MasterSil 153AO

Two part thermally conductive, electrically insulating silicone for bonding and sealing
Key Features
  • Paste consistency
  • Long open time
  • High temperature resistant
  • Remarkable adhesive properties
Typical Properties
Viscosity
Part A: 200,000-550,000 cps, Part B: 100,000-500,000 cps
Cure Schedule
Optimum cure is overnight at 75°F followed by 2-4 hours at 135°F to 185°F.
Hardness
65-75 Shore A
Service Temperature Range
-65°F to +400°F
Dielectric Strength
450 volts/mil
Elongation
100-120%
MasterSil 153AO Two Part Silicone System
Discuss with a Specialist
(1-2 Business Day Request) Get Technical Data sheet
(Instant Email Delivery) Request Safety Data sheet
(1-2 Business Day Request)
Applications

Bonding

bonding

Coating

Coating

Gap Filling

gap_filling

Sealing

sealing
Certifications

Meets EU Directive 2015/863

Packaging

Cans

Pails

Product Description

Master Bond MasterSil 153AO is a two component silicone for high performance bonding and sealing. With a forgiving 1 to 1 mix ratio by weight, it has a paste consistency and minimal flow while curing. It generates very little heat after mixing and has an exceptionally long working life. MasterSil 153AO cures at ambient temperature or more rapidly at elevated temperatures. The optimum cure is overnight at room temperature followed by 2-4 hours at 135°F to 185°F. Also, it contains no solvents or diluents and has very low shrinkage upon curing.

This silicone adhesive bonds well to a wide variety of substrates such as metals, glass, ceramics and many plastics. Moreover, it bonds tenaciously to silicone rubber. Other outstanding features include high temperature resistance, silicone type flexibility, and exceptionally strong bonding properties. As an addition cured system, it does not require exposure to air for complete cross-linking.

This system is top notch for withstanding thermal cycling and shock. Minimal stress is generated when bonding dissimilar substrates. It is white in color, with a service temperature range spanning between -65°F to +400°F. MasterSil 153AO is a great choice for applications involving sensitive optical and electronic components where heat dissipation along with electrical insulation is critical.

Product Advantages

  • Addition cured, no by-products released during cure, does not require air for curing
  • Convenient handling, 1:1 mix ratio by weight
  • Paste consistency
  • Several curing schedule options are available
  • Very low shrinkage upon curing
  • Especially robust adhesive properties
Discuss with a Specialist
(1-2 Business Day Request) Get Technical Data sheet
(Instant Email Delivery) Request Safety Data sheet
(1-2 Business Day Request)
Show More

How to order

Verify Your Product Selection

With thousands of custom formulations available, our expert engineers provide personalized consultation to ensure you select the ideal adhesive. We will follow up with a product and packaging recommendation for your specific application.

Get a Quote

Our customer service team will follow up with a detailed quote with packaging and shipping options.

Place Your Order

We'll work with your company to process the order efficiently.

Receive Your Material

Your adhesive will be made to order and shipped to you. Typical lead times are 10-14 business days, with rush options available for urgent orders.

Start Your Ordering Process

 

Not ready to order yet? 

Discuss your application with a product specialist