Kafuter K-704: Delivering Durable and Reliable Sealing & Bonding Solutions for Precision Electronics and Appliances

Kafuter K-704: Delivering Durable and Reliable Sealing & Bonding Solutions for Precision Electronics and Appliances

Guangdong Hengda New Material Technology Co., Ltd., a renowned name in the field of adhesives and sealants, is dedicated to providing high-performance solutions through its Kafuter brand. Today, we spotlight one of its star products: the K-704 one-component, room-temperature vulcanizing (RTV-1) silicone rubber. This neutral-cure silicone has become an indispensable engineering material in industries such as electronics manufacturing, automotive components, home appliances, and optical instruments, thanks to its exceptional stability, outstanding electrical insulation, and broad material compatibility.

Superior Performance for Demanding Environments

K-704 is a neutral-cure, one-part silicone rubber that cures at room temperature upon exposure to atmospheric moisture, offering easy application without mixing. The resulting elastomer boasts a range of trustworthy characteristics:

• Broad Temperature Resistance: It remains stable across an extreme temperature range of -60℃ to 250℃, ensuring reliable operation of equipment both in frigid winters and under high-temperature conditions.
• Excellent Electrical Properties: With high dielectric strength (≥16 KV/mm), extremely high volume resistivity (2.0*10¹⁵ Ω·cm), and a stable dielectric constant (2.96 @60Hz), it provides superior insulation and arc resistance for electronic components.
• Good Mechanical Properties: Its tensile strength (≥1.5MPa), elongation at break (≥150%), and moderate hardness (Shore A 30-40) allow it to effectively cushion vibrations and stress after bonding, enhancing product durability.
• Superior Aging and Moisture Resistance: It effectively resists moisture, ozone, and UV aging, providing long-lasting protection for equipment.

Versatile Applications Empowering Diverse Industries

Due to its reliable performance, K-704 plays a key role in multiple sectors:

• Electronics & Electrical Appliances: Widely used for waterproof sealing at the ends of electric heaters, bonding magnet wedges to metal housings in small motors, providing insulation for motors, potting and sealing electronic components (such as capacitors, sensors), and bonding casings for electronic instruments.
• Automotive Manufacturing: Ideal for bonding and sealing automotive lights, capable of withstanding temperature fluctuations in the engine compartment and vibrations during driving.
• Optical Instruments: Suitable for bonding and sealing optical instruments and lenses; its neutral cure properties prevent corrosion of delicate optical parts.
• General Industry: Applicable for bonding and sealing tasks between most common metals (such as aluminum, copper, stainless steel) and non-metallic materials (like ceramics, glass, many plastics).

Easy Application and Professional Support

K-704 is very easy to use: simply clean and dry the surfaces to be bonded, then dispense the adhesive from the tube. It features a fast surface-dry time (≤10 minutes at 25°C) and typically cures fully within 24 hours. For applications requiring higher performance, post-curing in a humid environment at 50-100°C for 4-8 hours after initial room-temperature curing is recommended to optimize its overall properties.