257 in, Minimum Installation Depth 7/16 in, Overall Length 19/64 in, System of Measurement Inch, Thread Direction Right Hand, Thread Type Coarse, Fine.
Neoprene rubber, also called by its chemical name chloroprene, was developed by DuPont in the 1930s to meet the demand for a rubber material with chemical resistance.
Available in 6 thicknesses (1/16", 1/8", 3/16", 1/4", 3/8", 1/2") E.D. It is highly recommended for applications where the elastomer will have excessive exposure to the environment.