Since 2006, Focus on rubber seals

The principle of seal production

by:ORK      2022-11-16
The hydraulic oil of photovoltaic equipment is used as the working medium in the hydraulic transmission system, which plays the role of energy transmission, conversion and control. The seals in the hydraulic system play the role of preventing fluid leakage from the joint surface, maintaining pressure, and maintaining energy transmission or conversion. At present, most of the sealing materials used at home and abroad are polymer elastomers, and plastics and various metals are also used under some special conditions. But no matter which material it belongs to, it should have the following properties: 1. It has certain mechanical and physical properties: such as tensile strength, constant elongation strength, and elongation 2. It has certain elasticity, suitable hardness, and small compression set 3. Compatible with the working medium, it is not easy to swell, decompose, and harden. 4. Wear-resistant, with a certain tear resistance. 5. It has high temperature and low temperature aging performance. However, no sealing material includes all the above-mentioned properties. It is necessary to select the appropriate sealing material according to the working environment, such as temperature, pressure, medium and movement mode, and to meet certain requirements by formulating the matching formula of materials. Or use two or more materials in the form of composite or combined structure to exert their respective strengths to achieve a more comprehensive effect. Formation of sealing effect: dynamic sealing is divided into non-contact sealing and contact sealing. Non-contact seals are mainly various mechanical seals, such as: graphite packing rings, floating ring seals, etc.; Block leakage channels to obtain sealing effect. The seals used in hydraulic systems are mostly static seals (face seals), reciprocating dynamic seals (piston, piston rod seals) and rotary seals. Factors affecting the sealing effect: the selection of sealing structure and the compatibility of oil film formation, pressure, temperature, and materials, the material, hardness, geometry, surface finish of the working surface contacted by the dynamic seal, etc. Product to the extreme. 1. Compatibility of sealing material and hydraulic oil (liquid): One of the sources of particle pollution of hydraulic oil is the incompatibility of sealing material and hydraulic oil.“crumbs”or“Wear debris”. seal due to“swelling”caused by damage“crumbs”or be“extraction”The unbonded inorganic substances and filling and reinforcing materials that come out will damage and fail the seals, and at the same time contaminate the oil, causing the hydraulic oil to deteriorate and fail. Seals, photovoltaic equipment, such products are now widely used in enterprises. Company website:
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