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Rubberlite’s Interactive Technical Guide will assist you in identifying Armacel®, Monarch® and Ensolite® brand materials that could be suited to meet your product requirements. The mission of this design tool is to provide several material options based upon your application needs.

Compression Deflection @ 25% (CD) ASTM D1056

The measure of the hardness of a cellular rubber product. In other words, the force required to compress a material 25% of its original thickness. It can be expressed in lb/in2 (pounds per square inch) or kPa.

Compression Set ASTM D1056

The extent to which a material is permanently deformed by a prolonged compressive load, most commonly expressed as a percentage of original height. The test method is for room temperature (22hrs @ 73 degrees F).


The weight in solids of a unit volume of material expressed in pounds per cubic foot (PCF) or grams per cubic centimeter (g/cm3). In other words, it is the ratio of the mass of a body to its volume.


The extension between bench marks produced by a tensile force applied to a specimen. Expressed as a percentage, this test is used to measure the length of stretch in a material before it breaks.

Resilience ASTM D2632

A test to determine the shock absorption properties of a foam. On this test, a material is placed flat on an instrument and a weight is dropped onto it from a specified height. The amount of bounce is then taken from a scale to get the final value. The lower the value, the higher the shock absorption properties of the foam.

Tear Strength

A measure of how well a foam can withstand the effects of tearing, expressed in units of load per unit width. The most common methods used are ASTM D624 Die C which is a tear initiation test and ASTM D3574 Die F which is a tear propagation test.

Tensile Strength

The maximum pounds per square inch (psi) that a material can be stretched lengthwise without tearing, expressed as a percentage of the original length.