Groove placed around windows (most commonly car windows) as a seal
A glass run channel is a groove, normally made of rubber or plastic, that is found around windows (most commonly car windows).[1][2][3] The primary purpose of a glass run channel is to provide a seal for the window.
^[1]TA HU ENTERPRISE CO LTD, Taiwan Glass Run Channel Friday 20 April 2012
^[2]Car Parts Discount, 1959 Chevy Truck Door Window Glass Run Channel Friday 20 April 2012
^[3]Car Parts Discount, 1959 Chevy Truck Door Window Glass Run Channel Friday 20 April 2012