over 2 years. They always give good service deliveries on time and even give technical advise when needed.

JAC

Verified customer

Really helpful! great service

Spoke to technical for some advice on the product and it was really helpful, great service

Tina Mansfield

Verified customer

Great company / knowledgeable

What a great company - knowledge about the products, spent lots of time talking me through everything - if only every company was like this one !

Ostler Info

Verified customer

Great company and speedy delivery

Really great company to deal with,excellent customer service,speedy delivery will definitely recommend and use again as a satisfied customer

Del Upson

Verified customer

Great Technical Support

Great technical support and advice on wykamol products would highly recommend this company

Shirley

Verified customer

Highly Recommended

Sandra Dow

Verified customer

Mapesil 300°C

Description

MAPESIL 300°C – Acetic Silicone Sealant for High Temperatures

Key Features & Benefits

Technical Data

Downloads

Payment & Security

Mapesil 300°C

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