KE 3494
Product Information
Five minute tack free time
Low Volatility
Low Odour
Patented Cross linking System
Excellent adhesion to many Substances
Thixotropic Paste
Shin-Etsu KE3494 is UL-94V-0 rated, non-corrosive adhesive/sealant developed for applications in consumer electronics, transportation, and aerospace. Utilising a patented cross linking system, these materials offer a fast curing alternative to other electronic grade silicone sealants. In addition, rigorous processing of the base polymer in KE 3494 ensures minimal volatilisation of low molecular weight silicone constituents after cure and subsequent exposure to high temperatures.
KE 3494 RTV adhesive /sealant is a self-leveling, medium viscosity material that is ideal for many potting, coating, and sealing applications.
KE 3494 RTV adhesive/sealant is grey in colour and cures to a tough, flexible silicone elastomer upon exposure to atmospheric moisture at room temperature. This material will exhibit excellent adhesion to many sub straights including glass, wood, ceramics, clean metals, other silicone elastomers, and plastics like ABS, polycarbonate, and PVC.
This product is UL registered. A brief description of UL 94 Flammability Rating can be found here
Typical Properties | ||
| KE 3494 | ||
| Uncured Properties | Appearance | Flowable Liquid |
| Specific Gravity, 25°C | 1.20 | |
| Tack Free Time, min | 5 | |
| Viscosity, CPS at 25°C | - | |
| Colour | Gray | |
| Cured Properties (7days/20°C and 55% RH) | Hardness, Shore-A | 35 |
| Tensile Strength, psi | 350 | |
| Elongation % | 220 | |
| Lap Shear, Al-Al, psi | 100 | |
| Electrical Properties | Volume Resistivity, Ω/cm | 3x1014 |
| Dielectric Strength, V/mm | 600 | |
| Dielectric Constant, 60Hz | 3.2 | |
| Dissipation Factor, 60Hz | 0.01 | |
| Low Volatile Silicones (Dn) | % | <0.07 |
| Flame Class (UL-94) | 0.79mm | V-1 |
| 1.57mm | V-1 | |
| 3.17mm | V-0 | |
Applications
Bonding and sealing applications on CRTs.
Form-in-place-gasketing.
Sealing appliance electronics.
Sealing electrical connections, control boxes.
Encapsulating and sealing heating elements.