1.NBR sealing ring
Suitable for oil and hydraulic oil, glycol hydraulic oil, the second ester lubricating oil, gasoline, water, silicone grease, silicone oil and other medium. Is currently the most useful, the lowest cost of rubber seals. Do not apply to the polarity of solvent, such as ketones, ozone, nitro hydrocarbon, MEK and chloroform. General use temperature range for - 40 ~ 120 ℃.
2.VITON sealing ring
High temperature resistance is better than that of silicone rubber, have excellent weather resistance, ozone resistance and chemical resistance, cold resistance is poor. For most of the oil and solvent have resistance, especially the acids, aliphatic hydrocarbons, aromatic hydrocarbons, and animal and plant oil. Suitable for diesel engine, fuel system and chemical plant of sealing requirements. Is not recommended to ketones, esters of low molecular weight and contain a mixture of nitrate. General use temperature range is - 20 ~ 250 ℃.

3.EPDM sealing ring
Has the very good weather resistance, ozone resistance, water resistance and chemical resistance. Can be used for alcohols and ketones, can also be used for the seal of high temperature steam environment. General use temperature range - 55 ~ 150 ℃.
4.NR rubber sealing ring
Rubber products have very good abrasion resistance, flexibility, breaking strength and elongation. But easy ageing, the air is heated becomes sticky, easy expansion and dissolved in mineral oil or gasoline, and alkali resistant, but not resistant to strong acid. Suitable for the automobile brake fluid, such as ethanol with hydroxyl ions in the liquid used. General use temperature range is - 20 ~ 100 ℃.