O-ring design knowledge

The relationship between the hardness of the O -ring and the maximum clearance and working pressure of the groove Sealing gap size and pressure rating, rubber hardness and the diameter of the O -shaped rubber seal cross-section, see the following table: Depth of groove in piston rod seal The de

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Domestic tires cannot develop at these three points

The development of local tire companies in China is becoming more and more difficult. The bankruptcy, bankruptcy, and mergers of companies are happening every year. Domestic tires are keen to fight price wars, but they have never invested their energy in scientific research. To truly narrow t

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The world's first graphene air purification product

Recently, Beijing Carbon Century Technology Co., Ltd. released the world's first graphene air purifier, which has a formaldehyde adsorption rate of over 97% within 2 hours. It is understood that formaldehyde is extremely harmful to the human body, especially for children. At present, many meth

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How to protect the car in the winter?

Introduction: When it's so cold in winter, cars need to be carefully maintained. Because the temperature is low, parts of the car are more vulnerable. How can we protect our car? Let's take a look. Winter car, careful is the key, like people like winter to keep warm, the car needs

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The role of pneumatic check valve and material introduction

Pneumatic check valve role: The main function of the pneumatic check valve is to prevent backflow of the medium in the pipe. Bottom valve and duckbill valve is also part of the check valve system. Check valve can be divided into lift, swing Kai, butterfly three. Lifting and can be divided into ve

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