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E/FOURREAU MIDSUN® insulating sheath for bird protection cables and busbars

The E/FOURREAU is a silicone sheath used to protect a variety of distribution and substation equipment up to 35 kV between phase and earth. This flexible silicone rubber sheath provides high quality electrical insulation for overhead distribution lines, cables and substation busbars.

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In stock
Size chart
Women's clothing size
Euro 32/34 36 38 40
USA 0/2 4 6 8
Bust(in) 31-32 33 34 36
Bust(cm) 80.5-82.5 84.5 87 92
Waist(in) 24-25 26 27 29
Waist(cm) 62.5-64.5 66.5 69 74
Hips(in) 34-35 36 37 39
Hips(cm) 87.5-89.5 91.5 94 99
How To Measure Your Bust

With your arms relaxed at your sides, measure around the fullest part of your chest.

How To Measure Your Waist

Measure around the narrowest part of your natural waist, generally around the belly button. To ensure a comfortable fit, keep one finger between the measuring tape and your body.

Cable diameter HT (mm)
  • from 5.03 mm to 6.35 mm (1 sheath of 15m)
  • from 6.35 mm to 11.35 mm (1 sheath of 15m)
  • from 12.75 mm to 18.82 mm (1 sheath of 15m)
  • from 20.47 mm to 25.40 mm (1 sheath of 15m)
  • from 25.40 mm to 30.38 mm (1 sheath of 15m)
  • from 31.75 mm to 36.25 mm (2 sheats of 7.5m)
  • from 38.20 mm to 44.07mm (2 sheats of 7.5m)
  • from 44.70 mm to 50.29 mm (2 sheats of 7.5m)
  • from 50.29 mm to 63.50 mm (5 sheats of 3m)
  • from 63.50 mm to 88.90 mm (5 sheats of 3m)
  • from 88.90 mm to 114.30 mm (5 sheats of 3m)

Characteristics of the range E/FOURREAU

MIDSUN® E/FOURREAU is used to provide an additional layer of electrical insulation to protect animals and birds. It is applicable to busbars and overhead lines of up to 35kV phase to earth.
The sheats are made out of an insulating silicone material suitable for harsh outdoor environment conditions for substations.

Installation instructions for E/FOURREAU sheats

The E/FOURREAU is manufactured with a slot to allow easy application without having to cut the electrical connections. The sheath is simply open and stretched, which allows it to slide quickly over the cable or busbar to be protected.
There is no thermal shrinkage required for its application. No tool other than a cutting tool to obtain an appropriate length is required.

The sheats are flexibles and adjustables, which makes them easy to apply and remove.

  1. Open the E/FOURREAU and wrap it around the conductor
  2. On horizontal busbar applications, wind it with the slit side down to limit the ingress of rainwater
  3. Once installed, ensure that the sheath is completely closed around the conductor.

Lifetime and guarantees

The products in the E/FOURREAU range have a shelf life of 5 years from the date of manufacture; they must be stored between 10°C and 27°C and for a relative humidity rate <75%).

Applied in accordance with the manufacturer's recommendations MIDSUN®, this product is guaranteed by the manufacturer for a minimum of 10 years.

Advantages of the E/FOURREAU range compared to conventional solutions

  •     Excellent UV resistance
  •     Excellent arc resistance
  •     Very good resistance to ozone
  •     Strong dielectric strength
  •     High thermal endurance over a long period of time: wide temperature range
  •     Good formatting
  •     High chemical resistance
  •     Increase in the line of flight
  •     Easy to set up
  •     No specific tools required
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Product Details
Product details
References Length (m) Diameter Ø (mm) Thickness (mm) Cables Ø (mm)
 AVI-FOU-006G 15 13 3 5.03  to  6.35
 AVI-FOU-011G 15 18 3 6.35  to  11.35
 AVI-FOU-019G 15 25 3 12.75  to  18.82
 AVI-FOU-025G 15 31 3 20.47  to  25.40
 AVI-FOU-030G 15 36 3 25.4  to  30.38
 AVI-FOU-036G 2 x 7.5 42 3 31.75  to  36.25
 AVI-FOU-044G 2 x 7.5 50 3 38.2  to  44.07
 AVI-FOU-050G 2 x 7.5 57 3 44.7  to  50.29
 AVI-FOU-063G 5 x 3 70 3 50.29  to  63.50
 AVI-FOU-089G 5 x 3 95 3 63.50  to  88.90
 AVI-FOU-114G 5 x 3 114.3 3 88.90  to  114.30


MIDSUN® Group is a North American manufacturer of RTV insulation, anti-corrosion silicone coatings and wildlife purlin covers. It is considered a dominant player in this niche market throughout the United States of America.

Founded in 1992, MIDSUN® has grown steadily with the sole objective of becoming the best supplier of products and services to the electric utility and telecommunications industries. In the relatively narrow niche of insulation and bird protection, MIDSUN® excels in terms of products, service, price, performance and delivery. Through its international network of distributors, MIDSUN® provides companies around the world with services and products that increase reliability and save companies millions of Euros in repairs.

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