An octagonal pad that’s so hard and completely inflexible – how can it be used as a gasket?
Thread Content
Octagonal pads, oval pads, and lens pads are all so hard and completely inflexible – how can they be used as gaskets?
The key is to ensure a perfect fit; the most important thing when installing the octagonal gasket is to clean the sealant thoroughly.
It just needs to be softer than a flange. The materials are generally 8#, 10#, 0Cr13, 304, 316l, etc
The flange is made of stainless steel, and the octagonal gasket is also made of stainless steel, using the same material
To be honest, in some applications it’s not necessary to use metal gaskets; they impose high requirements on the flanges as well as on the bolts. The cost is also high. Using gasketing would result in a lower relative cost.
The hardness of the gasket material should be lower than that of the flange material; this is especially true for the pipe ends of equipment. If the precision of flange fabrication is inconsistent, leaks can easily occur.
Metal ring gaskets are generally sealed using wire, and they require high precision in manufacturing as well as high surface smoothness; however, their sealing performance is excellent, especially under high temperature and pressure conditions
I also came into contact with an octagonal gasket once; it felt similar to a flange and was quite thick
Octagonal gasket, suitable for high-temperature and high-pressure conditions! You say the sealing effect isn’t good? RTJ tank trucks are difficult to use and expensive as well. Octagonal gaskets with precisely manufactured dimensions and tight fit provide a better sealing effect than wound gaskets! High pressure is preferred for use!