Esspee Sindanyo H91

Sindanyo® H91

Sindanyo® H91 is a blended portland cement based insulation material that has been formulated to provide enhanced campaign life in demanding high temperature and electrical applications.

H91 is asbestos free, has good insulation properties and is non-combustible. Its low thermal conductivity ensures consistent thermal performance combined with good compressive and mechanical strength at optimum temperature. H91 can be extensively machined to a high definition finish utilising Esspee’s comprehensive machining facility.

Key Benefits

Resistant to most acids/alkalis


Easily threaded or tapped

Good wear resistance

High compressive strength

Electrically insulating



Top Plates

End Boards

Arc Chutes

Coil Supports

Brazing and Soldering Plates

Muffle Plates


Dead Plates

Terminal Covers

Download our brochure for more information about this product, such as Key Data, Formats and Maximum Temperatures.