A small piece of neoprene, EPDM rubber, silicone, or other material placed in a frame to distribute the weight of the glass, to center the glass vertically within the frame, and to prevent glass-to-metal contact. Found on http://www.encyclo.co.uk/local/21054
A small piece of neoprene, EPDM rubber, silicone, or other material placed in a frame to distribute the weight of the glass, to center the glass vertically within the frame, and to prevent glass-to-metal contact.