Trelleborg 154 is a pre-lubricated sliding seal that is stretched onto the spigot of the manhole. Additional lubricant is not required for joint assembly. Lubricant has been applied between the sliding skin and the body of the seal.
The special design of the joint and seal make the system easy to center during jointing, permits installation with very low force, as there is no friction between rubber and concrete and is standard in many countries.
Joint performance is dependent on dimensional accuracy and surface finish of socket and spigot.
Trelleborg 154 Pre-Lube Easy Center seal meets all relevant current European standards.
Key features & benefits
- Easy to center during jointing
- Easy installation, no friction between rubber and concrete
- No lubrication under suspended loads
Material
- Synthetic rubber SBR or EPDM - Hardness 40+/-5 IRHD
- Approved in accordance with EN 681-1
- Protected against ozone, oil resistant grades are available on request
Sizing Chart
| A (mm) | B (mm) |
|---|---|
| 19 | 29.3 |
| 27 | 41.5 |
| 32 | 49.2 |
Dimensions & Designation
On each seal, profile thickness, outer diameter recommended pipe measurement and production period are given. The corresponding data are also on the packaging.
Subject to change for technical reasons.
Joint Assembly
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.
Center the joint and assemble. The position of the seal in the final manhole joint is shown in the figure.
If re-joining is required ensure the sliding skin is drawn back to the position as shown in Figure 1.
