Advanced Sealing Technology
Advanced Sealing Technology manufactures a complete line of cartridge and component mechanical seals for process pumps. The AST 70 single cartridge seal has become the industry standard for harsh applications.
Field Re-buildable Using Standard Tools
No more waiting for seal repairs
No Measurement Required
Simply slide the seal onto the shaft, bolt down the gland, tighten the set screws, and remove the centering blocks.
Easy Replacement on Split Case and Vertical Pumps
No pump teardown required. Just slide the seal over the end of the shaft.
In Stock Availability
Fits most ANSI pumps, including large bore stuffing boxes without modification. Seals are in stock in many sizes (shaft/shaft sleeve diameter).