The types and characteristics of the sealing ring of the compression type pipe fittings, the manufacturers of the compression type pipe fittings will solve your doubts.
clamp type pipe fitting manufacturer believes that the basic principle of double clamp type stainless steel pipe fitting is to use the effective rigidity of metal materials and the elastic compression ratio principle of sealing material (rubber sealing ring), and at the same time make full use of the length of the socket, and the pipe method of crimping and connecting both sides of the U-shaped groove of the pipe fitting socket with clamp type is called double clamp type type. The rubber seal ring plays a vital role in the double clamp pressure stainless steel pipe fittings. According to the different fluid in the thin-walled stainless steel water pipe, the rubber sealing ring used in the double card pressure stainless steel pipe is also different.
clamp-on pipe fittings manufacturers believe that is commonly used in clamp-on pipe fittings. There are three types of rubber sealing rings:
1. nitrile rubber sealing ring
clamp-on pipe fittings manufacturers believe that nitrile rubber has the characteristics of excellent oil resistance, high wear resistance, good heat resistance and strong adhesion. Its disadvantages are poor low temperature resistance, poor ozone resistance, poor insulation performance, and slightly lower elasticity. The elongation of nitrile rubber can reach 300%, and the tensile strength is greater than 10 N/mm. Nitrile rubber has good resistance to mineral oil, vegetable oil, benzene, gasoline, ordinary dilute acid and alkali. However, the nitrile rubber lip seal cannot be used at a temperature higher than 80, because at this temperature, the stability of the nitrile rubber in the solvent will decrease. Therefore, if it is used for oil, nitrile rubber seals are generally used as seals.
two , silicone rubber seal ring.
card type pipe fittings manufacturers believe that silicone rubber sealing ring is generally used for steam, high temperature hot water, etc. The salient feature of silicone rubber is its high temperature stability. Although the strength of silicone rubber at room temperature is only half of that of natural rubber or some synthetic rubber, it can still maintain a certain degree of flexibility, resilience and surface hardness at high temperatures above 200, and there is no obvious change in mechanical properties. The silicone bond in the weather-resistant silicone rubber is very stable to oxygen, ozone and ultraviolet rays, does not contain any additives, and has excellent weather resistance. Physical properties. The physical and mechanical properties of silicone rubber at room temperature are worse than ordinary rubber, but at 150 and -50, its physical and mechanical properties are better than ordinary rubber. Physiologically inert. Silicone rubber is non-toxic, tasteless and odorless, does not adhere to human tissues, has an anticoagulant effect, and has little reactivity to human tissues.
three , EPDM rubber sealing ring.
clamping pipe fittings manufacturers believe that EPDM rubber sealing ring has excellent aging resistance and is also a common sealing ring type for double clamping pipe fittings. It has weather resistance, ozone resistance, sunlight resistance, heat resistance, water resistance, water vapor resistance, UV resistance and radiation resistance and other aging properties. At the same time, it is also excellent in chemical resistance, acid resistance, alkali resistance, detergent resistance, animal and vegetable oil resistance, alcohol resistance and ketone resistance. Excellent water resistance, superheated water resistance, water vapor resistance and polar oil resistance, applicable to a wide range of temperature, to low working temperature -40 ~-60, can be used in the 130 for a long time.