Choice of Wiring Harness Single Wire Seals

According to relevant statistics, most of the reasons for the deterioration of seal performance are caused by aging and damage of seal performance. Therefore, in addition to ensuring the production process of the seal, its production materials are also very important. Therefore, only by properly selecting the silicone seal material can the long service life of the seal and the stability of the sealed articles be guaranteed.

Automotive connector single wire seals should have the following conditions: high mechanical strength, pressure resistance, and pressure deformation resistance; wear resistance, high compliance, good self-lubricating properties; no excessive Wear and corrosion; good abrasion resistance and long life; good thermal conductivity and heat dissipation; good high-temperature resistance; good thermal crack resistance (high thermal shock coefficient); small coefficient of linear expansion, thermal deformation resistance, good dimensional stability Good air tightness, low density, and good molding performance.

Automotive Connector Single Wire Seal

Features of Polyurethane Silicone, Silicone Silicone, Fluorosilicone Seals

1. Polyurethane silicone seal

Polyurethane silicone seals have the excellent abrasion resistance and good airtightness, and the operating temperature range is generally -30 ~ 80 ° C. In addition, it has medium oil resistance, oxygen resistance and ozone aging resistance, but it is not resistant to acids, alkalis, water, steam, and ketones.

2. Silicone rubber single wire seal

It has outstanding high and low-temperature resistance, ozone resistance, and weather resistance. It can maintain its unique use elasticity, ozone resistance and weather resistance in the operating temperature range of -50 to 280 ° C. It is suitable for the production of thermal mechanisms. Seals. However, the price of silicone seals is more expensive.

3.Fluorine silicone seal

Fluorosilicone seals are the comprehensive performance seals in all synthetic silicone seals. Among silicone materials, fluorosilicone has outstanding heat resistance (200 ~ 250 ° C), oil resistance and chemical resistance. Therefore, fluorosilicone can be used in high-temperature environments or special workpieces that cannot be used with nitrile silica gel and polyurethane silicone seals The seal serves as a sealing material.

Performance characteristics of various silicone seals

1. Silicone seals: good weather resistance, ozone resistance, chemical resistance, etc. It is suitable for sanitary equipment and automotive radiators and automotive brake systems. It is not recommended to be used in videos or exposed mineral oil. Generally, suitable temperature is -55 ~ 150 ℃.

2. Silicone Seal: It has good heat resistance, cold resistance, atmospheric aging resistance, and excellent insulation properties. This kind of seal has poor tensile strength and oil resistance, so it can be generally used in microwave ovens, electric water heaters and other equipment, or some kettles, water dispensers, etc. It is not recommended to use it in oil products, concentrated solvents in.

3. Nitrile silicone seal: This seal is the most widely used, and the cost is relatively low. Suitable for petroleum hydraulic oil, glycol hydraulic oil, diester lubricant, gasoline, water, silicone grease, silicone oil and other media. Not suitable for polar solvents such as ketones, ozone, nitro hydrocarbons, MEK. The gaps in the notches of the glass frame are not uniform, so it will cause poor contact between the glass silicone seals and the glass and glass notches, so that they will fall off when pushed by hand. The general use temperature range is -40 ~ 120 ℃.