Ultra-High Temperature Resistant Bonding and Sealing Silicone Solutions

Henkel continues to lead in Appliance & HVAC solutions, and today announced its latest innovations, UL 746C recognized silicones with 230C ratings which cure at room temperature and enable ultra-high temperature resistance and unmatched thermocycling performance.

The products are designed to deliver robust bonding and sealing results and can be applied to a wide range of substrates including Aluminum, Porcelain, Glass, and Stainless Steel.

Both 2k and 1k products are offered to accommodate a variety of customers’ needs and performance requirements 

Normal silicone products typically withstand high working temperatures of 180°C per UL 746C, however Henkel pioneered new products LOCTITE SI 5869 & LOCTITE SI 5870 which achieve UL 746C ratings of 230°C, means the products:

  • can withstand the extremely high temperature of 282°C for 1000 hours, meanwhile 
  • pass the thermal cycling test ranging from 0°C to 230°C for indoor use

This now provides an adhesive solution for applications that previously were only addressed via mechanical methods. Moreover, these products now enable bonding of next-generation appliance designs with more demanding requirements.

LOCTITE SI 5869 & LOCTITE SI 5870 Features and Benefits

Common Advantages:

  • FIRST TO MARKET: UL 746C rating of 230°C
  • Unmatched thermocycling performance
  • Neutral cure mechanism
  • High elongation >300%
  • Excellent adhesion to a wide variety of substrates
  • Outstanding UV and weathering resistance

Differentiated Advantages for 1k and 2k:

  • 2k: Fast cure, adapted for process automation
  • 1k: Ease of use, working time for manual applications

While initially developed for home appliance applications, LOCTITE SI 5869 & LOCTITE SI 5870 characteristics may also be beneficial for other industrial bonding and sealing applications where excellent thermal resistance is required.

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