Rotary Shaft Seals Catalog

CinchSeal Rotary Shaft Seals

High Speed Mechanical Seals for ANSI Pumps

AST 70
Single Cartridge Seal

A balanced, cartridge-mounted mechanical seal that installs easily with no measuring required. It’s ideal for ANSI, vertical, split case pumps, and more.

Temperature Range: Up to 500° depending on O-ring material

Pressure Range: 28 in (710 mm) Hg Vacuum to 400 PSIG (28 bar) maximum, depending on shaft size & speed

AST 80
Dual Cartridge Seal

Double balanced seal that an be used as a Double Seal, Tandem Seal, or Spare Seal. Cartridge seal assembly for easy installation.

Temperature Range: Up to 500° depending on O-ring material

Pressure Range: 28 in (710 mm) Hg Vacuum to 400 PSIG (28 bar) maximum, depending on shaft size & speed

AST 50
Outside Multi-Spring Component Seal

Single outside mechanical seal ideal for corrosive or low-pressure applications. No metal in contact with the fluid, isolated springs, and a preset compression.

Temperature Range: Up to 400° depending on O-ring material

Pressure Range: 28 in (710 mm) Hg Vacuum to 150 PSIG (10 bar) maximum, depending on shaft size & speed

AST 60
Inside Multi-Spring Component Seal

The AST60 is a simple upgrade for existing OEM seal applications. It’s hydraulically balanced and can’t fret the pump shaft.

Temperature Range: Up to 500° depending on O-ring material 

Pressure Range: 28 in (710 mm) Hg Vacuum to 400 PSIG (28 bar) maximum, depending on shaft size & speed

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Rotary Shaft Seals