COMBI
Description
The Simmerring Combi Seal consists of at least two mounted elements which are preferably used in agricultural and construction machinery. In addition the PU element in this system can provide effective sealing for small axial motions.
* Long service life
* High resistance to dirt ingress due to the optimal positioning of sealing lip and dust lip
Application
Drives (agricultural vehicles, general industry)
Agricultural machinery
Materials
Nitrile Rubber (NBR)
TECHNICAL DATA
TECHNICAL DATA
| Temperature | ≤ +80°C |
| Pressure | ≤ 0.05 MPa |
| Speed | ≤ 4 m/s |
| Medias | Mineral hydraulic oils |
MATERIALS
MATERIALS
NBR
Nitrile rubber (NBR) is the general term for acrylonitrile-butadiene copolymer. The ACN content can vary between 18% and 50%. While the acrylonitrile content is important, the resistance to oil and fuel is more so. Conversely, the elasticity and compression set are not as good. The NBR has good mechanical properties and good wear resistance. However, its resistance to atmospheric agents and the ozone is relatively low.
| Chemical resistance | Aliphatic hydrocarbons (propane, butane, petroleum, diesel fuel) Mineral oils and greases Fire-resistant fluids (HFA, HFB and HFC) Diluted acids, low-temperature alkaline and saline solutions Water (up to +100°C max) |
|---|---|
| Compatibility issue | Fuels with high aromatic content Aromatic hydrocarbons (benzene) Chlorinated hydrocarbons (trichlorethylene) Polar solvents (ketone, acetone, acetic acid, ethylene-ester) Strong acids Glycol-based brake fluids Atmospheric and ozone agents |
| Temperature range | -25°C/+100°C |