Bare foam pigs are primarily used for drying and sweeping of loose debris, gauging of internal pipeline conditions before extensive pigging, sealing behind stuck pig, batching operations, and product removal. Standard models are available in 2, 5 and 8 pound per cubic foot density. The foam pigs are constructed from open-cell polyurethane with a durable polyurethane elastomer coating on base. Wirebrush foam pigs are primarily used to clean pipe and hose lines with buildup or debris in new construction and routine maintenance. Coated models are used for regular wiping and general cleaning.