The role of octagonal gasket in pipeline sealing is to overcome the problem of high temperature and high pressure sealing. It is a special shaped metal ring gasket – an octagonal metal ring forged from stainless steel/alloy steel.
How to avoid pitfalls when operating an octagonal gasket? Here is a guide to avoiding pitfalls for you!
1. Incorrect flange groove
Installed on a flat flange → Leakage explosion (requires flange with trapezoidal groove)
The flange groove angle is 59 °± 0.5 ° (a difference of 1 ° will result in air leakage).
2. The installation method
Hard hitting with a hammer → metal corner cracking → high-pressure gas splashing.
Apply molybdenum disulfide lubricant and tighten the bolts diagonally (evenly apply force like changing a tire).
3. Identification of inferior gaskets
Authentic product: Metal ring milling processing (uniform surface knife marks).
√ Fake goods: Stamping burrs and cutting hands (can crack when pressed).
The mnemonic for using octagonal gaskets: The groove shape should be aligned, installation techniques should be used, and poor quality can be fatal!