Pyroglass is proud of its long standing reputation as a British manufacturer committed to the highest levels of Quality and Customer Service.

We are passionate about our industry and our team of engineers and production staff work tirelessly from our UK manufacturing facility in Preston Lancashire. 
Our premises contains specialist equipment some of which has been designed and built in-house to produce our high temperature sealing and insulation materials.
We are extremely proud of our UKAS and ISO accreditations and Made in Britain status.

Established in 1987, Pyroglass Limited is a company with a wealth of experience
in the design, production and marketing of specialist high temperature sealing and insulating materials. We are a family owned independent business.

We are manufacturers and therefore have complete control over sourcing and usage of raw materials and production techniques. Quality is of paramount importance and strict control is applied from receipt of incoming materials to despatch of finished products.

The entire team at Pyroglass take great pride in meeting our customer’s needs and value their confidence in us. Customer confidence is vital and something which we appreciate is not achieved overnight. Once gained, it will not be taken for granted.

Our products cover a wide range of applications and can be found in:
  • Domestic and Industrial Heating Equipment

    Wood/MultiFuel/Pellet Stoves, Gas Fires, Boilers, Furnaces, Incinerators, Biomass Boilers and more

  • Truck, Bus and Generator Exhaust Systems

  • Steel / Aluminium Smelting Plants

  • Hydraulic Hoses and Cable Systems

  • Cooking Equipment

    Traditional Range Style Cookers and Self Cleaning Pyrolytic Ovens

  • Vehicle Electrical Wiring Harnesses

  • Oil Refineries and Oil Rigs

  • Thermal Acoustic Applications

In fact, the spectrum of Pyroglass products is growing rapidly as our customers offer us new and exciting thermal sealing and insulating challenges.

Industry leading experience of the most demanding standards

Why not give us a call to discuss how our existing selection of sealing and insulating products could be a good fit for your need. Our Pyroglass team is friendly, experienced and passionate about delivering a practical solution that best suits your needs.

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Our knowledgeable team have the resources and experience to advise you on the most appropriate solution that fits your needs.

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  • What temperature will glass fibre seals operate at?

    Depending upon the application glass fibre seals are capable of withstanding 600°C

  • Do you have any products which operate at temperatures > 600°?

    Yes, we do have certain special materials - please contact our Sales Dept. to discuss.

  • What is your order processing time?

    It depends upon the product(s) and quantity needed. We are a manufacturer so there is usually a production lead time. 

    For most orders we can turn them around within 10-12 working days but it is always a good idea to check with us first. Lead times can also vary according to the time of year.  In the heating season we do get very busy.


  • What temperature will the adhesive backing on glass fibre seals/tapes withstand?

    The adhesive backing is purely a 'fixing aid' during assembly. The adhesive backing will degrade at temperatures of 180°C or above but has served its purpose once the glass fibre seal/tape is held in place by some other mechanical means.     


  • What is the best way to start to remove the amber release film at the beginning of the roll of adhesive backed product?

    Sometimes it can be a little fiddly to start but there is a technique and if you contact our Sales Dept. we can provide a detailed instruction.      


  • What is the difference between a 'woven' and a 'knitted' tape?

    Woven tapes are constructed with warp and weft threads in an over and under construction whereas knitted tapes are formed with a series of interlocking 'loops' like a knitted sweater.       

  • Which is better 'knitted' or 'woven' tape?

    Woven tapes are often less flexible than knitted tapes. It depends upon the application as to which is considered better. Knitted tapes are very soft and conformable. They bed down well and are  perfect for taping awkward shapes. Both woven and knitted tapes have their place.

  • How do I prevent the end of a glass fibre seal or tape from fraying when cut?

    We recommend the use of our adhesive backed glass cloth tapes for end sealing.

  • How many turns of adhesive glass cloth tape should I apply to the seal?

    We recommend one and a half turns as a minimum.

  • What can I use on the ends of the firesleeve when it is cut?

    We recommend our silicone rubber self-amalgamating tape to seal the end.

Textile engineered solutions made to order, and designed to work

Pyroglass Limited is a textile engineering company. We have an on-going programme of investment in specialist machinery, some of which has been designed and built in-house.

Our manufacturing systems and chain of communication is always sufficiently flexible to accommodate urgent requirements and even if one of our products is not available from stock we can invariably respond quickly should our customers suddenly find they need product at short notice.

Technical advice on appropriate sealing / insulating materials for prototypes through to cost effective methods of usage is freely available.

We are able to CUSTOM BUILD some very unique products and when needed we can also supply products using our customer’s own brand labels.
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Pyroglass Product Industry Applications

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