Polymer replaces metal in connector coupling nuts
A
Victrex USA product story
Edited by the Engineeringtalk editorial team
Apr 4, 2003
To meet the need for a cost-effective alternative to metal coupling nuts in electrical connectors, Technique Engineering decided to injection mould the threaded nuts using Victrex Peek polymer.
To meet the need for a cost-effective alternative to metal coupling nuts used in electrical connectors, Technique Engineering of Lake Forest IL decided to injection mould the threaded nuts using Victrex Peek polymer, a high performance thermoplastic.
The polymer was chosen for its outstanding combination of properties including chemical resistance, high temperature resistance, toughness and strength.
"Victrex Peek polymer has proven to be a cost-effective replacement for metal nuts that must be machined one at a time and which may require secondary finishing operations", says Rudy Avramovich, owner of Technique Engineering.
"The polymer exhibits better resistance to chemicals than stainless steel, and because the fittings can be injection moulded instead of machined, they are much more cost effective.
Fittings such as nuts are easier to manufacture out of Peek polymer as each nut can be moulded to exact dimensions every time.
In addition, we can supply the polymer nuts in a wide variety of colours whereas metal nuts have a very limited colour selection".
Electrical connectors are used in a variety of industries.
"When connecting cables and wires in the food industry, corrosion resistance is a major requirement", says Avramovich.
"For example, the coupling nuts must be able to maintain their mechanical properties in harsh chemical washdown conditions.
Victrex Peek polymer can withstand an extremely broad range of chemicals even at elevated temperatures".
"The polymer is extremely tough and has excellent impact resistance and fatigue strength over a wide range of temperatures", adds Avramovich.
"It retains good mechanical properties at elevated temperatures".
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