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SYLGARD™ 517 Dielectric Gel – Two-component silicone gel – Electrical insulation and protective encapsulation for electronic components

  • Technology: Two-part silicone dielectric gel
  • Brand Name: SYLGARD™ 517 Dielectric Gel Kit
  • Manufacturer: Dow
  • Package Size: Contact Techniq VN for details.
  • Shelf Life: 12 months

1. Product Overview

SYLGARD™ 517 Dielectric Gel Kit is a two-part, clear silicone gel designed for sealing and protecting delicate electronic components. It features low viscosity, a 1:1 mixing ratio, and cures at room or elevated temperatures without by-products. The gel exhibits self-healing properties, permanent adhesion to most materials, and remains stable and flexible from -50°C to +200°C.


2. Applications

SYLGARD™ 517 Dielectric Gel Kit is used for:

  • Sealing and protecting delicate electronic circuits from moisture and contaminants
  • Encapsulating hybrid devices and other sensitive electronics
  • Sealing small appliances requiring dielectric protection

3. Typical Properties

As Supplied (Before Mixing)

Property Unit Part A Part B Test Method
Color Clear Clear CTM 0176
Viscosity at 23°C mPa.s 450 450 ASTM D1084

Mixed 1:1 (Before Curing)

Property Unit Result Test Method
Viscosity at 23°C mPa.s 450 ASTM D1084
Specific Gravity at 23°C 0.97 ASTM D0792

Cured (After 1 Hour at 150°C)

Property Unit Result Test Method
Color Clear CTM 0176
Penetration mm × 10⁻¹ 45
Dielectric Strength kV/mm 15 ASTM D0149
Volume Resistivity Ohm.cm 3×10¹⁵ ASTM D257

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BERGQUIST microTIM mTIM 1028 is purpose built for riding cage assemblies in servers, switches, and routers, interfacing with electroless nickel plated copper or aluminum heat sinks. It ensures stable operation in high power transceiver modules while also extending applicability to liquid cooling components, heat pipes, and fin based dissipative structures.

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