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O-Ring | Material | Hardness | Temperature |
VMQ | 20 – 80 SH A | -60 to +160/+180 ºC |
VMQ O-Rings provide an excellent resistance to aging, oxygen, ozone, UV rays as well as a wide temperature range including a high flexibility into cold environment. VMQ is also a good electrical insulator and is highly gas permeable.
Because of their low mechanical properties, VMQ O-Rings are mainly used in static applications. In other words, their low tear resistance and high friction coefficient make them difficult to use in dynamic sealing applications.
VMQ-made O-Rings (Silicone rubber / Polysiloxane of Vynile-Methyle) are usually red-colored.
VMQ O-rings have a good resistance to:
On the other hand, VMQ is not compliant with:
The term silicone includes a large number of materials including VMQ (Vynil-Methyl-Silicone). Silicone elastomers have many remarkable properties among which a good resistance to heat and a high flexibility into cold environment. The also have a good resistance to ozone and ageing as well as excellent insulation properties.