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These technical plates are manufactured in several forms to fit different sealing needs:
The standard defines two main categories based on their resistance properties: tehplastina um gost 12855 77
Universal oil-, heat-, and frost-resistant. It is the most versatile type, typically used in contact with transformer oils. These technical plates are manufactured in several forms
Ozone- and frost-resistant. This type is optimized for outdoor environments where exposure to ozone and low temperatures is a factor. Technical Specifications Type UM (Universal) Type OM (Ozone-Resistant) Operating Temperature -60°C to +100°C -55°C to +50°C (standard) Hardness (Shore A) 55–70 units 70–80 units Tensile Strength min. 6.4 MPa min. 7.8 MPa Service Life Formats and Sizes This type is optimized for outdoor environments where
is the standard for rubber sheets used specifically in transformers and other electrical equipment . These sheets, often called "transformer plates," are designed to create fixed seals that withstand aggressive environments like transformer oil and extreme temperatures.
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