国产一区二区三区不卡在线观看,又粗又大内射免费视频小说,亚洲自拍偷拍精品第二页,亚洲不卡av不卡一区二区,日本毛片高清免费视频在线观看,性A∨精品高清在线观看

News center

The current position | home page > News and information > Common problems

How to choose gasket

Since there are many types of gaskets and we can recommend the corresponding gasket models for different parts of different industrial and mining occasions, such as automobile gaskets (please inform the cylinder gasket?Transmission pad?Water pump pad?Vent gasket?Such as OEM matching or after-sale maintenance market repair use, please try to provide a variety of parameters in order to choose the quality and affordable products you need.

Selection of the gasket
Any type of gasket must have the following eight important characteristics to ensure effective sealing for a long time in harsh service environment:

Air tightness 
For the media of the sealing system, the gasket does not leak at the recommended temperature and pressure for a certain period of time.

compressibility 
The gasket and flange contact surface should be well matched after the connection bolts are tightened to ensure the sealing.

Creep resistance 
Under the influence of pressure load and service temperature, the creep resistance of the gasket should be better, otherwise, the bolt torque loss will be caused, resulting in the decrease of the surface stress of the gasket, and the leakage of the hard gas system.

Chemical resistance 
The chosen gasket should not be subject to chemical medium corrosion, and can not be polluted by the medium.

resilience 
Even under the stable condition of the system, the two connected flanges will certainly have a small displacement due to the influence of temperature and pressure, the elastic function of the gasket should be able to make up for this displacement to ensure the sealing of the system.

The uf resistance 
The gasket shall be easily removed from the flange after use and shall not be glued

No corrosive 
The gasket shall be non-corrosive to the surface of the connecting flange.

Resistance to temperature 

The selected gaskets shall be used normally at the lowest and highest temperatures of the system.

国产一区二区三区不卡在线观看,又粗又大内射免费视频小说,亚洲自拍偷拍精品第二页,亚洲不卡av不卡一区二区,日本毛片高清免费视频在线观看,性A∨精品高清在线观看 国产md视频一区二区三区| 亚洲精品中文字幕久久| 亚洲av成人无网码天堂| 免费人成无码大片在线观看| 在线观看国产欧美| 国产乱子伦精品免费高清| 香蕉久久99综合一区二区三区| 中文字幕久久综合久久| 亚州娇小wⅰte黑人粗大| 亚洲熟妇无码aV在线观看网址| 亚洲婷婷开心色四房播播| 亚洲一级毛片日韩高清| 亚洲中文日韩欧美综合版| 中文字幕免费观看av| 亚洲欧美色一区二区三区| 国产猛烈高潮大叫视频九色| 亚洲日韩精品少妇熟女图片| 国产精品青青在线一区| 中文字幕亚洲综合久久蜜桃| 91在线播放国产日本欧美| 永久免费观看的毛片| 亚洲日本va中文字幕| 午夜福利在线观看视频| 97人妻精品一区二区三区| 国产精品综合一区二区在线观看| 亚欧A级毛片一区二区| 永久在线观看免费视频| 中文字幕视频一区二区三区| 国产麻豆精品免费视频| 一级特黄视频免费播放| 亚洲有码在线观看| 无码免费视频一区二区三区| 亚洲无码人成电影在线观看| 内射中出日韩无国产剧情| 国产97人人超碰caoprom| 久久久久亚州aⅤ无码专区首| 精品国产一区二区三区a| 亚洲αV日韩αV无码污污网站| 在线播放麻豆嫩草影院AV| 中文字幕亚洲综合中文字幕| 欧美一级做a爱高清免费观看| http://cdhbx.com http://patawang.com http://992167.com http://syxtbuick.com http://laibamm.com http://regooec.com