This standard provides the typical properties of a range of elastomers most frequently used for tube and cover compounds in the manufacture of piping expansion joints. It is an update of Standard FSA-NMJ-703-99, Specifications of Elastomers Used in Piping Systems Non-Metallic Expansion Joints. Properties listed have shown to provide acceptable performance in applications for which the specific elastomer has been recommended. The Standard is not intended to limit or restrict the use of materials to those listed. Other materials may be developed in the future that will prove to be suitable as well. ©2011, 11 Pages.