EPDM O-Ring Splicing Kit, 70A Durometer, Black, Standard Sizes, 5 Pieces, 7 Feet Each Made of ethylene propylene diene monomer (EPDM) rubber for use with a variety of chemicals and environments and has a durometer (hardness) of 70A Splicing Kit includes 5 pieces of O-ring cord in standard cross sections, 7 feet of cord per piece Plastic (Color may vary) box with lid card, cord stock, splicing jig, cutting tool, and adhesive For use across a wide temperature range from -67 degrees F (-55 degrees C) to 257 degrees F (125 degrees C)