AR plunger pumps are designed for a wide variety of industrial applications. Constructed with die-cast bodies and feature a brass head. Internal components include special thick solid ceramic plungers for long life and durability. Precision cast crank case cooling fins are anodized for maximum heat dissipation. Oversized bearings assure proper shaft alignment and maximum life. Valve cages special design provides positive seating and extended life. Connecting rods are either a special alloy aluminum or bronze at higher pressures, oversized for strength and load disbursement. Seals: high pressure - “V” style (D-1) Buna-N (cotton duct weave base) strong and tightens under load. Low pressure - “U” cup double lip Buna-N. Support guides - machined brass one-piece construction to assure proper plunger alignment and to maximize packing and seal life.