VMQ, Silicone O-Rings & Seals
Silicone O-rings are very resistant to high/low temperatures, oxygen, ozone, and UV light. In addition to being generally inert (non-reactive), silicones are odourless, tasteless, non- toxic, and fungus resistant. They also have great flexibility retention and low compression set.
It must be taken into account that in general silicone has poor mechanical performance. Silicone Seals are sensitive to shear forces, and therefore not suitable for dynamic or rotary closing applications.
Temperature range:-54 to 232 °C
Shore:30 / 40 / 50 / 60 / 70 / 80 / 90
Tradenames:KE® (Shin-Etsu Silicones), Silastic® (Dow Corning Corp.), Silplus® (Momentive Performance Materials Inc.), Tufel® (Momentive Performance Materials Inc.)
Common names:Silicone, VMQ, PVMQ
Colours:Red. Other colors on request.
Silicone performs well in
- Engine & transmission oils (mineral oils)
- Dry heat
Silicone does not perform well in
- Petroleum oils & fuels
- Ketones (MEK, acetone)
- Concentrated acids
Typical VMQ Applications
- High temperature air seals
- Aircraft, subways and building interiors
- Sound and vibration dampening in automotive