Silicone Encapsulants and Pottings

Description

DOW Silicones (formerly Dow Corning) delivers a wide variety of silicone-based polymers for diverse solutions in electric, electronic and energy application cases. DOWSIL™ and SYLGARD™ Silicone encapsulants (or pottants) are protective materials used to completely embed electronic circuitry. Typically, they are used to protect circuits from harmful effects of moisture and other contaminants, provide electrical insulation for high voltages and also protect the circuit and interconnections from thermal and mechanical stress. Encapsulants are typically applied in thick layers – exceeding 125 mµ.

DOWSIL™ and SYLGARD™ encapsulants are supplied as solventless, two-component liquid component kits. Many are designed for a 1:1 mixing ratio (parts A and B). When the two liquid components are thoroughly mixed, the mixture cures to a flexible elastomer. Some products will cure at room temperature while others are designed to be cured by heat.

Product data

ProductViscosity [mPas]Mixing ratioCure time (Pot Life)  
DOWSIL™ 3-6121 Low Temperature Elastomer19,00010:1 20 min @100 °C, 10 min @150 °C (2h)
DOWSIL™ 3-6512 Elastomer9001:12 h @70 °C (24 h)
DOWSIL™ 3-8264 Encapsulant2,6501:12.5 h @70 °C, 30 min @100 °C
DOWSIL™ 93-500 Space Grade810010:110 min @100 °C, 4 min @150 °C (3h)
DOWSIL™ 93-500 Thixotropic EncapsulantNon-flow10:115 min @100 °C, 10 min @125 °C, 5 min @150 °C (1h)
DOWSIL™ SE 1816 CV Encapsulant2,6001:11 h @100 °C (24 h)
DOWSIL™ EE-1010 Low Viscosity Encapsulant8501:1 24 h @RT, 3 min @100 °C, 2 min @150 °C, (50 min) 
DOWSIL™ EE-1840 Encapsulant1,3001:17 d @25 °C, Heat accelerable (12 min)
DOWSIL™ EE-3200 Low Stress Encapsulant1,7001:120 min @50 °C (30 min)
SYLGARD™ 160 Silicone Elastomer4,5001:124 h @25 °C, 4 min @100 °C, (20 min) 
SYLAGRD™ 164 Silicone Elastomer9,1001:135 min @25 °C (-)
SYLGARD™ 170 Silicone Elastomer2,1001:124 h @25 °C , 45 min @50 °C , 25 min @70 °C , 15 min @80 °C , 10 min @100 °C (15 min) 
SYLGARD™ 170 Fast Cure Silicone Elastomer2,3001:110 min @25 °C (<5 min) 
SYLGARD™ 182 Silicone Elastomer5,70010:114 days @25 °C, 75 min @100 °C, 30 min @125 °C, 20 min @150 °C (8 h) 
SYLGARD™ 184 Silicone Elastomer3,50010:148 h @25 °C, 35 min @100 °C, 20 min @125 °C, 10 min @150 °C (90 min) 
SYLGARD™ 186 Silicone Elastomer65,00010:148 h @25 °C, 25 min @100 °C, 15 min @150 °C (100 min) 
SYLGARD™ 567 Primerless Silicone Encapsulant<1,5001:1180 min @70 °C 120 min @100 °C  (3 days)

Tradename(s)

  • DOWSIL™ SYLGARD™

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