Multi spring type, are designed for heavy duty service involving high pressure and sliding velocities. This seal has positive drive arrangement. The seal is supplied as a cartridge unit and can be directly bolted to stuffing box. These seals are normally used in main oil pipelines, water injection pump and boiler feed water pump.
Carbon, SiC, TC
SS 316, Hastelloy C, Alloy 20
Independent of direction of rotation.
Choice of throttle bushing design : fixed floating,