Industrial Silicone Sealants: Choosing the Right Grade for Construction Applications

H2: What Are Industrial Silicone Sealants?

Industrial silicone sealants are elastomeric compounds used to bond, seal, and insulate surfaces exposed to extreme temperatures, moisture, and chemical environments. Unlike acrylic or polyurethane alternatives, silicones retain flexibility from -60°C to +200°C.

H2: Key Grades Explained

H3: Neutral Cure Silicone
Best for sensitive substrates including natural stone, concrete, and metals. Releases alcohol during curing — no corrosion risk. Ideal for structural glazing and curtain wall systems.

H3: Acetoxy (Acid Cure) Silicone
The standard "bathroom" grade — lower cost but releases acetic acid during cure. Unsuitable for marble, cementitious substrates, or electronics enclosures.

H3: High-Temperature Silicone (RTV)
Rated up to 315°C continuous exposure. Used in HVAC ducting joints, exhaust manifold sealing, and industrial oven gaskets.

H2: Selection Checklist

• Substrate type (porous vs. non-porous)

• Continuous operating temperature

• Chemical exposure (oils, solvents, acids)

• Movement accommodation required (% elongation)

• Regulatory compliance (food-grade, fire-rated)

H2: Bewama Sourcing Note
We supply neutral cure and high-temperature grades in 300ml cartridges and 600ml sausage packs, with bulk pallet pricing available for contractors.