Internal-gear pump design. Stainless steel construction. Dimensionally interchangeable with most other gear pumps. Modular, bolt-on port design provides a wide range of port styles & sizes. Choice of 90° or 180° port positions. Modular seal chamber provides a choice of packing, mechanical seal or cartridge seal - without changing major pump components. Standard shaft sizes let you use seals you probably already have for other rotating equipment. Choice of nominal inch or metric shafts. Back pull-out design greatly reduces downtime for service - the pump can be repaired without disturbing piping or shaft alignment. Inline seal access design reduces seal maintenance time - the seal can be removed without disturbing the piping or shaft alignment. Many optional features are available to meet your specific needs: jackets for temperature control various bushing options internal and return-to-tank relief valves hardened components for abrasion-resistance