特点：
阀门中腔密封元件是一种端面密封，设计遵照法兰标准规范，以跑道型、圆形、菱形等多种形状。
根据温度压力等级，介质特性，采用特殊工艺制作而成，能有效解决各种情况下的阀门中腔密封。
无需考虑安装方向。
Characteristics:
The sealing element of the valve is a kind of end face seal, which is designed according to the flange standard specification, with the shape of runway, circle, diamond and so on. According to the temperature pressure grade, the dielectric characteristic is made by special process, which can effectively solve the sealing of valve in various situations.
技术参数：
耐温范围：-200~650℃（蒸汽中） ；-200~450℃（空气中）；PH值：0~14
Technical parameters:
Temperature tolerance range: - 200 ~ 650 ℃ (steam) - 200 ~ 450 ℃ (air)；PH: 0~14
应用范围：
广泛应用于多种介质环境，在石油化工、冶金、造纸、电力、水处理、机械制造等行业的阀门中腔密封。
Application:
It is widely used in various media environment, and it is sealed in the valves of petrochemical, metallurgy, papermaking, electric power, water treatment, machinery manufacturing and so on.
性能：
高压，防高压介质冲射爆裂，尺寸稳定性，制造﹑贮运﹑安装过程不变形，自身骨架承载强，能承受无限法兰预紧和设备自重不压馈。标准：HG/T 20611---2009 钢制管发兰用具有覆盖层的齿形组合垫（PN系列)；HG/T 20632---2009 钢制管发兰用具有覆盖层的齿形组合垫（GLSS系列)
Performance:
high pressure, anti - high - pressure media burst.Dimensional stability, manufacturing, storage and transportation, the installation process is not deformed.The self - skeleton bearing is strong, can withstａnd infinite flange pretension and the equipment self - weight.
