The neoprene closed cell sponge can be cut in bands or forms of all kinds. It is also available with an adhesive backing.


3R 840 is recommended for the applications in which a weak absorption of water and air are necessary. It is alos used to seal parts.


Technical Data

Polymer Type Neoprene/EPDM/SBR
Color Black
Density (pcf) 6 ± 2
Temperature Limit, °F -40°C to 90°C (-40°F to 200°F)
Tensile Strength, psi 75
Elongation minimum, % 125
Tear, lbs/in 9.6
Compression Deflection @ 50% (%) = 40
Moisture absorption < 5%
compression Deflection @ 25% 2 - 5 psi
N.B. The information, details and values indicated are to the best of our knowledge. We recommend to conduct tests according to local conditions. The data is subject to some variations without notice.