Who we are
With locations in Toronto, Ontario and
Winchester, Tennessee, Hamilton Kent is a
multinational manufacturer and distributor
of resilient-rubber, watertight, sealing
systems and components. Focusing primarily
upon seals for use with infrastructure pipe
systems, we provide a complete package—from
design and development, through production
and testing, to warehousing and shipping.
As an ISO 9001:2000-certified company,
quality permeates throughout all aspects
of Hamilton Kent. The proof of Hamilton
Kent’s commitment to quality lies in the
numerous approvals that we have received
from both national and international
organizations, such as ASTM, CSA, UL,
NSF, BS, DOT and AWWA.
What we do
Our custom manufacturing facility provides a diverse
selection of molded and fabricated rubber products such
as solar heating panels, industrial grade door seals,
ladder foot-inserts, belt-guides, joint wraps, transformer
seals and many, many more. Engineering and design assistance from our technical department is readily available when your special need arises.
For the pipe producer, Hamilton Kent offers an extensive
line of gaskets—from simple o-rings to patented,
pre-lubricated profile gaskets, such as the Tylox®
SuperSeal. Hamilton Kent also has an extensive array
of butyl-sealants, pipe joint lubricants, pipe plugs
and other pipe related products.
For the manhole and/or structure producer, Hamilton Kent
offers not only a variety of riser sealing products, but
also a wide selection of pipe-to-structure connectors, for
both cast-in or cored/formed hole processes. We are also
the exclusive North American supplier of The Lifespan
System, a watertight, corrosion-resistant manhole access
frame, cover and adjustment-ring system.
For civil engineering applications, Hamilton Kent produces
a variety of expansion seals for bridges and pavement.
How we do it
Hamilton Kent’s compression mold department utilizes
a bank of 18 presses, with pressure ranges from 50 Tons
to 650 Tons and platen sizes from 18” x 18” to 42” x 42”.
Hamilton Kent has 4 extrusion lines, 3 with micro-wave/hot-air
curing and 1 with salt bath curing. Utilizing single or dual-head
extrusion techniques, HK’s extrusion department can produce
continuous strip, in single or dualdurometer format, at up to
250Kg per hour and up to 13” wide profiles.
Once a rubber product has been molded or extruded,
Hamilton Kent’s fabrication department isable to offer
a number of finishing services to ensure you receive the
product to your specification.
Hamilton Kent’s Injection Mold department utilizes
Five machines, with up to 400 Ton clamping force and
mold sizes up to 32”x32”x10”, with volume capacity up
to 366 cu.in.
As well as offering a selection of standard compounds,
Hamilton Kent, utilizing its in-house compound development
group, is able to formulate rubber compounds to meet the
physical properties required by your specific application.
Typical “standard” compounds include, but are not limited
• Polyisoprene Rubber (IR)
• Ethylene Propylene Diomene Monomer (EPDM)
• Chloroprene / Neoprene (CR)
• Nitrile / Buna (NBR)
• StyraButadiene (SBR)
Where we came from
Founded in Kent, Ohio, molding rubber parts for the war effort
1946 HK develops initial design for rubber gaskets for concrete pipe, marketed as Type C Gasket
1957 Canadian manufacturing plant opened (Cooksville)
1981 Canadian manufacturing transferred to new plant (Toronto)
1985 HK splits into two separate companies HK-USA and HK-Canada
1987 1987 HK-Canada begins development of Pre-Lubricated gasket for Single-offset Jointed Concrete Pipe
1990 Pre-lubricated gasket product introduced into Canadian market as Tylox® SuperSeal™
1993 Tylox® SuperSeal™ introduced into U.S. market
1994 HK-USA liquidates
1998 Toronto plant expands to increase production capacity by 33% and enlarge the distribution center
2001 HK acquires assets of NC Rubber Products, Kitchener, Ontario. Plant upgraded to provide additional production and warehouse facilities
2006 HK-Canada forms HK LLC, a US-based company, which then acquires boot connector assets of International Precast Supply Haverhill, Mass; adding cast-in and mechanically installed boot connectors to product line
2007 HK builds state-of-the art manufacturing facility and distribution center in Winchester, Tennessee. U.S. distribution and manufacturing for TSS transferred from Toronto
2008 HK closes Reno, Nevada facility, and replaces it with larger Regional Distribution Facility in Tracy, California. Boot manufacturing transferred to Winchester, TN plant from Haverhill, which is then closed. Kitchener plant is closed and production transferred to Toronto
2009 HK begins selling and manufacturing The Lifespan System
2011 HK closes Tracey distribution facility, shifting distribution to the Winchester, TN plant