1954 - 1955 GMC 350-24 Windshield Weatherstrip Seal With Trim Groove For Steel Trim. This rear window seal fits the 1st series. This application goes first on the glass and is installed using the rope-in method. The trim groove requires you to re-use your chrome trim. Made from ozone resistant EPDM rubber and from the same OE specs as the original for an authentic fit and finish.