Dow Sylgard 3-6636 Silicone Dielectric Gel Kit

CONTACT REP

Description for Dow Sylgard 3-6636 Silicone Dielectric Gel Kit

Extremely soft or firm, thermal/mechanical shock and vibration damping, excellent dielectric properties, flexible cure schedule, reversion resistant, thick section cure, compatible with automated dispensing equipment, and physical and electrical stability over a wide temperature range.

Note: This material has been discontinued. Please view the Manufacturer's Recommended Replacement tab or call us at (262) 293-7970 for additional help.

*See Terms of Use Below

Brand	Sylgard
Application Type	Potting, Seal
1 Part or 2 Part	2-Part
Material Form	Gel
Industry	Circuits, Electronics, Optoelectronics
Manufacturer	Dow
Chemistry	Silicone, Solvent-free
Cure Method	Part A/Part B
Cure Temperature (°C)	70, 100
Viscosity (cPs)	High, 3,200
Color	Clear
High Temperature Resistance (°C)	200
Low Temperature Resistance (°C)	-45, -55
Volume Resistivity (O)	1.1E+15 (ohms/cm)
Light Refractive Index (RI)	High

Best Practices for Dow Sylgard 3-6636 Silicone Dielectric Gel Kit

Register for FREE to view more details

Why register?

View Technical Details
View Test Methods
View Key Specifications
View Similar Materials
Save your Project Searches

See what Gluespec offers

Sign up now Already registered? Sign in!

Email: *

Password: *

Confirm Password: *

Do you prefer to see data in °F or °C?

First Name: *

Last Name: *

Phone: *

Company Name: *

Address: *

Postal Code: *

Country: *

Job Function: *

Industry: *

Describe: *

I agree to the terms of use *

*: Required

Technical Data for Dow Sylgard 3-6636 Silicone Dielectric Gel Kit

*See Terms of Use Below

Overview

Application Type
- Pottant / Encapsulant - Potting
- Sealant - Seal
1 Part or 2 Part
- 2-Part
Material Form
- Gel
Industry
- Electronics - Circuits, Optoelectronics
- Industrial - Delicate components
Chemistry
- Solvent-Free
- Silicone
Application Method
- Dispenser - Automated dispensing equipment
Cure Method
- 2-Part Cure - Part A/Part B
Color
- Clear / Transparent - Clear
Brand
- Sylgard

Specifications

Cure Specs

Cure Temperature (°C)	70, 100
Viscosity (cPs)	High, 3,200
Mix Ratio	1:1 (by volume)

Material Resistance

High Temperature Resistance (°C)	200
Low Temperature Resistance (°C)	-45, -55
Moisture/Humidity Resistance	Moisture/humidity resistance

Conductivity

Dissipation Factor		Test Method
Dielectric Strength (V/mil)	Excellent, 425
Dielectric Constant	2.85, 2.86	Test Method
Volume Resistivity (O)	1.1E+15 (ohms/cm)

Hardness

Flexibility	Flexible, Resilient

Other Properties

Light Refractive Index (RI)	High
Specific Gravity	0.990	Test Method
Coefficient of Thermal Expansion (CTE)	730 (Linear (micron/m °C or ppm ))
Flash Point (°F)	212.0

Business Information

Shelf Life Details	Shelf life from date of manufacture for material in the original, unopened container, stored at less than 35°C, unless otherwise noted.;Storage conditions and shelf life (“Use By” date) are indicated on the product label.
Shelf Life Temperature (°F)	<95
Shelf Life Type	from date of manufacture
Shelf Life (mon)	12

Best Practices for Dow Sylgard 3-6636 Silicone Dielectric Gel Kit

*See Terms of Use Below
1. Mixing
  
  Some gels are supplied in bladder packs that avoid direct air contact with the liquid gel components, allowing use of air pressure over the pack in a pressure pot for dispensing. Do not apply air pressure directly to the liquid gel surface (without the bladder pack) as the gel can become supersaturated with air and bubbling can occur when the material is dispensed and cured. Use of bladder packs prevents bubbling, maintains cleanliness and avoids gel contamination. Gels can be dispensed manually or by using one of the available types of meter mix equipment. Typically, the two components are of matched viscosities and are readily mixed with static or dynamic mixers, with automated meter-mix normally used for high volume processes. For low volume applications, manual weighing and simple hand mixing may be appropriate. Inaccurate proportioning or inadequate mixing may cause localized or widespread problems affecting the gel properties or cure characteristics. If possible, the potential for entrapment and incorporation of gas (typically air) should be considered during design of the part and selection of a process to mix and dispense the gel. This is especially important with higher viscosity and faster-curing gels. Degassing at >28 inches (10-20 mm) Hg vacuum may be necessary to ensure a void-free, protective layer.
2. Testing
  
  If a substrate or material is questionable with respect to potentially causing inhibition of cure, it is recommended that a small scale compatibility test be run to ascertain suitability in a given application. The presence of liquid or uncured product at the interface between the questionable substrate and the cured gel indicates incompatibility and inhibition of cure.
Manufacturer's Recommended Replacement Materials

*See Terms of Use Below
- Dowsil 3-4150 Dielectric Gel(Dow)
  A two-part, transparent green, 1:1 mix ratio, fast RT cure gel
- 3-4155 HV Dielectric Gel Kit(Dow)
  Extremely soft to medium hardness, thermal/mechanical shock and vibration damping, excellent dielectric properties, flexible cure schedule, reversion resistant, thick section cure, compatible with automated dispensing equipment, and physical and electrical stability over a wider temperature range than the other types of gels.
- Dowsil EG-4131 Dielectric Gel(Dow)
  2-part, clear, 1:1 mix ratio, flowable gel.
- Compare