Hongfan Cement Pipe Quick Tips: How to Install the Coupling Gasket

Preparation Before Installing the O-Ring
Select the appropriate O-ring based on pipe diameter and apply a uniform layer of lubricant, such as Vaseline, to the end of the concrete pipe.

Gasket Installation Diagram

01 First, differentiate the textured side of the O-ring

Here's the key to the construction: The gasket must be flipped!
02
Reverse the textured side of the gasket downward, close to the pipe opening.
03
After placing the textured side of the grommet tightly against the tube opening, gradually flatten it out to the sides.
04 Until the entire gasket is installed around the pipe end.