illbruckmaking it perfect. Description GS300 is a gun grade, acetoxy cure, low modulus glazing silicone which forms a flexible and durable weather tight seal. It can be used for all classical glass and glazing applications. Colour Translucent, white, aluminium, grey and black Packaging 310 ml cartridge (20 per carton) Environmental Considerations The use of GS300 in the correct application will give an airtight seal in conformity with the requirements laid down in Approved Document L of the Building Regulations for England and Wales. Technical Information Characteristic Standard Composition Specific Gravity Consistency Shore A Hardness Skin Forming Time Tack Free Time Cure Rate Tensile Strength Modulus at 100% Elongation Elongation at Break Movement Capability Elastic Recovery Application Temperature Service Temperature Storage Shelf Life acetoxy cure silicone sealant 1.02 non-sag 20 20 minutes Approximately 30 minutes 2-3 mm/1st day 0.6 N/mm2 0.35 N/mm2 250% 25% 95% +5°C to +40°C -40°C up to +180°C Store in shaded dry conditions between +5°C and +25°C. 18 months when stored as recommended in original unopened containers. Necessary Tools • Cartridge gun and sharp knife. Protective Equipment Use in well ventilated conditions and ensure all recommended protective equipment is worn during handling & use of this product. For full recommendation, refer to safety data sheet. Usage / Purpose GS300 is a high performance glazing silicone which forms a flexible and durable weathertight seal. It can be used for: all classical glazing joints including cap beads; shop windows, display cases, etc.; conservatories and greenhouses; and glass panels. Key Benefits • Meets the requirements of ISO 11600 G-25LM • Excellent adhesion to most glazing and frame materials • Wide service temperature range: -40°C to +180°C • Accommodates joint movement up to 25% • Suitable for sanitary applications • Solvent free

Glazing Silicone Priming • GS300 has excellent primerless adhesion to many typical construction materials, including: glass, tiles, ceramics, enamel, varnished or painted wood and some plastics. For special situations, or if in doubt, please contact tremco illbruck Technical Services Department to discuss your requirements. Joint Design Considerations • Joint design to be in accordance with BS 6093. • For the purposes of joint width calculation in BS 6093, the MAF of GS300 is 25% • Width to depth ratio of GS300 should be 2:1 • The minimum contact area with any substrate (including for fillet...