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Micarta Dielectric Sheets

Brown Micarta phenolic laminate sheet for electrical insulation

Micarta Dielectric Sheets

Benchmark maintains stock of Micarta material and has CNC routers in house to machine the material on an expedited basis as required.

Micarta® plastics are an industrial laminated plastic created with resin-based thermoset materials reinforced with fiberglass, cotton cloth, paper, carbon fiber or other substrates by applying heat and pressure to these layers. There are several resins for Micarta laminates, which include Phenolic, epoxy, silicone, and melamine. The Micarta laminates have excellent strength, and a strong resistance to heat, stress, and corrosive chemicals. Micarta laminates are commonly used in electrical insulation, aerospace, automotive, and several other applications. Benchmark Industrial Plastics have these laminates in raw material form and specialize in close tolerance Micarta machining

Proven Applications For Micarta:

Key Properties Of Micarta:

Common Micarta Laminate Grades

These laminates are grouped by their reinforcement and resin. Each combination gives a different balance of strength, dielectric performance and machinability, so the right grade depends on where the part will be used.

  • Paper phenolic – economical, good electrical insulation for terminal boards and spacers
  • Cotton phenolic – tough and easy to machine, used for gears, wear parts and insulating washers
  • Glass epoxy – high mechanical strength and excellent dielectric properties with low moisture absorption
  • Glass melamine – good arc and flame resistance for switchgear components
  • Glass silicone – for higher-temperature electrical applications

Tell us the application and we will recommend a grade.

Machined Micarta parts

Benchmark machines these laminates on in-house CNC routers, so parts can be cut to tight tolerances and turned around quickly. Typical parts include:

  • Insulating washers, sleeves and bushings for electrically isolating bolted steel connections
  • Spacers, standoffs and terminal boards
  • Wear strips, guides and slide pads
  • Isolation plates between dissimilar metals

Ordering

Send a drawing or DXF file with the grade, thickness and quantity and we will quote the parts. Call 800 580 4195 or use the form below.