73-87 Chevy/GMC Rear Glass Gasket without Trim Groove. This rear glass gasket is used with 73-87 Chevy trucks that do not have a 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.