ALSEAL AS-207 Weatherseal Sealant is a single-component, non-slumping, high-performance, 100% neutral-cure silicone sealant formulated with a calcium carbonate filler system. It is designed to provide reliable adhesion and durability across a wide range of glazing, weather sealing and trade applications.

Its permanently flexible formulation accommodates joint movement of up to ±50% while maintaining a weatherproof seal. AS-207 offers excellent resistance to weathering, UV radiation, vibration, moisture, ozone, temperature extremes, airborne pollutants, and many cleaning detergents and solvents. Its matte finish provides a distinctive appearance for sealing applications.

The formulation is also free from APEO, formaldehyde and phthalates.

Specifications

Curing System: Moisture curing, neutral
Density: 1.33 g/mL
Slump (ASTM D2202): <1 mm
Ultimate Tensile Strength (ASTM D412): 1.3 N/mm²
Elongation (ASTM D412): 360%
Movement Capability (ASTM C719): ±50%
Shore A Hardness (ASTM C661): 33
Adhesion-in-Peel (ASTM C794): >35 N
VOC Content (USEPA Method 24): 45.54 g/L
VOC Content (USEPA Method 310): 2.4%

Features

±50% movement capability
Permanently flexible
Suitable for indoor and outdoor applications
Matte finish
APEO-, formaldehyde- and phthalate-free

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AS-207 Weatherseal Sealant

Overview

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