A Rod Seal made of a durable plastic compound. It is installed on the piston rod of a pull-down cylinder. The seal fits snugly around the piston rod and the cylinder bore to create a watertight seal. The rod plastic seal protects the piston rod from wear and tear.Attributes:• Manufactured with Plastic which gives excellent corrosion resistance• Manufactured to precise specifications and is built for durability and reliabilityApplications:A Rod Seal prevents fluid from leaking out of the pull-down cylinder and reduces friction between the rod and cylinder wall.