Mechanically sealed octagonal pads and oval pads-

Mechanically sealed octagonal pads and oval pads

　2017-06-23　　

Octagonal pad and oval pad for mechanical seal:

The octagonal gasket and oval gasket (commonly known as 'earth steel ring' in the oil refining industry) for trapezoidal groove flanges have good sealing performance. On the tapered surface of the groove tip, the 124 mechanical seal octagonal pad is in surface contact and the oval pad is in line contact. Therefore, the elliptical pad has a good fit under low tightening force, but it needs to be tightened twice; and the octagonal pad is generally less likely to leak after being tightened once. Their disadvantage is that they require greater bolt tightening force. When used in low pressure and high temperature conditions, the flange grade must be above grade.　　498.html,

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