KE 3490

Product Information

Three minute tack free time
Low Volatility
Low Odour
Patented Cross linking System
Excellent adhesion to many Substances
Thixotropic Paste

Shin-Etsu KE3490 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 3490 ensures minimal volatilisation of low molecular weight silicone constituents after cure and subsequent exposure to high temperatures.

£POA please contact our sales department here quoting the product name

KE 3490 RTV adhesive /sealant is a non-sag thixotropic paste that may be applied overhead or on sidewall joints and surfaces.

KE 3490 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 3490
Uncured Properties Appearance Thixotropic paste
Specific Gravity, 25°C 1.20
Tack Free Time, min 3
Viscosity, CPS at 25°C -
Colour Gray
Cured Properties (7days/20°C and 55% RH) Hardness, Shore-A 40
Tensile Strength, psi 500
Elongation % 400
Lap Shear, Al-Al, psi 150
Electrical Properties Volume Resistivity, Ω/cm 4x1014
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.

Data Sheets

Data Sheet

Material Safety Data Sheet