Reduce weight in underbody coating and seam sealant, without compromising performance

The new Expancel® HP92 is breaking boundaries for thermoplastic fillers in high-pressure automotive applications by combining high volume recovery after pressurization with exceptionally low material density. Ideal as an automotive underbody coating and seam sealant filler, greatly reducing weight while providing excellent coating and elasticity performance.

Reduced coating weight

8 times lower material density compared to high-pressure glass microsphere fillers

Optimized for pressure

Thermoplastic microsphere with excellent performance in high-pressure applications

Low equipment wear

Low about of filler material needed to reach the desired coating performance

4x better volume recovery after pressurization

Optimized for high pressure applications


Underbody coating and seam sealant are essential in reducing noise and protecting the vehicle underbody against environmental influences.

During storage, pumping, and spray application processes up to 350 bar (5076 psi) of pressure can occur. Current thermoplastic microsphere fillers fail during these conditions, resulting in increased density and poor surface finish.

The new Expancel® HP92 microsphere's exceptional stability allows for more than 4 times better recovery to its original shape after pressurization than a legacy microsphere, even in DINP.


Find out more about Expancel® HP92 microspheres

Please contact our Expancel® microspheres experts.
We look forward to hearing from you.
For our existing customers, please log in to our MyNouryon customer portal.


If you prefer to call us you can reach us at: 

China, Ningbo: +86 15850006054
Brazil, Jundiaí: +55 1145894800
India, Mumbai: +91 2025560384
Japan, Tokyo: Attn: Mikiya Nomura, +81 356436354
Netherlands, Amsterdam: +31 889841000 
Russia, Moscow: Attn: Olga Lomakina, +7 4957661606
USA, Marietta: +1 770 5780858

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