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Description
Description None * The square ring does not twist* Low friction coefficient* Excellent extrusion resistance* Compatible with hydraulic oils Application AgricultureMobile machineryHydraulic cylinders Materials Friction ringPolyamide PA6O’Ring or square ringNBR 70| Temperature | -30°C/+100°C |
| Pressure | 40 MPa |
| Speed | 0.5 m/s |
| Medias | Mineral hydraulic oils Fire-resistant liquids Biocompatible fluids Water Others (contact our experts) |
Polyamide – PA6G
There are different types of polyamides, more commonly known as “nylons”. The most important are: PA 6, PA 66, PA 11 and PA 12. These types of nylons have different physical properties, mainly their composition and the structure of their molecular chains.
The PA6G polyamide is characterised by its stiffness, strong sliding abilities, excellent machinability and excellent resistance to wear and abrasion.
| Chemical resistance | None |
|---|---|
| Compatibility issue | None |
| Temperature range | -30°C / +120°C (very short term peak at 180°C) |
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 | -30°C/+100°C -40°C / +100°C with our low-temperature NBR |