Composite sealing strip for automobile

Automotive composite sealing strips Automotive sealing strips are one of the important parts of automobiles. They are widely used in door, window, body, sunroof, engine box and back-up (luggage) box. It has sound insulation, dustproof and water seepage prevention. And the function of shock absorption, maintain and maintain the small environment in the car, thus playing an important role in protecting the occupants, mechanical seals of the electromechanical equipment and accessories in the car. With the development of the automobile industry, the importance of the beautiful, environmentally friendly and comfortable functions of the sealing strip has emerged. The foreign automobile industry has carried out special research and development on the sealing system (called AUTO-BILE SEALING SYSTEM) installed in various parts of the automobile, and its importance is attracting people's attention. 1. According to the name of the seal installation location (component), the classification of mechanical seals includes: engine cover sealing strip (HOOD), which can be divided into front, side wall and rear; door frame sealing strip (DOOR SEAL); front, WINDOW SCREEN; SIDE WINDOWSEALING; SUNROOF SEALING; PRIMARY DOOR SEAL; GLASSRUN CHANNEL; interior and exterior machinery Shaft seal side strip (water cut) (WAISTLINE); trunk sealing strip (TRUNK SEAL); anti-noise sealing strip (ANTI-NOISE); dust proof strip (ANTI-DUST), etc. 2. According to the sealing characteristics, it can be divided into weather sealing strip (WEATHERSTRIP) and general sealing strip (SEALING). Among them, the weather sealing strip has a hollow sponge tube, which has a better function of maintaining temperature and humidity. Common weather sealing strips include door frame sealing strips, trunk sealing strips, and engine box cover strips. Commonly used general sealing strips include front and rear windshield sealing strips, corner window sealing strips, inner and outer side strips, etc. 3. According to the classification of the compound structure of the rubber material, it can be divided into pure rubber sealing strips-composed of a single type of rubber; two composite sealing strips-composed of dense rubber and foam sponge rubber, often containing metal in the axial direction inside the dense rubber Frame material; three-composite sealing strip-composed of two kinds of compact glue (one of which is light-colored) and sponge glue, usually containing a metal skeleton and reinforcing fibers inside the compact glue. Four composite sealing strips-Shanghai Shenya Sealing Parts Co., Ltd. took the lead in the domestic development and production of composite sealing strips composed of 4 kinds of rubber materials, and covered with a thin layer of protection on the surface of the foam rubber (bubble tube) Layer glue, thereby further improving the service life of the seal. 4. According to the classification of materials, it can be divided into rubber sealing strips; plastic sealing strips; thermoplastic elastomer sealing strips. 5. Classified according to the state of surface treatment, the surface of some sealing strips after additional treatment can be divided into flocking sealing strips; surface coating sealing strips; sealing strips with fabric stickers. 6. Classification of special functions. Some sealing strips have electronic intelligence functions, such as anti-pinch sealing strips. (2) Sealing material EPDM rubber EPDM is made by polymerizing ethylene and propylene monomers with a small amount of non-conjugated diene. The characteristic of its structure is that there are no unsaturated double bonds in the main chain of the polymer molecule, but unsaturated double bonds are introduced in the branch. Therefore, it has excellent weather resistance, heat resistance, ozone resistance, ultraviolet resistance, good processing performance and low compression set. It is the material of choice for the production of sealing strips. At present, most of the automotive sealing strip materials use EPDM as the main raw material. According to the different parts and functions of the sealing strip, in actual applications, vulcanization, protection, reinforcement, operating system materials and special imparting materials (such as colorants and foaming agents) are added to the EPDM material to form a dense glue (including black Glue and color glue) and sponge glue. Automotive sealing strips are mainly made of EPDM rubber foam with good elasticity and resistance to compression deformation, aging resistance, ozone, chemical effects, and a wide temperature range (-40℃~+120℃). It is made of dense composite, and contains unique metal clamps and tongue-shaped buckles, which is durable and easy to install. It has been supporting the major auto manufacturers for a long time. Product specification: Recommended applicable temperature range: PVC material -20 °F-150 °F (-29 °C-65.5 °C) EPDM material -40 °F-248 °F (-40 °C-120 °C) Internal metal fixture material: steel wire Or steel sheet keywords: mechanical seals, mechanical seals, mechanical shaft seals