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. This transparent series is UL 94 non-flammable, operates between -65 to +90 °C, and comes in soft (Shore A) and hard (Shore D) versions.
ELPECAST® VT 3402 KK 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® VT 3402 KK Applications
- Aerospace
- Consumer
- E-mobility/automotive
- Industrial
- Lighting
- Medical
- Railway
- Renewables
- Satellite and communication
- Security/defense
About Prostech
Prostech Philippines is a one-stop solution provider for specialty materials and equipment across electronics manufacturing, from PCBA to final assembly. Our core material and equipment solutions include:
- PCB Assembly Materials
- Cleaning & Degreaser
- Circuit Board Protection
- Thermal Management Solutions
- EMI Shielding
- General Assembly Adhesives
- Elastomeric Materials
- Process Equipment: Potting & Coating Systems, UV/ Heat Curing, Plasma Treatment, Tape placement automation, and cleaning machines
Technical Added Value to customer
Prostech offers customized material and process equipment solutions with engineering support throughout R&D, production process optimization, and performance validation. Our in-house lab located in Alabang, Muntinlupa is equipped to conduct electronics material testing, application simulation, and adhesive validation, helping customers reduce the need for onsite trials and accelerate implementation.
International Supply Chain Advantage
Regional warehouse hubs across Vietnam, Singapore, Malaysia, and the Philippines ensure cross-border reliable supply. In Philippines PEZA-bonded warehouse located at Lima Industrial Park, Batangas enables Prostech to provide responsive, demand-based delivery and significantly shortens standard lead time for Philippines customers.
Need help selecting the right product or solution?
| 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 |



