
Seal design & function
Trelleborg 171 is a sliding seal with a pre-lubricated closed sliding mantle resulting in low jointing force as there is no friction between rubber and concrete.
Connected to the seal is a load distributor element which prevents concrete to concrete contact between the manhole sections.
Joint performance is dependent on dimensional accuracy and surface finish of socket and spigot.
Trelleborg 171 Pre-Lube Load distributor design complies with the requirements of DIN V 4034-1. The joint design complies with the requirements of DIN V 4034-1 and meets the requirements of all current relevant European standards.
A (mm) | B (mm) | Joint Gap (mm) |
21.0 | 72.7 | 11.5±1.5 |
24.4 | 78.0 | 13.5±2.0 |
29.1 | 87.6 | 16.0±2.5 |