The AST50 is a cost-effective, easy-to-install single outside mechanical seal ideal for corrosive or low-pressure applications. Designed for non-metallic pumps like Fybroc and Flowserve GRP, it features no metal in contact with the fluid, isolated springs, and a preset compression. Its internally balanced design eliminates the need for expensive sleeves or pump modifications, making it a practical alternative to exotic metal seals and food-grade applications requiring sanitation.
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.
No Measurement Required
Simply slide the seal onto the shaft, bolt down the gland, tighten the set screws, and remove the centering blocks.
Ready to Ship
AST50 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.
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Rotary Shaft Seals
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