All centrifugal pumps have a shaft seal installed. The purpose of these shaft seals is to stop the water or liquid that is pumped from leaking along the shaft. Understanding mechanical pump seal designs is very important. It teaches you how a basic mechanical seal works. So how do I change the seal on my swimming pool pump? Please understand! Some pump seals are installed a little differently in some swimming pool and spa pumps; however, the principle purpose of the seal is the same. And that is to stop leaks.

CW Marsh - CW Marsh offers the finest in leather mechanical packings for hydraulic and pneumatic systems.

Industrial Equipment - - Find everything industrial - from software to supplies, to services - you'll find all the latest information on all things industrial at Indutrial101.com

Walker Brothers - Walker Brothers Machinery Moving, Inc. has specialized in moving machinery throughout North America for more than three decades.

Casters - We carry a large and varied inventory of Industrial Casters and Heavy Duty Casters to save you both time and money

Mazak Laser Cutting Machines - MAZAK OPTONICS CORPORATION established a presence in the U.S. in 1987 for the marketing, sales, service, and support of Mazak laser cutting systems in North America.

Jergens - Cleveland, OH USA - Chuck jaws, Work holding, drill bushings, hand wheels, clamps, etc. On-line catalog and ordering.

Kentech Inc. - Real World Machine Shop Software

MachineCo - Montreal CANADA - Wide range of machinery. Located in Montreal, Canada

UK Based supplier of Belt Conveyors Roller Conveyors and a multitude of Conveyor Systems, AS Conveyor Systems.

Gear Technology - The complete guide to the gear industry. Here you'll find suppliers of machine tools, cutting tools, software, services, supplies and accessories--everything you need to manufacture gears.

Modern Machine Shop - Modern Machine Shop website with discussion forums, articles, etc.

Textured Laminate - Remington Laminations Inc. is your source for Textured Laminate, Textured Laminates, Mousepad Laminates, Heat Press Laminates, Vinyl Transfer Laminates and much more.