Rubber is often used as an electrically insulating material and, correctly formulated, it can offer outstanding properties in this respect. However, electrical properties are dependent on the materials used in compounding and requirements should be clearly defined.
In general, an insulating material can be defined as having an electrical resistance greater than 100 megohms per cm3. Materials for applications requiring extremely good insulating properties are usually defined by electric strength, measured in Kilovolts (KV) per mm thickness of material. This is calculated by placing a sheet of the material between two electrodes and applying an increasing voltage until electrical breakdown occurs.
Good insulation is achieved by the use of non-black fillers, and compounds of any colour which are based on these fillers are suitable for insulation purposes.
For test methods and recommended resistance values for anti-static and conductive rubbers, please see BS 2050.
"ONGC - Oil and Natural Gas Corporation Limited" - Our complex drilling application where Shaft was eccentric and application was robust & muddy. Replacement was never easy. Mech Spares designed Oil seals resolved difficulty. This gave a complete joy to my maintenance team.
"Mr Mohammed Al Duaigy" of (Kuwait National Petroleum Company) : We tried several diaphragms from renown worldwide Rubber manufacturing companies. We found Mech Spares technical know how and product to be of great durability and lasted 3 times more then anticipated. They have accurate understanding of there products.
"McCafferty BM Design Ltd, KENT United Kingdom" - Most of the O rings manufacturing company suggested to use larger diameter and expensive elastomers. We learnt with Mech Spares that elastomer being weaker compare to metal and alloys and needs appropriate back up for high pressure or high vacuum applications. Further not necessary the most expensive elastomer is the best for all applications. We trust Mr Nilesh chodhari completely for all our O rings designing applications.
"Dr. A. Singh" of BARC: The electric Insulation mat manufactured by MECH SPARES as per IS 15624 tested at ERTL and found to withstand 40 Kv and still didn't tear. We have been using since 5 years and still didn't generate any fatigue. They arranged bulk delivery in short period.
"Tata Steel" - One of our old machines started making loud noise and disturbed the entire village. We were compelled to stop the machines which lead to huge production loss. With the help of Mech Spares designed bellows in two part we could retain the lubrication and eliminate the noise.
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