Fire-Retardant Structural Adhesive
Pyrok® 803
Pyrok 803 is a Fire-Retardant structural polyurethane adhesive. It is designed for applications that need a rigid and low-flex adhesive with fire retardant properties.

- Fire Retardant
- High Strength
- Rigid and Durable Bonds
Overview
Sizes Available
Applications
The fire-retardant properties of this structural adhesive makes it ideal for structural bonding in applications that demand fire-retardancy.
The fire-retardant properties of this structural adhesive makes it ideal for structural bonding in applications that demand fire-retardancy.
Key features
How to use
- Application Temperature:
- Should be between 5℃ and 30℃. Higher or lower temperatures can impact cure speed and adhesive performance.
- Surface Preparation:
- It's recommended to clean and abrade substrates before application. Pyrok 803 may require the use of extensive surface preparation (like abrading and priming) to ensure a strong bond.
- Application:
- Make sure to follow the proper instructions before using Pyrok 803 as it is a two-component adhesive. Watch the 'How-To' video in the media section below.
Faq's
How strong is Pyrok 803?
Pyrok 803 can achieve strengths of up to 25 MPa. In comparison to similar products, Purok VX61 achieves strengths up to 23 MPa and Purok VX60 can achieve strengths up to 30 MPa so it is in a similar ballpark to those products.
Are there safety restrictions for Pyrok 803?
Yes, due to the isocyanates in Pyrok 803, you will need to undertake the required training in order to use it in compliance with the REACH restrictions
Does Pyrok 803 smell?
No, the polyurethane chemistry does not cause Pyrok 803 to have an odour.
How long does Pyrok 803 take to cure?
Pyrok 803 has a working time of 30 minutes and a handling time of 2 hours. This means that you have a maximum period of 30 minutes to put the materials in place. It also means that you will be able to put the structure in light operation after 2 hours.
Is Pyrok 803 suitable for external use?
Yes, its properties make it viable for both internal and external applications requiring fire resistance. The polyurethane technology is very durable and will retain its strength even in harsh conditions.
Ready to purchase?
You can do so by purchasing directly from us or via one of our distributors




