Seal design & function
The Trelleborg 170 is the next generation of pre-lubricated seals for concrete manholes.
The unique design and specially formulated internal lubrication ensure that manhole sections are easily centered when jointing. No external lubrication is required, and jointing force is low.
The Trelleborg 170 is made from high quality EPDM rubber and manufactured to the highest standards of the industry.
Its unique design and installation-friendly features translate to reduced installation time and hence savings on labor.
Key features & benefits
- Hinged closure for resisting seal displacement
- Reduced assembly force
- Specially formulated internal lubrication
Stretch the seal onto the spigot and position against the shoulder.
Equalize the stress in the seal by lifting and releasing at a few points.
The seal must sit evenly against the spigot shoulder all around the manhole.
Lubrication of the socket or spigot is not required.
Centre the joint and assemble. The position of the seal in the final manhole joint is shown.
