EPDM sponge: properties, densities and applications


EPDM sponge rubber is a widely-used material across the world and forms the foundations for many products in our day-to-day lives. From the hose pipe used to water your garden to the material used under your house’s roof tiles, EPDM is a versatile material that has multiple uses across a variety of sectors.

garden hose epdm

EPDM sponge comes in many forms and has been adapted over the years to fit a variety of different purposes. Each EPDM variation has different chemical properties which produce alternate results. Properties such as temperature range, water absorption, flame resistance and environmental protection can be tested to ensure that the EPDM material is utilised in its appropriate form.


Here at Alanto, we have been supplying industries with EPDM sponge products for over a decade and have extensive knowledge and experience in its uses, properties, densities and applications.

A simple resource to help you decide which variation of EPDM is best for your chosen application


Type of EPDM Sponge Density Key Properties Application
Expanded EPDM Sponge
70-100 kg/m3 Anti-ageing
Wide temperature range
Halogen, CFC & HCFC free
Open cell EPDM sponge
70- 110 kg/m3 Self-extinguishing
CFC & HCFC free
Temperature range -40 °C to 120°C
Vibration dampening
Soft Expanded EPDM/
Natural Sponge Rubber
115-115 kg/m3 Flame resistant
Performs in moderate temperatures
CFC& HCFC free
Heating and ventilation
Expanded EPDM/
Natural Sponge Rubber
270-330 kg/m3 Water absorption percentage of 1-2%
Impermeable to wind and air
Electrical resistance
Electrical appliances
High Temperature EPDM
Sponge Rubber
55-75 kg/m3 Self-extinguishing
High Ozone resistance with no cracking
Temperature range -100°C to 150°C
Fire safety equipment
Eco Expanded EPDM
Sponge Rubber
100-140 kg/m3 Sulphur and plasticiser free
Flame resistant
CFC, halogen, HCFC free
Packaging and logistics

*Please note that this is only a guide. Always seek advice to ensure your EPDM rubber is fit for its intended purpose.


Alanto Ltd can advise on which EPDM is best suited for each sector. Click here to find out more details about the technical specifications of the EPDM rubber that Alanto supply.