Rod Wiper—Polyurethane, double lip type wiper designed to protect the piston rod, bearing and rod seal, is standard for all rod sizes. Also, metallic scrapers and Viton wipers are available for all rod sizes. 3. Bolted Rod Gland Cartridges—Heavy wall, ductile iron bearing is accurately piloted in head to assure perfect alignment, designed to accept a variety of seal styles. With certain exceptions, the cartridges can be removed without removing mounts or tie rod nuts.This eliminates the necessity of cylinder disassembly to replace the rod seals or rod bearing. Bearings are held in place with bolted steel retainer plates. Bearing used for a given rod size are interchangeable into any cylinder bore with the same rod diameter. a. Rod Seal—Polyurethane compound, flexible lip type rod seal has excellent abrasion resistance and is wear compensating. Inherent characteristics of the material and design assure leak proof performance and long life. b. Rod Bearing—Ductile iron material insures low friction, high load capabilities and long life