An Expansion Welch Plug is a disc-shaped part that is used to provide a secure and tight fit in the roller assembly. Once in place, a force is applied to expand the plug create a tight fit within the hole, and maintain the proper alignment and positioning of the roller, allowing for smooth and efficient operation.Attributes:• Creates a reliable seal between the plug and the roller assembly• Offers high durability and good resistance to wear and tearApplications:An Expansion Welch Plug acts as a barrier, preventing any foreign materials from entering the roller assembly causing damage, and preventing the movements of the roller during the operation.