PORON® Urethane Foam

CB Frost are a preferred UK convertor of the Poron Urethane range of materials and have a relationship with Rogers corporation extending over 30 years.

Poron Urethane offers the flexibility required by designers to solve their pressing problems, from a gasketing, cushioning and sealing perspective.

A semi-closed cell material with excellent compression set resistance, low outgassing and non-fogging properties provides sealing solutions in a wide range of industries and applications.


Features and Benefits of PORON® Microcellular Polyurethanes

PORON® Cellular Polyurethane foams offer a broad range of design solutions for gasketing, sealing and energy absorption. Low compression set and low outgassing features make these foams ideal for applications in telecommunications, automotive, electronic, and other industrial market segments.

PORON Polyurethanes are flexible, high density, microcellular products that offer design engineers many outstanding features. PORON foams maintain excellent resistance to compression set, exhibit high resiliency, provide good vibration damping and impact absorption. Parts made from PORON foams continue to perform after constant
and repeated deflection. Components will not loosen and gasketing integrity will be maintained.


Excellent compression set resistance for durable,long-term performance.

Low-outgassing prevents component fogging,corrosion, and embrittlement.

Meets several flammability requirements including MVSS 302 and UL HBF.

Available in many densities, thicknesses, and surface finishes, providing wide design latitude.

Excellent performance over a broad temperature range (-40oC to 90oC).

Good chemical resistance.

Quality manufacturing provides consistent easy-to-process roll goods.

PORON® Urethane Foam thicknesses

Anything from 0.3mm up to 12.7mm

Specification Typical Values
Polymer: Urethane
Structure: Semi-Closed Cell
Colour: Black
Temp: -40/+90 °C

**Data as per our current stock grade

Fire Classification  


Typical applications include lighting (dust and water ingress seals; non-fogging), automotive (door panel seals), electronic devices and communications.

PORON® 4701-30 Polyurethane 

  • Very soft and easily compressed material
  • For use in flexible gasketing, gap filling and spring applications
  • Thickness range from 0.031" to 0.500" (0.79 mm to 12.7 mm)

PORON® 4701-40 Polyurethane 

  • Soft material
  • For wide variety of gasket and gap filling applications
  • Thickness range from 0.031" to 0.500" (0.79 mm to 12.7 mm)

PORON® 4701-50 Polyurethane 

  • Firm material for managing high energy impact
  • For use in gasket design
  • Thickness range from 0.031" to 0.500" (0.79 mm to 12.7 mm)

PORON® 4701-60 Polyurethane 

  • Very firm material for energy management solutions
  • For use in gasketing, spacers, bumpers and footpads
  • Thickness range from 0.031”to 0.250” (0.79 mm to 6.35 mm)

PORON® 4790-92 Polyurethane

  • Extra soft material
  • Slow rebound and very low closure force
  • Thickness range from 0.021" to 0.500" (0.53 mm to 12.7 mm)

PORON® 4790-79 Display Back Pad 

  • Multiple densities available for varying designs
  • For use in cushioning and shock absorption for device displays

PORON® AquaPro® Series Foams 

  • Includes products 4701-37 & 4701-41
  • Water sealing capabilities
  • Provides long-lasing protection
  • Thickness range from 0.15 - 12.7mm (.006 to .5 in)

PORON EVExtend® Material 

  • Designed specifically for use in EV/HEV applications
  • Excellent compression set
  • Thickness range from 0.039" to 0.118" (1 mm to 3 mm)

PORON® ShockPad Foam

  • Provides outstanding impact protection
  • Enables thinner than ever designs
  • Excellent compression set resistance

PORON® ShockSeal™ Foam

  • Conforms to some of the smallest and most intricate designs.
  • Excellent for impact protection
  • Ideal for thinner, larger LCD displays for cushioning, sealing and protection requirements
  • Available as thin as .5mm

PORON® V-0 Foam

  • Meets both UL94 V-0 and HBF flammability ratings
  • Excellent long term performance


  • Excellent compression set resistance

  • Low out gassing

  • UL94 approved

  • Good chemical resistance

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
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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