U.S. Seal Mfg. is one of the leading suppliers of mechanical pump seals in the United States. For nearly 50 years,they have provided quality products through Their network of distinguished nationwide distributors of which we are proud to be one

Made from the highest quality materials, the U.S. Seal product line meets or exceeds most OEM specifications. Our mechanical seals promise long life, reduce maintenance, and provide automatic self-adjustment.
Head & Seat Types
We hope that you will use this Web-Site to research your seal inquiry. If you are unable to locate your answer, please call us at 610-432-1515 or 1-800-745-9885 and one of our helpful staff will be glad to assist you.

U.S. Seal Mfg. offers a complete line of quality seals for your replacement needs.
ABSOLUTE SEALING. Resulting in less pumpage loss, cleaner facility environment, reduced fire hazard, no danger from fumes and no contamination of the fluid being handled.

NO RUBBING FRICTION BETWEEN SHAFT AND SEAL PARTS. Eliminate expensive shaft and sleeve replacement by replacing your old packing with new state-of-the-art U.S. Seal Mechanical Seals.

GREATER FLEXIBILITY OF SEALS MEANS LONGER SERVICE LIFE. Seals have more flexibility than packing and are able to compensate for shaft whip, axial and radial end play, as well as vibration and wear of the sealing faces.

LESS FRICTION MEANS VALUABLE POWER SAVINGS. Seals create less friction than packing and therefore require less horsepower.

PRECISION LAPPED SEALING SURFACES. Positively control leakage and eliminate "break in" runs.


EXTREME FLAT SURFACES OF MATING FACES. Care is taken to furnish precision lapped sealing surfaces with a flatness within three light bands maintaining the necessary face film lubrication.

MATERIALS OF CONSTRUCTION. TFE, AFLAS®, EPR and VITON® materials are available for those applications where NEOPRENE and BUNA are not compatible with the process fluid. Metal parts are normally made of brass, plated steel or stainless steel, but other alloys, such as Monel® or Hastelloy® can be supplied. Seat materials are available in a wide selection.

Typical Seal Installation
Why U.S. Seal

Swimming Pool Pumps
Centrifugal Pumps
Rotary Pumps
Jet Pumps
Turbine Pumps
Petrochemical Pumps
Gearbox Seals

Typical Seal Limits
Shaft Size: .312" to 5.50"
Temperatures: -75° to +450° F.
Pressure: 75 to 200 P.S.I

AFLAS® is a registered trademark of ASAHI Glass Co., Ltd.
Monel® is a registered trademark of Huntington Alloys Corp.
Hastelloy® is a registered trademark of Haynes International, Inc.
U.S. Seal Mfg. is a trademark of U.S. Seal Mfg
By Manufacturer
Seal Cross-reference
By Shaft Size