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VMQ O-Rings

VMQ O-Rings, resistant to hot air, ozone and UV rays

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 availability

O-RingMaterialHardness [SH A]Temperature [ºC]Check stock availability
Junta tórica VMQVMQ20 – 80-60 to +160/+180

Properties and advantages

VMQ O-rings have a good resistance to:
  1. Engine oil and transmission oil
  2. Animal and vegetable oils and greases
  3. Brake fluid
  4. Hydraulic fluid resistant to fire
  5. Chlorinated aromatic hydrocarbons of high molecular weight (including flame retardant insulators and transformer refrigerant)
  6. Diluted saline solutions
  7. Ozone, ageing and weather
  8. And they provide a moderate resistance to water as well
On the other hand, VMQ is not compliant with:
  1. Silicone oils and greases
  2. Aromatic mineral oils
  3. Hot water and steam that overpasses 121 °C
  4. Acids and alcalyse
  5. Chlorinated hydrocarbons of low molecular weight (such as trichloroethylene)
  6. Fuelsbased on hydrocarbons
  7. Aromatic hydrocarbons (benzene, toluene)

About VMQ

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.

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VMQ O-RINGS in stock