Below is a list of Vinyl Tubing manufacturers from Skowhegan, Maine. Vinyl tubing products are hollow channels that are completely or primarily constructed of vinyl plastic. The word vinyl describes any material that belongs to the vinyl group of chemicals. The most commonly produced and used vinyl-based plastic product is polyvinyl chloride, or PVC. PVC is a versatile, strong, durable plastic that can be formed into many shapes and used for many purposes.