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Heat-Resistant Butyl Rubber Sealant Ideal for Aluminum-Glass Bonding. Strong Adhesion: Outstanding seal ability and adhesion to aluminum, glass, and stainless steel. Non-Hardening Formula: Non-dusting, non-hardening, and non-loss of adhesion for long-lasting seals. International Certified: Certified by National Glass Testing Center to meet all international requirements. Customizable Packing: Special packing available according to the buyer's specific demand. Versatile Application: Ideal for first sealing of insulating glass; compatible with Thiokol and silicon sealants. Easy Application: Single-component sealant without flux; extrude with special hot melt extruder.