PORON® Foam Washers

CB Frost are an established UK manufacturer of sponge, foam, and rubber washers.

The materials we covert from sheeting to Washer are either closed cell, open cell, semi-closed cell sponge, foam, or solid rubbers.

Washers can be produced in a variety of manufacturing processes including Die Cut, Water Jet Cut and Kiss cut supplied on continuous rolls.

Washers are packed securely into suitable packaging and labelled in accordance with our customer requirements. Additional packing options such as barcoding, individual polybag, and cardboard separation are also available.

CB Frost also offer the possibility of a door to door service providing our customers with the peace of mind that items will arrive safely, securely and in time.

Poron® Urethane is UL certified for use as Washer material (ULJMST2) and for flammability (ULHBF). In addition to this, Poron® Urethane also has low outgassing characteristics and is UV stable, making it ideal for outdoor use. The main properties of Poron® Urethane are its excellent compression set and deflection characteristics; this means that Poron® Urethane washers keep their shape well.

Adhesive backed PORON® Foam Washers

CB Frost can apply a pressure sensitive adhesive to either one or both faces of Poron® Urethane Foam. We stock a wide range of synthetic and acrylic tapes, our adhesive tapes come with an easy peel release liner which you simply remove to expose the adhesive. This face is then placed on to the substrate and firmly pressed to obtain the bond.


Our lead-time to supply plain Poron® Urethane Foam washers is 7 working days. Adhesive backed Poron® Urethane Foam Washer is 7-10 days, however CB Frost are flexible and work with our customers to ensure we meet their expectations.

Free of charge PORON® Foam Washers samples

CB Frost will supply free of charge a small sample of Poron® Urethane Foam to your required thickness for testing before committing to an order.


Tooling continues to be very important in the manufacture of die cut washers. Thanks to the company's long-standing history, we work with a variety of well-established tool makers in the West Midlands region.


CB Frost produce large amounts of Poron® Urethane Foam washers every year and cater for small, medium, and large runs. Our manufacturing range includes Die Cut, Water Jet cut, Kiss cut, and High-Speed cutting processes providing our customers with a vast array of options dependent on the applications requirements.

Poron® Urethane Foam washers are manufactured at our site in Nechells, Birmingham based in the West Midlands.


  • Plain or adhesive backed Washers

  • Double sided adhesive backed Washers

  • Kiss Cut Washers (Supplied on a roll)

  • Water Jet Cut Washer when using a thicker material

  • UV Stable

  • Low Outgassing



PORON® Foam Washers thicknesses

0.79mm, 1.14mm, 1.57mm, 2.36mm, 3.18mm, 4.78mm, 6.35mm, 9.53mm and 12.7mm

Additional thickness available upon request

PORON® Foam Washers Grades

4701-40, 4701-50 and 4701-60

We have the capabilities to convert PORON® Foam Washers into various shapes/strips/tapes etc, please click on the below for further details or visit our products section within the website.


PORON® Foam Strip

View Product


PORON® Foam Gaskets

View Product


PORON® Foam Sheeting

View Product


Please enter your name.
Please enter a subject.
Please enter a valid phone number.
Please enter a message.

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