Primary Seal Butyl Rubber
MGM provides a comprehensive sealing solution for the insulating glass industry with our high-performance Butyl Rubber Sealant and Hot Melt Sealant. These two sealants play distinct, complementary roles in creating durable, long-lasting IGUs. Our Butyl Rubber Sealant serves as the indispensable primary seal. This thermoplastic material is extruded directly onto the spacer in a continuous, uniform bead. Its primary function is to form an immediate, highly effective barrier against water vapor and gas transmission. This prevents the desiccant inside the spacer from saturating and safeguards the integrity of the gas fill (e.g., Argon), which is crucial for maintaining the unit's insulating properties over its entire lifespan.
| Technical Data | ||||
| Colour | Black or Gray | |||
| Heat Resistance | Non-dusting, non-hardening, non-loss of adhesion and non-decomposition in successive 30-hour use between minus 40ºC and plus 130ºC, the highest temperature it can endure being 175ºC | |||
| Specific Gravity | 1.15—1.25g/cm³ | |||
| Shear Strength (aluminum—glass) | ≥0.10MPa | |||
| Tensile Strength (aluminum—glass) | ≥0.80MPa | |||
| Ultraviolet Irradiation | 168hrs, no fog | |||
| Packing | 7kg per paper barrel, diameter being 180mm or 190mm and height 220mm, 28kg/box | |||
- Excellent adhesion with both aluminum, stainless steel and glass
- No cracking or hardening, good temperature resistance, and low moisture permeability
- Compatible with two-part polysulfide, two-part silicone, two-part polyurethane and hot-melt butyl to accomplish dual seal
- Continuous line operation with no breakage/tailing during application
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