Flange sealing surface according to the working condition, medium, pressure, specifications, temperature and other conditions, so the type of choice is not the same. Below we come together to recognize the type of these flange sealing surface!
FF- full face sealing surface
Flat Face Full Face type sealing surface is fully Flat, suitable for occasions with low pressure and non-toxic media.
Rf-face sealing surface
The Raised Face type is the most widely and commonly used one of several types. The international standard, the European system and the domestic standard are fixed height, but the height of high pressure may increase the height of the sealing surface in the American standard flange.
The gasket suitable for the face sealing flange has various non-metallic plain gaskets, covering gaskets; Metal packing; Wound gasket (including outer ring or inner ring), etc.
M/FM- convex and concave sealing surface
The two types of Male Face and Female Face are a pair, one Female and one Male. They must be used together, which is convenient for alignment when loading and can prevent gasket from being extruded. Suitable for high pressure situations.
The suitable sealing gaskets for the sealing surface of concave and convex surface are: various non-metallic flat gaskets and covering gaskets; Metal packing; Basic model or with inner loop winding lead film, etc.