As compared with wave-toothed compound gasket and spiral wound gasket.

并且与波齿垫片和缠绕垫片的密封性能进行了比较。

Valves in these classes are also available with spiral wound gasket bonnet joints when specified.

如果用户要求,对于这些压力等级的阀门,我们也可以提供螺旋盘绕垫圈阀盖连接.