Mechanical couplings were first developed in the 1920's and evolved
into Grooved Mechanical Couplings during the 1950's & 60's.
This revolution was further spurred in the latter half of the 20th
century by advanced engineering and innovative materials such as
Ductile Iron and EPDM elastomers.
Past to Present
The history of Shurjoint dates back to 1974, when the founders
produced their first grooved couplings. These first couplings were
produced from malleable iron, the casting material of choice at
this time. Before long foundry production was converted to ductile
iron. Ductile iron was the ideal material, providing for precision
castings and superior strength, without the need for further heat
treatment. EPDM (ethylene propylene diene monomer) provided a great
advancement in synthetic rubber elastomer compounds. This new
compound offered a service life equal to or in some cases longer
than that of carbon steel pipe. EPDM was an ideal gasket material
for grooved piping systems.