Deevin ‘W’ Seal Expansion Joint Expansion Joint is a manufactured from extruded Neoprene. The material conforms to ASTM D2628 Modified. ‘W’ Seal is ideal for Metro Rail Track, Parking Structures, simple span structures or other structures where the movement is Medium and the openings range between 1” (inch) and 5” (inches). ‘W’ Seal Expansion Joint has been approved by numerous Archit... https://deevinss.com/w-seal-expansion-joint/