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Learn how an alternative solution to traditional two-part, silicone adhesive sealants for appliance assembly can offer rapid curing, regulatory compliance and supply chain efficiency while maintaining high-performance standards. 

As appliance assembly manufacturers like you strive to meet the output demands for electric stovetops, overhead hoods and other high-temperature, white goods applications, they know it’s important to find ways to streamline their processes whenever possible. However, simplifying production methods can be challenging to justify if doing so may impact the overall performance of the end-use product.

For example, two-part, silicone adhesive sealants have been a common solution for effectively bonding and sealing appliance assembly applications and meet desired performance needs. While their long curing process hinders production speeds, manufacturers have not been inclined to look elsewhere, as they don’t want to risk diminishing aspects like temperature resistance and bond strength.

Until now.

Learn more about the limitations associated with traditional methods and how an alternative option can help manufacturers increase production speeds while maintaining high performance.

Traditional Two-Part, Silicone Adhesive Sealants

As you likely know, two-part, silicone adhesive sealants have been a go-to solution for electric stovetops, overhead hoods and other appliance applications. This is because they offer:

  • Durability with flexibility: Consisting of a polymeric silicone base compound with a crosslinking agent, two-part, silicone adhesive sealants offer excellent adhesion and are known for providing a long, durable service life. Further, two-part, silicone adhesive sealants provide moisture and chemical resistance, helping the end-use application prolong its lifespan when exposed to water or household cleaning products. They are also designed to offer flexibility, which allows for more movement between bonded parts without compromising the adhesive strength.
  • Substrate versatility: Two-part, silicone adhesive sealants are compatible with a variety of substrates including metals, plastics, glass and ceramics. This helps manufacturers utilize the technology throughout various appliance parts and end-use applications to simplify their processes.
  • Additional protection: The silicone technology helps protect against electrical shocks or short circuits, making these products suitable across appliance applications that require insulating electrical components.
  • Temperature resistance: With a wide temperature range, two-part, silicone adhesive sealants can handle appliances that may experience temperature variations during usage. They also can withstand thermal cycling without cracking or losing bond strength, helping extend the longevity of the end-use appliance and enhancing its overall safety.

Limitations with Traditional Two-Part, Silicone Adhesive Sealants

While two-part, silicone adhesive sealants offer key performance needs for appliance assembly applications, these traditional options have inherent limitations that can pose challenges in production.

  • Curing times: Two-part, silicone adhesive sealants typically have longer cure times compared to other adhesives for appliance assembly, such as cyanoacrylates or UV-curable adhesives. This can slow down production time if manufacturers must pause to let two pieces cure during the bonding process. Additionally, they may also have to factor in additional time to clamp components together to ensure the curing is efficient.
  • Regulatory restrictions: Some silicone-based formulations may contain chemicals or additives that require regulatory compliance, special handling or proper disposal procedures. Further, not all silicone-based formulations include REACH compliance, which means alternative options may need to be utilized per region. Both situations can take time away from day-to-day operations to ensure end-use products are delivered on time. Additionally, it can increase production costs if specific disposal methods must be taken.
  • Supply chain issues: If a component of two-part silicone adhesive sealants is running short, this can lead to delays for supply and cause holdups to delivering end-use products.


Introducing an Alternative Solution:

Comprised of 100% silicone, manufacturers are taking note of an alternative adhesive sealant solution that rapidly builds adhesive and elastomeric strength for white goods appliance assembly applications while overcoming previous challenges with two-part, silicone adhesive sealants.

Fast Fixture Time

This alternative provides end-cure bond strength improvement when compared to industry standards due to its ability to wet out the surface better than standard silicone adhesive sealants. This helps extend the overall long-term lifespan while enabling glass and metal appliance components to bond tightly and move through assembly faster than before.

Regulatory Compliance

This alternative’s formulation is REACH compatible, allowing manufacturers to use it across regions such as Europe, Asia and the Americas without worrying about chemical compliance regulations to simplify logistics. Internal testing has shown the alternative formulation performs to the same standards of UL746C protocol.

Supply Chain Efficiencies

As a fully-formulated product, this alternative adhesive sealant eases complexities to help make sure the right components are available to receive the desired supply. If a raw material does experience a shortage, a supplier that’s part of a bigger company and offering this alternative can formulate with substitute materials while ensuring the same performance levels to keep projects moving on schedule.

The alternative adhesive sealant solution also easily addresses the following performance needs:

  • High-cure strength: As mentioned above, this alternative develops high initial green strength and has a five to ten-minute fixture time, ensuring the end-use product will still maintain flexibility and moisture resistance while keeping production processes moving.
  • Versatile usage: Designed for bonding glass and metals including stainless steel, aluminum and galvanized painted steel, plastics and ceramics, the alternative option provides strong bonding between substrates. This makes it compatible with electric stovetops and overhead hoods as well as refrigerators and washers.
  • Temperature protection: The alternative solution can continually withstand  temperatures up to 356°F (180°C), making it suitable for appliance applications that require high-temperature resistance.

Introducing an Alternative Solution:

As part of Bostik’s Born2Bond engineering adhesive solutions, SIL-9605 is an alternative solution to traditional two-part, silicone adhesive sealants for appliance assembly applications. This strong bonding, fast processing, high heat silicone adhesive sealant alternative addresses unmet needs in the market to improve overall end-cure bond strength at an increased rate while maintaining durability, versatility and temperature resistance. SIL-9605 is a solventless solution certified under UL746C, proving it meets industry standards for safety and performance in electrical applications. It also meets REACH compliance.

Along with our improved, alternative solution, we are vertically integrated as the adhesives division of Arkema to provide a secure supply chain, helping manufacturers deliver end-use products on time and connect with Bostik experts whenever needed.  

Interested in learning how our improved, alternative two-part, silicone adhesive sealant can improve manufacturing processes and bonding strength? Contact a Bostik expert to find out how we can enhance performance and production for appliance assembly applications.

*based on Bostik internal testing

Other Assembly Applications:

Why Appliance Manufacturing Needs Appliance Adhesives

Choose the Right Adhesive Technology for Appliance Assembly Applications

How Adhesives Can Help Meet Demand for Smart Appliances

©2023 Bostik, Inc. All Rights Reserved

All information contained herein is believed to be accurate as of the date of publication, is provided “as-is” and is subject to change without notice. To review our full U.S. Legal Disclaimer, visit:


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