Seal design & function
Trelleborg 116 is designed as a sliding seal to which lubricant has been applied between the sliding skin and the body of the seal. The tip of the skin is folded over and glued to the body of the seal to ensure the lubricant stays in place.
This design permits installation with very low force, as there is no friction between rubber and concrete and make the system easy to center during jointing. During installation, the adhesive joint releases allowing the lubricated skin to slide over the body of the seal.
Joint performance is dependent on dimensional accuracy and surface finish of socket and spigot.
Trelleborg 116 Pre-Lube Manhole seal meets all relevant current European Standards.
Key features & benefits
- Easy to center during jointing
- Easy installation, no friction between the rubber & 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) | Joint GAP (mm) |
|---|---|---|
| 16 | 25.0 | 9.2±1.2 |
| 18 | 25.0 | 10.4±1.4 |
| 20 | 26.6 | 11.5±1.5 |
| 22 | 30.0 | 12.7±1.7 |
| 24 | 32.0 | 13.5±2.0 |
| 26 | 35.0 | 15.0±2.0 |
| 28 | 38.0 | 16.0±2.5 |
| 30 | 41.0 | 17.1±2.5 |
Dimensions & Designation
On each seal, profile, diameter and appropriate pipe dimensions together with date of manufacture is given. The corresponding information is also included 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 it at a few points. It is vital that the seal seats against the shoulder around the whole circumference of the manhole.
Centre the manhole sections and complete the joint.
Depending on the joint design it may be possible to joint one side of the manhole, followed by the other.
The position of the seal in an assembled mahole is shown in picture.
If re-joining is required ensure the sliding skin is drawn back to position as shown in the picture.