Here at Advanced Seals & Gaskets we manufacture a wide variety of products and components in HT800 Silicone, most of which are designed by the customers with the assistance of our technical HT800 expertise.

HT – 800 is a versatile Silicone Sponge of medium firmness that offers the lightness of foam along with the sealing capabilities of a sponge rubber.

This type of Silicone material is very flexible and is an excellent environmental seal that protects against air, dust and moisture.

HT – 800 is available in black, grey and red and is traditionally made in continuous rolls at 914mm wide. It comes in a wide range of thicknesses from 0.8mm to 12.7mm with a skin finish on both sides.

HT – 800 has many key characteristics including:

  •          Excellent memory and recovery
  •          Resistance to UV light and ozone
  •          Resistance to extreme temperatures
  •          Compact cell structure offers enhanced sealing properties
  •          Flame retardant to UL94 HF1 and V-0
  •          Low smoke
  •          Toxic gas emission meets SMP-800 C pass
  •          Wide temperature range of -55° to +200°


HT – 800 is used in many applications from light fixtures, outdoor enclosures, electrical cabinets, HVAC units, vibration isolation through to general engineering and transportation.

Advanced Seals & Gaskets Ltd have excellent manufacturing facilities, which ensures all of our productsHT800 are manufactured here in the UK under our Quality Management System to ISO 9001.

This gives our customers the ability to discuss their bespoke requirements with highly trained staff to ensure that they receive the best product for their application.

We are able to offer a range of adhesive backing systems that we can laminate to HT-800 on either one side or both sides if preferred.

Listed below are some of the formats that we are able to offer:

  •          HT800 sheet
  •          HT800 gaskets
  •          HT800 strip
  •          HT800 rolls
  •          HT800 pads
  •          HT800 fabrications
  •          HT800 seals
  •          HT800 tape
  •          HT800 washers


Help with HT800

If you would like to speak to a representative to discuss your specific application or requirements please call our sales office direct on 01384 469100, alternatively you can send an E-mail. Simply click on the link and forward us your details along with your question and we will contact you immediately.

Advanced Seals and Gaskets Ltd

Tel: 01384 252555


ISO 9001

The information presented is based on the present level of knowledge and experience.

All information and recommendations contained in this publication are to the best of our knowledge. Since the conditions of use are beyond our control, users must satisfy themselves that products are suitable for the intended processes and applications.