Santoprene®Â 591-56W175 is a soft, black thermoplastic Vulcanizate (TPV) in the thermoplastic elastomer (TPE) family. This material is designed for thin wall, architectural glazing and sealing application in the industry and consumer segments, and it has excellent resistance to compression set. This grade of Santoprene®Â TPV is shear-dependent and can be processed on conventional thermoplastics equipment for extrusion, thermoforming. It is designed for extruding thin sections with excellent definition (down to 0.33 mm [0.013''] radius) and long runs with minimal build-up of material on screen packs or narrow die sections. It is polyolefin based and completely recyclable.