欧一美一色一伦一A片,91精品久久久久久久久久久久,成年人在线观看视频,粗大的内捧猛烈进出在线视频

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.

成人无码区免费A片在线软件 | 国内老熟妇对白XXXXHD | 午夜福利10000| 红桃视频成人A片免费 | 国产亚洲精品久久777777黑寡妇 | 欧一美一性一交一免一费一H一D | 亚洲精品电影中文字幕蜜桃视频 | AV无码在线播放 | 一级毛片试看120分钟 | 人妻无码精品一区二区 | 免费无码婬片AAAA片直播 | MM131美女麻豆传播媒体 | 国产裸体美女永久免费无遮挡 | 国产 高清秘 成人久久 | 国产美女裸体无遮挡免费视频网站 | 国产在线拍揄自揄拍无码视频 | 亚洲精品白浆高清久久久久久 | 日批视频无吗专区免 | 日韩一级成人电影 | 午夜精品A片一二三区蜜臀 国产理伦片一级A片我的课 | 国内一级一片内射免费视频观看 | 狠狠人妻久久久久久综合蜜桃 | 亚洲无码在线免费观看 | 污污内射久久一区二区欧美日韩 | 中文字幕免费在线观看 | A片做爰高潮过程免费观看网站 | 羞羞视频在线观看免费 | 一级A片60分钟免费看 | 91精品丝袜久久久久久无码人妻 | 蜜乳av中文字幕一区二区 | 韩国免费一级a一片在线播放 | 蜜臀久久99精品久久久久久酒店 | 国产乱婬AAAA片视频 | 精品国产乱码久久久久久蜜殿网站 | 嫩BBB槡BBBB槡BBB免费 | 少妇熟女a v精品一区二区 | 日日夜夜免费视频 | 红桃视频乱码一区二区三区 | 亚洲AV秘 无码秘 蜜桃 | 亚洲无码一区二区三区 | 看国产熟妇乱子伦 |