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Insulation Plug for Electrical Industry

Injection Molding of Polyester Insulation Plug for the Electric Power IndustryRequiring a component that is both UL listed, and offers high electrical performance such as arc and track resistance, a manufacturer of power supplies contacted Woodland Plastics to utilize our thermoset molding services for their insulation plug components.

With four individual components varying in size, but sharing dimensional characteristics, Woodland Plastics molds the insulation plugs in a 4-cavity family mold using a 150-ton thermoset injection molding press. Parts are molded out of BMC 620 Red, a thermoset polyester material, and deflashed before being shipped to a customer plant in Mexico.

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Project Highlights for Insulation Plug

Product Description This insulation plug is used within a power supply application.
Custom Injection Molding Capabilities Applied/Processes
Mold Design
  • Managed Mold Build
Thermoset Injection Molding
Equipment Used to Manufacture Part Single Cavity Mold
150 Ton Thermoset Injection Molding Machine
Overall Part Dimensions
Male Insulation Crimp:
Length: 4.750"
O.D.: Ø2.428"
I.D.: Ø1.875"
Male Insulation Pressure:
Length: 3.00"
O.D.: Ø2.428"
I.D.: Ø1.875"
Female Insulation Crimp:
Length: 3.375"
O.D.: Ø2.428"
I.D.: Ø1.875"
Female Insulation Pressure:
Length: 1.6562"
O.D.: Ø2.428"
I.D.: Ø1.875"
Tightest Tolerances Concentricity of Ø.004"
Material Used Polyester BMC 620
Color Red
In process testing/inspection performed Dimensional Inspection/SPC
Estimated Part Weight
275 Grams
210 Grams
162 Grams
105 Grams
Industry for Use Electrical
Standards Met Customer supplied print, CAD Drawing
Product Name M&F Insulation Crimp, M&F Insulation Pressure

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