"The Mechanical Seal Experts"
Single Cartridge Mechanical Seals
The AST 70 is a simple-to-install, unitized cartridge mounted, balanced, multiple spring seal which requires no measuring for installation. It is the basic mechanical seal of choice for ANSI pumps (including enlarged bore seal chambers), vertical pumps, split case pumps, and many more.
The AST 7023 seal is the off-the-shelf solution for hot liquid sealing with ANSI Plan 7323 (API Plan 23). Its built-in pumping ring fits in enlarged bore seal chambers on popular ANSI pumps.
Dual Cartridge Mechanical Seals
The AST 80 dual mechanical seal incorporates liquid shear pumping to remove heat from the seal faces, and can be operated with a pressurized barrier or non-pressurized buffer fluid system.
The AST 80M Seal is a rugged dual mechanical seal built for use in mixers, agitators, double-ended pumps, and other rotating equipment in demanding service. With its large internal clearances, the AST 80M tolerates shaft runout and end play that would make another seal fail.