black rtv silicone adhesive sealant
Products Description
SC-1305 is a one-component, black semi-flowing, room-temperature curing, bonding and sealing modified silicone rubber, solvent-free. SC-1305-5 has moderate viscosity and good extrudability. It has excellent adhesion to metals, plastics, ceramics, glass, etc., and no primer is required. It is applicable to fields that require sealing, blocking and leakage prevention, as well as "three-proof" measures.
| Item | SC - 1305 |
|---|---|
| Properties Before Curing | |
| Appearance (Visual Inspection) | Black Semi - Fluid Liquid |
| Extruded Chemical Composition | Polysiloxane |
| Tack - free Time (min, GB/T 13477.5 - 2002) | ≤30 |
| Viscosity (GB/T 2794 - 1995, mPa·s) | 15000±5000 |
| Properties After Curing (7 days, 23±2℃/50±5%) | |
| Appearance (Visual Inspection) | Black Elastomer |
| Specific Gravity | 1.02±0.05 |
| Hardness (GB/T 531.1 - 2008, A) | 30±5 |
| Elongation at Break (GB/T 528 - 2009, %) | ≥200 |
| Shear Strength (GB/T 7124 - 2008, MPa) | ≥1.0 (Al/Al Adhesive Failure); ≥1.0 (PC/PC Adhesive Failure) |
| Water Absorption (GB/T 1034 - 1998, Soaked in Water at 25℃ for 24h, %) | ≤0.01 |
| Volume Resistivity (GB/T 1410 - 2006, Ω·cm) | ≥2.0×10¹⁴ |
| Dielectric Strength (IEC 60243 - 1, kV/mm) | ≥17 |
| ROSH 2.0 | Pass |
Our advantages
Weather and UV resistance
This black silicone sealant has excellent weather resistance and can work stably for a long time under extreme weather conditions. Whether it is high temperature, low temperature, humid environment, or strong ultraviolet radiation, it can effectively maintain its performance. Especially in outdoor applications, black silicone sealant can effectively prevent common sealing materials from aging, discoloration or cracking under sunlight exposure, ensuring a long-lasting and reliable sealing effect.
High temperature stability
This sealant has good long-term use stability in high temperature environments. Its operating temperature range is usually -40℃ to +180℃, and some specific formulas can withstand high temperatures up to +300℃. This makes it particularly suitable for sealing needs in high temperature environments such as automotive engine compartments, electrical equipment, building roofs, pipelines, etc., and can maintain good sealing performance and structural stability in extreme temperature fluctuations.
Good bonding and sealing performance
Black silicone sealant has good adhesion to a variety of substrates (such as metal, glass, ceramics, plastics, rubber, etc.). It can adhere firmly to different surfaces and prevent the penetration of foreign substances such as air, moisture, dust, etc. In addition, the sealing performance provided by the sealant can be sustained and stable, especially in long-term use, it can still maintain excellent sealing effects, ensuring that equipment and components are not affected by the external environment.
Chemical corrosion resistance
Silicone sealants have good chemical corrosion resistance and can effectively resist the erosion of a variety of chemicals, including acids, alkalis, oils and solvents. This makes the sealant particularly suitable for use in chemical plants, oil facilities, automobile engines and other applications that need to prevent the intrusion of chemicals.
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