Product Introduction
ELPECAST® Wepuran VT 3402 KK series offers a large variety in terms of viscosity, colours, processing time, and pot life. It includes numerous hardness and elasticity adjustments that cover the full range of Shore hardness, with good resistance against water, moisture, lyes, acids, and many chemicals. Elastic adjustments serve as a low-cost alternative for silicone casting compounds. The series is crystal-clear and highly transparent with very high optical transparency and low optical damping. It delivers very good weather resistance, extraordinary UV light stability, and good thermal resistance. Designed for outdoor use or underwater applications, it is ideal for flexible LED strips, aluminium profiles, and more. Transparent colouring can be achieved using dyestuff concentrates. VT 3402 OPAL significantly reduces the colour temperature shift of LEDs that occurs with transparent casting compounds, while an even light diffusion effect can be realised with VT 3402 OPAL or the opaque top coat VT 3492 LS. Recommended auxiliary products include Accelerating Agent B 4402, adhesion promoters AP 4 LED and EH 13.950/EH 13.951, sealing mastic EH 13.271, mould release agent EH 13.650, and cleaning agent R 13.780.
Colours: colourless transparent, red, blue
Transparency: transparent
Temperature: -65 to +90 °C
Flammability: UL 94 (non-flammable)
Hardness: soft (Shore A), hard (Shore D)
ELPECAST® Wepuran VT 3402 KK series Features
- Large variety in viscosity, colours, processing time, and pot life
- Numerous hardness and elasticity adjustments covering full Shore hardness range
- Good resistance against water, moisture, lyes, acids, and many chemicals
- Elastic adjustments as a low-cost alternative for silicone casting compounds
- Crystal-clear and highly transparent
- Very high optical transparency with low optical damping
- Very good weather resistance, extraordinary UV light stability, and good thermal resistance
- For outdoor use or underwater applications, in flexible LED strips, aluminium profiles, and more
- Transparent colouring achievable using dyestuff concentrates
- VT 3402 OPAL significantly reduces the colour temperature shift of LEDs
- Even light diffusion effect with VT 3402 OPAL or opaque top coat VT 3492 LS
- Auxiliary products recommended: Accelerating Agent B 4402, adhesion promoters AP 4 LED and EH 13.950/EH 13.951, sealing mastic EH 13.271, mould release agent EH 13.650, cleaning agent R 13.780
ELPECAST® Wepuran VT 3402 KK series Applications
- Aerospace
- Consumer
- E-mobility/automotive
- Industrial
- Lighting
- Medical
- Railway
- Renewables
- Satellite and communication
- Security/defense
About Prostech
Prostech offers specialty materials (adhesives, tapes, thermal interface materials, insulating materials, sealants, PCB protection materials, …) along with manufacturing solutions. We proudly serve a wide range of industries and are an authorized distributor for leading global manufacturers of industrial materials and equipment. Our product range is designed to deliver customized solutions that address each customer’s unique needs.
With years of experience and a successful project history, we are confident in our ability to provide comprehensive material solutions. These solutions effectively tackle the challenges manufacturers face. To explore our full product catalog, simply click here. Our dedicated team is ready to assist with:
- Provide quotation, sample, TDS/MSDS, and technical consultation
- Testing sample quality and verifying product compatibility in our laboratory
- Customizing material formulas for special applications
- Adapting product sizes, quantities, and packaging to meet specific needs
- Offering expert advice on suitable equipment and automation processes
- Delivering technical training and on-site support for optimal product use
Moreover, Prostech ensures the safe and accurate global delivery of all materials, including “dangerous goods”, in compliance with legal regulations. For personalized technical support or to receive a quotation, please contact us today.
| Property | Value |
|---|---|
| Clarity | crystal-clear and highly transparent |
| Optical Transparency | very high optical transparency with low optical damping |
| Weather and UV Resistance | very good weather resistance, extraordinary UV light stability and good thermal resistance |
| Applications | for outdoor use or underwater applications, in flexible LED strips, aluminium profiles and more |
| Colouring | transparent colouring by dyestuff concentrates |
| VT 3402 OPAL Effect | significantly reduces the colour temperature shift of LEDs that occurs with transparent casting compounds |
| Light Diffusion Effect | an even light diffusion effect can be realised with VT 3402 OPAL or the opaque top coat VT 3492 LS |
| Auxiliary Products Recommended | Accelerating Agent B 4402, adhesion promoters AP 4 LED and EH 13.950/EH 13.951, sealing mastic EH 13.271, mould release agent EH 13.650, cleaning agent R 13.780 |
| Colours | colourless transparent, red, blue |
| Transparency | transparent |
| Temperature | -65 to +90 °C |
| Flammability | UL 94 (non-flammable) |
| Hardness | soft (Shore A), hard (Shore D) |
| Fields of Use | aerospace, consumer, e-mobility/automotive, industrial, lighting, medical, railway, renewables, satellite and communication, security/defense |


