Spacer discs are constructed of high-grade abrasion and chemical resistant solid-cast polyurethane material. Sizes 2” through 14” are manufactured for center-rod-type pigs with center-hole, and sizes 16” through 48” are manufactured with bolting pattern configuration. Although primarily used with the MD and MDB series of pigs, spacer discs can be added to any steel pig in conjunction with guide and sealing discs, as well as, in lieu of steel spool spacers normally found on multiple cup or disc configurations. Options include neoprene, viton, epdm, buna-n or other elastomer compounds for special services; varying durometers (hardness); customized dimensions for special pigging applications.
