Name: Dow DOWSIL EA 3500 Sealant Base
Brand: Guangzhou Eric Wei Chemical Co., Ltd.

Features Of Dow DOWSIL EA 3500 Sealant Base

High-performance silicone elastomer base designed for formulating two-component addition-cure RTV silicone sealants.
Excellent thermal stability and long-term reliability across wide temperature ranges (–55 °C to +200 °C).
Low compression set and superior elasticity retention after prolonged aging or thermal cycling.
Compatible with standard platinum catalysts and inhibitors for precise cure control and extended pot life.
Low volatility and minimal by-product generation during cure, supporting clean manufacturing environments.

Typical Applications Of Dow DOWSIL EA 3500 Sealant Base

Aerospace component sealing and potting where high reliability under extreme thermal stress is required.
Automotive powertrain and sensor encapsulation demanding consistent dielectric performance and vibration resistance.
Industrial electronics protection in harsh environments, including motor controllers and power converters.
LED lighting assemblies requiring optical stability, low outgassing, and long-term adhesion to diverse substrates.
Medical device housing seals where biocompatibility-supporting formulations and low extractables are critical.

Chemical Type	High-molecular-weight vinyl-terminated polydimethylsiloxane (VT-PDMS)
Product Form	Clear, viscous liquid
Appearance	Colorless to pale yellow, transparent, homogeneous
Viscosity (25 °C, Brookfield RV, spindle #4, 6 rpm)	30,000 – 50,000 cP
Vinyl Content	0.12 – 0.18 wt%
Density (25 °C)	0.97 – 0.99 g/cm³
Volatile Content (150 °C, 3 hrs)	< 1.0 wt%
Primary Applications	Base polymer for addition-cure silicone sealants and encapsulants

Get in Touch with ERICW

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Contact With Us:

E-mail: wangxingqiang@ericwchem.com
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15921782326
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China