Specification Grade Silicones

ASTM Silicone Solid Sheet and Uncured Silicone Compound

ElastaPro makes ASTM D1056 silicones. These medium-density closed cell silicone sponge materials are flexible and can handle a wide temperature range. With their low compression set, our ASTM D1056 silicones can be compressed for long periods of time and still return to their original shape.

What is an ASTM D1056 Silicone?

ASTM D1056 covers flexible cellular rubber products known as sponge rubber and expanded rubber; however, it does not apply to latex foam rubber or ebonite cellular rubber.

ASTM D1056 silicones are categorized by types, classes, suffixes, and grades:

  • Types 1 and 2
  • Classes A, B, C, and D
  • Grades 0, 1, 2, 3, 4, and 5

The various grades of this cellular rubber are subjected to the following tests:

  • accelerated aging tests
  • compression-deflection tests
  • oil-immersion test (open-cell sponge)
  • fluid immersion tests (closed cell)
  • water absorption test
  • density tests
  • low-temperature flex test.

Do you need ASTM D1056 silicones? Contact ElastaPro.