JES Piston with Viton O-Ring for Sausage and Bulk Caulk Guns, 5 Pack

High quality replacement piston for JES Innovations sausage and bulk caulk guns. It replaces worn and leaking pistons. Durable construction ensures consistent performance. Includes a Viton O-ring for a chemical resistant seal, perfect for low to medium viscosity materials. Also fits other standard sausage and bulk caulk guns with 2-in diameter barrel.