Silicone Standard Gels

Product description

DOW Silicones (formerly Dow Corning) delivers a wide variety of silicone-based polymers for diverse solutions in electric, electronic and energy applications. DOWSIL™ and SYLGARD™ silicone gels are a special class of encapsulants that cure to an extremely soft material. Gels cure in place to form cushioning, self-healing, resilient materials. Cured silicone gels retain much of the stress relief and self-healing qualities of a liquid while providing the dimensional stability of an elastomer. Typically, gels are used to protect circuits from the harmful effects of moisture and other contaminants and provide electrical insulation for high voltages. Another key characteristic of most gels is a naturally tacky surface after cure. This natural adhesion allows gels to gain mechanical adhesion to most common surfaces without the need for primers. The tacky nature also results in the unique ability to re-heal if the cured gel has been torn or cut. The ability of re-healing permits the use of test probes directly through the gel for circuit testing.

Standard DOWSIL™ and SYLGARD™ silicone gels are used for sealing and protecting (by coating, encapsulating or potting) various electronic devices, especially those with delicate components, from thermal and/or mechanical shock and for providing vibration dampening.

Product Viscosity [mPas] Penetration [1/10 mm] Cure Time (Pot Life)   
DOWSIL™ 3-4118 Gel 7,000 110 60 min @125 °C (30 min) 
DOWSIL™ 3-4133 Dielectric Gel 450 10 4 min @100 °C, 1.6 min @150 °C (6 h) 
DOWSIL™ 3-4150 Dielectric Gel 470 50 3 h @80 °C, 1.75 h @100 °C (6 min) 
DOWSIL™ 3-4154 Dielectric Gel 550 50 3 h @80 °C, 1.75 h @100 °C (30 min) 
DOWSIL™ 3-4170 Dielectric Gel 460 65 9 min @100 °C, 3 min @150°C (> 24 h) 
DOWSIL™ 3-4680 Silicone Gel 260 60 1 min @125 °C 
DOWSIL™ EG-3000 silicone gel 2,300 60 60 min @150 °C (8 h) 
SYLGARD™ 3-6636 Silicone Dielectric Gel 3,300 55 3 h @70 °C, 45 min @100 °C (< 10 min) 
SYLGARD™ 517 Dielectric Gel Kit 450 45 4h @65°C, 1h @100°C, 15 min@150 °C (2h) 
SYLGARD™ 527 Silicone Dielectric Gel 460 - 3.5 h @100 °C, 35 min @150 °C (2 h) 
SYLGARD™ 528 Firm Gel 400 - Heat accelerable (6 h)
SYLGARD™ 535 Thixotropic Dielectric Gel 3,000 60 60 min @150 °C
SYLGARD™ 537 Dielectric Gel 360 20 60 min @120 °C 



Country availability

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Eray Berberoğlu

Contact person

Eray Berberoğlu

Product Manager

email   phone

Further information


Electronics Portfolio
pdf (3.2 MB)


Silicone Encapsulants and Gels
pdf (1.2 MB)