- Home
-
About Us
- Products
- Industry
-
News
-
Contact Us
Description
Description The support ring of the hydraulic cylinder seal is installed on the inside of the end cover of the hydraulic cylinder. * To support the piston rod; preventing the piston rod from vertical pressure to bring uneven sealing pressure caused by the rod seal and the poor sealing effect. Short life and other effects.* Second, the guide ring of the hydraulic cylinder seal ringThe back up ring of the hydraulic cylinder seal is installed on the piston, and its main function is to guide the piston to perform linear motion, to prevent the piston from deviating due to uneven force, causing internal leakage and reducing the life of the seal.* The service life of the back up ring and the support ring directly affects the use effect and life of the piston seal and the piston rod seal, so the requirements for the back up ring are also high, such as low friction coefficient, high hardness, long service life, etc. .* There are many forms of guide belts and support rings, and they are also used in combination with the main seal. Application None Materials None| Temperature | -40℃~120℃ |
| Pressure | None 50 MPa |
| Speed | 1.5 m/s |
| Medias | NY |
None
Polyurethane is a material that has the elastic properties of rubber. The proportion in its composition (diisocyanate, polyol, chain extender) is determined by its properties. This material is characterised by a strong mechanical resistance, good wear resistance, high elastic modulus, good flexibility and a very good ozone and oxidation resistance.
| Chemical resistance | Pure aliphatic hydrocarbons (propane, butane) Mineral oils and greases Silicone oils and greases Water up to +50°C |
|---|---|
| Compatibility issue | Ketones, esters, ethers, alcohols and glycols Hot water, steam, alkalis, amines and acids |
| Temperature range | -30°C/+90°C -30°C / +110°C with our PUHT (short term peak at 150°C) |
None
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 |