67-72 Chevy/GMC Large Rear Window Gasket w/ Trim Groove. This rear glass gasket is used with 67-72 Chevy trucks with the factory chrome trim around the glass. Glass is easily installed by putting the seal on the glass first, then using the "rope-in method" starting at the bottom and working to the top pulling the rope from inside the cab. Gasket is constructed from ozone resistant EPDM and made to original OE specs. Limited Lifetime Manufacture Warranty.