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Our Beginnings
Gorman
Co., Inc. was organized in 1963 by Gerald W. Gorman, who had been in
all types of mechanical seal and packing manufacturing for
approximately 18 years. Operations were started with staff members who
brought a combined experience of six decades in the manufacture of
hydraulic seals. Now, nearing our fourth decade of operations, we are
still committed to providing all of our customers with quality
products and excellent service from our 85 years of combined
experience in management.
Seals & Packing Design &
Manufacturing
For any seal or packing design, Gorman Co., Inc.
has complete tooling facilities to make the dies and presses to mold
the products, giving the manufacturer a turn-key job from design to
delivery in a range of sizes up to 45” in diameter. Gorman Co., Inc.
is proud to be a manufacturer of quality sealing devices. We are
pleased to serve many customers all across the United States of
America and Canada, as well as from many other international locations
as well. Gorman Co., Inc. seals are now being supplied to Original
Equipment Manufacturers in the following fields: Hydraulic Freight and
Passenger Elevators, Material Handling Equipment (ex. forklifts),
Refuse Handling Equipment, Hydraulic Boring Machines, Trenching
Machines, Earth Moving Equipment, Automotive, Hydraulic Cylinder
Manufacturers, and Motorcycles (ex. fork seals).
Seals for Original Equipment Mfgs.
The company was organized to furnish Original
Equipment Manufacturers in all phases of hydraulic industry. Gorman
Pressure Balanced Seals were developed and patented in the
late sixties to provide a multiple lip floating seal molded in one
unit for a more efficient seal than the V or chevron type packing. For
a Multiple Lip Seal to accomplish this, the following developments
took place:
- The seal groove had to be at least .030”
longer than the seal itself for a completely non-adjustable seal.
- The lips – both I.D. and O.D. – required
molded interference.
- Molded diagonal ribs inside the seal to
provide internal spring action requiring no gland pressure for both
static and dynamic sealing.
Advantages of P-B Seals
Pressure Balanced Seals have the following
advantages as the name implies: The hydraulic forced are controlled in
the seal cavity by metering enough fluid pressure to the internal part
of the seal, to counter-balance the hydraulic forces crushing on the
seal itself. This provides low breakaway friction and eliminates seal
extrusion on normal clearance between back-up and cylinder rod or
piston and cylinder.
Break-away Friction Is Less
This seal passes the laboratory and proving
ground test of a major automobile manufacturer. In comparing the
Pressure Balanced Seals with a conventional O-ring seal, the breakaway
friction is less. At 2000 p.s.i., the O-ring had approximately 28 lbs.
break-away friction and the Gorman Pressure Balanced Seal had 18 lbs.
of break-away friction. The fore-going design features molded into the
highest quality materials available result in Gorman Pressure Balanced
Seals giving maximum service and long life. As we continue our
commitment to quality and friendly service, we now offer a new G+
sealing material for hydraulic packing, offering longer life and
improved control of low speed vibration. |