HT200 (Sound Block) Silicone Rubber

CB Frost are a UK preferred convertor of the BISCO range of silicone-based foams and have a relationship with Rogers Corporation extending over 30 years.

HT200 (Sound Block) Silicone rubber materials are specifically designed to reduce the transmissions of sound within interior space and preventing the spread of fire and smoke. The elastomeric materials use a filler technology to solve acoustic, fire and smoke issues within a variety of markets.

They are supplied in roll form and are available with or without adhesives and supported backings to aid in your installation on various surfaces, wall panels, doors, flooring, and ducting.

HT200 (Sound Block) Silicone Rubber thicknesses

0.64mm, 1.27mm, 1.91mm, 2.54mm and 3.81mm as standard

Fire Classification  

R1 – Interiors Primary

R2 – Interiors Limited Use

R3 – External Features

R7 – External Features


HL2 (0.64 – 3.81mm)

HL3 (0.64 – 3.81mm)

HL3 (0.64 – 3.81mm)

HL3 (0.64 – 3.81mm)


Specification Typical Values
Polymer: Silicone
Structure: Solid Rubber
Colour: Black
Temp: -55/+250 °C

**Data as per our current stock grade


  • BS6853 approved

  • UL94 V-0 and HF-1

  • Tested to EN45545-2

  • Effective sound blocking

Manufacture Capabilities:

  • Gaskets

  • Strip

  • Washers

  • Sheeting

  • Fabrication

Our Partners

Dependable on-time
Full lot traceability on
raw material
Rapid lead times on tooling
and products
Manufacturing services from 1-off
to mass production
CB Frost Logo

Office Hours

Monday to Thursday
8.00am to 4.35pm
Friday - 8.00am to 1.00pm

Get in touch

Unit C1, Matrix Point, Mainstream Way, Nechells, Birmingham: UK: B7 4SN