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).