Bronze seal reduces wear on gear pumps.A new gear pump A Gear pump uses the meshing of gears to pump fluid by displacement. They are one of the most common types of pumps for hydraulic fluid power applications. Gear pumps however are also widely used in chemical installations to pump fluid with a certain viscosity. for compounders uses high-strength bronze instead of stainless steel stainless steel: see steel. stainless steel Any of a family of alloy steels usually containing 10–30% chromium. The presence of chromium, together with low carbon content, gives remarkable resistance to corrosion and heat. lot the air-cooled seal. The new seal design from PSI Polymer Systems, Inc. in Hickory Hickory, city, United States Hickory, city (1990 pop. 28,301), Burke and Catawba counties, W N.C., at the foot of the Blue Ridge Mts.; inc. 1870. It is a processing and trade center for an abundant agricultural region (grain, soybeans, poultry, hogs, , N.C., uses bronze's natural lubricity lu·bric·i·ty n. The quality or condition of being lubricious. [Late Latin l  bricit to reduce wear and save energy, PSI says. Ideally, there
should be no contact between the seal and gear shaft, but as gears and
bearings wear, the shaft and seal may come in contact. Stainless steel
will gall the gear shaft through a stick/slip action, while bronze
won't, PSI says. PSI, a supplier of screen changers and static
mixers, has built melt pumps about a year in sizes from 25 to over
10,000 lb/hr. Tel: (828) 345-6264, www.psi-polymersystems.com
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