Arc Heat Resist Silicone Black 300ml

ARC HEAT RESISTANT SILICONE is a black high modulus, reactive curing silicone sealant specifically designed for
high temperature applications. It cures quickly to reduce dirt pick up. It remains permanently flexible, forming a
weathertight rubber-like seal.

Benefits
• Excellent temperature resistance: remains flexible from -50 – +300oC
• Extremely low dirt pick up. – 1 hour tack free.
• Excellent adhesion to non-porous surfaces.
• Waterproof seal

Areas For Use
• Multitude of Industrial uses
• As a gasket sealant.
• For joints and assemblies, which must be resistant to high temperatures in ducting, metal chimneys,
industrial/domestic ovens, heating appliances.

Limitations
• Do not use on porous surfaces such as brick, concrete and stone.
• Do not use in conjunction with bitumen, lead or Asphalt.
• Not for use on substrates that may bleed oils, solvent or plasticisers.
• Do not use on soft metals such as lead or brass.
• On temperatures above 285oC, slight discolouration may occur, but the joint will maintain its integrity.
• Do not use above 300oC.

Surface Preparation
All surfaces must be clean, dry and dust free. All loose or flaking surface coatings, and old sealant and mastic
joints, should be removed before application. Highly porous substrates such as new plaster should first be primed
with a dilution of Caulk with water at a ratio of 1:2. Can be applied to slightly damp surfaces.

Application
The surfaces to be must be clean, dry and free from dust, grease and other contaminants. Improve adhesion by
wiping surface with white spirits. Priming is generally not required, although we always advise testing small areas
prior to use.