Single Cartridge Seal (AST70)
The AST70 is a simple-to-install, unitized cartridge mounted, balanced, multiple spring seal that requires no measuring for installation. It’s the basic mechanical seal of choice for ANSI pumps (including enlarged bore seal chambers), vertical pumps, split case pumps, and many more.
Product
Details
Field Rebuildable
No more waiting for seal repairs, and no more worries about installing exchange seals that might have previously held hazardous materials because the AST70 is easy-to-rebuild on-site using standard tools.
Easy Replacement on Split Case and Vertical Pumps
No teardown required. Just slide the seal over the end of the shaft.
No Measurement Required
Simply slide the seal onto the shaft, bolt down the gland, tighten the set screws, and remove the centering blocks.
Easy Impeller Adjustment
Adjust impeller clearance without removing the seal or dismantling the pump.
Off-The-Shelf…
AST70 seals are available off-the-shelf to fit most ANSI pumps, including enlarged bore pumps, without modification. Seals are in stock to fit many split case, positive displacement, and vertical turbine pumps.
Or Engineered
We design and build special AST70 seals for vertical turbine pumps, large split case pumps, and other systems that require more than a standard seal. Rebuild parts are still off-the-shelf.