Mylar Gasket
Mylar Gasket
By working with such a wide network of material suppliers and manufacturers, Advanced Seals & Gaskets Ltd are able to stock and convert a number of electrical insulation materials in the form of papers, resins, laminates and plastics. One of the many electrical insulation materials we can convert into gaskets is Mylar, also known as BoPET (Biaxially-oriented polyethylene terephthalate), Melinex and Hostaphan which is a polyester film made from stretched polyethylene terephthalate (PET).
Mylar Electrical insulation films are very thin and are measured in microns instead of mm like other plastics and are available in a choice of 12 to 500 microns and are manufactured in roll form at 914mm wide and in lengths of 25 meters up to 200 meters depending on thickness. These rolls of material can be laminated with a choice of adhesive coatings or foils prior to being converted into finished products including gaskets. Our in-house sales and production teams work closely with customers following their drawings or samples to create an exact match ensuring the production of the perfectly fitting gasket. Whether it’s a simple square or rectangular shape or a more bespoke gasket - we can offer a solution using one of our many presses and CNC machines.
Product Enquiry
For information on Mylar Gasket please complete the following quick enquiry or call us on +44(0)1384 252555.
Characteristics of Mylar Electrical Insulation
- Colour: transparent - milky white depending on grade
- Thickness: 12 - 500 microns
- Roll size: 914mm wide x 25 to 200 metres (depending on thickness)
- Resistances: moisture, solvents, oil and grease
- Dielectric Strength: 7000 volts/mil
- Flammability: certain grades offer UL94 VTM-0 flame rating classification and are halogen-free.
Full technical data can be supplied upon request,
or downloaded from our online portal.
What are Mylar Gaskets?
The Mylar material itself is a milky white coloured heat resistant polyester film, also recognised as BoPET (Biaxially-oriented polyethylene terephthalate), which is a flexible film which offers dielectric strength and moisture and chemical resistance (apart from alcohol) which will not become brittle under normal use. Mylar electrical insulation film is a durable and versatile material used in many general purpose applications, including those at high temperatures. As with other electrically insulating materials. Mylar Gaskets are used as spacers or gap fillers, taking the form of strips, pads, washers or intricate cut shaped pieces of material which are used for electrical insulation applications where they help restrict the flow of electric current by supporting electrical conductors - whilst preventing the current to pass through.
Why use Mylar Electrical Insulation Gaskets?
Gaskets made using electrical insulation materials like Mylar are to provide a barrier to restrict the flow of electrical current, protecting electrical conductors from coming into contact with people or tools during installation, repairs or when an electrical appliance or device is being used. Mylar films are ideal for use in an array of applications in the magnetic media, imaging and graphics, and packaging markets, however it is more often found utilised within electronic and electrical applications as insulation components.
Mylar gaskets offer good ageing properties, are strong and flexible with a high tensile strength, flexibility, durability as well as dimensional stability. Both the materials and components cut from Mylar raw materials also demonstrate low moisture absorption, good dielectric properties and high thermal resistance, withstanding a temperature range of -70°C to +150°C. Mylar electrical insulation can be supplied in full sized rolls, which depending on thickness (gauge) are available from 25 linear metres up to 200 metres long x 914mm wide and in thicknesses from 23 to 500 microns, all of which can be used to convert into finished gaskets and other products.
Benefits of Using Mylar Electrical Insulation
• Versatile and durable multipurpose PET plastic film
• Excellent resistance to water and most chemicals (not alcohol)
• Operating temperature range of -70°C to +150°C
• impact and tear resistant
• Electrically insulating
• Thickness of 23 to 500 microns
Types of Electrical Insulation Materials Available
Advanced Seals & Gaskets work with a multitude of material manufacturers, giving our customers more choice of gasketing materials - our most popular electrical insulation materials include:
Epoxy Glass - a green coloured material with good mechanical strength, good chemical, electrical and radiation resistance, low moisture absorption and a working temperature range of upto +120℃.
Kapton - is a polyamide film which offers a combination of mechanical and tear strength along with chemical, electrical and thermal properties that enables the gasket to withstand vibration and extreme temperatures in demanding environments.
Leatheroid - is a grey/blue coloured paper gasket material, also sometimes called Elephantide. This material is used within the electrical industry to insulate hot elements.
MICA - is a mineral based sheeting material which has excellent mechanical performances, is resistant to chemicals and provides electrical and therm insulation. MICA gaskets are often used to replace asbestos as they can withstand extremely high temperatures of up to 1000℃.
Nomex can be manufactured using nomex paper or nomex board, it can withstand high temperatures, has high mechanical and dielectric strength, and is an excellent insulation material for all kinds of electrical equipment and applications.
Presspahn is a brown coloured material, manufactured using kraft wood pulp. Presspahn sheets have excellent physical and mechanical properties, generally used as electrical insulation.
SRBF is resin bonded fibre material which is tough and rigid, with an operating temperature of 120℃, low water absorption and is resistant to wear, impact chemicals.
SRBP (synthetic resin bonded paper) is manufactured using layers of paper and synthetic resins. This material is suited to high and medium voltage application. SRBP has good mechanical and excellent electrical insulation properties, with low water absorption.
Valox is an excellent electrical insulation material which also offers flame retardant properties.
PTFE is a non- conductive plastic material used to produce electrical insulation sheets. PTFE sheets are suitable for high temperature applications and have a high melting temperature. This material has excellent dielectric properties and can be often found used in circuit boards.
PVC is a tough, lightweight abrasion, chemical and moisture resistant material which has good dielectric strength making it a great material to use for electrical insulation applications.
Advantages of Using Mylar Gaskets
Mylar is a popular multi purpose electrical insulation material which offers a number of excellent properties making it a suitable gasketing material choice for use in printing, packaging, sealing and electrical applications. Just some of Mylar gaskets extensive list of desirable features include its resistance to moisture and many chemicals, it has a broad operating temperature range of -70°C to +150°C, will seal against gases and is generally strong, flexible, durable and long lasting. Mylar materials are manufactured in a number of thicknesses from 23 to 500 microns, in roll sizes of between 25 and 200 metres and in different grades including a fairly new flame retardant variant from which cut gaskets can be converted.
Mylar electrical has a rough surface which helps with handling, conversion and to hold adhesives prior to gasket conversion. Rolls of Mylar can be supplied in can be converted into finished cut gaskets or supplied in full for customers or end users to be able to cut their own parts. Some popular uses for Mylar gaskets include cable insulations, heating elements, within solar panels, motors and aerospace.
Please contact us using the form below or by calling us on +44(0)1384 252555.