Description
The 320mm manhole riser sealing ring is used with compatible Kayflow 320mm inspection chamber components. It helps seal the joint between the chamber base and riser, or between compatible riser sections, as part of a 110mm underground drainage chamber system.
This Kayflow UG108 riser seal is part of the 320mm inspection chamber range. It is designed for use with the 320mm chamber system, including the matching 320 riser and 320 chamber base.
A correctly fitted sealing ring helps support a secure chamber assembly. It is useful for domestic drainage, extensions, garden drainage, outbuildings, repairs and light-duty site drainage work.
320mm Manhole Riser Sealing Ring for Drainage
The 320mm manhole riser sealing ring helps create a sealed joint within a compatible 320mm inspection chamber setup. It is used where riser sections are fitted to build the chamber height.
Kayflow lists UG108 as the riser seal for the 320 base. The same 320 chamber range includes the UG1002 riser and UG1004 chamber base.
- 320mm manhole riser sealing ring
- Kayflow product reference UG108
- Designed for the Kayflow 320mm inspection chamber system
- Used with compatible 320mm chamber risers and bases
- Helps seal riser-to-base and riser-to-riser joints
- Suitable for 110mm underground drainage chamber systems
- Useful for inspection, rodding and maintenance access chambers
- Part of the Kayflow 320 inspection chamber range
320mm Manhole Riser Sealing Ring Connection
This 320mm manhole riser sealing ring is fitted as part of the chamber build-up. It should be installed with compatible Kayflow 320mm chamber components only.
Before fitting, check that the chamber base, riser and sealing ring are clean and correctly aligned. Also, make sure the seal is seated properly before the chamber is backfilled.
Use suitable jointing lubricant or sealant where required by the manufacturer guidance and site specification. Do not force components together if the seal is twisted or trapped.
320mm Manhole Riser Sealing Ring Installation Use
The 320mm manhole riser sealing ring should be installed as part of a properly supported inspection chamber system. Correct bedding, backfill and chamber support help keep the chamber stable after installation.
The seal helps maintain the joint between compatible chamber sections. However, the chamber still needs to be installed square, level and in line with the correct drainage layout.
Kayflow states that 320 inspection chambers can be installed to a maximum depth of 600mm, and all outlets are 110mm. Always confirm the final chamber depth and cover loading before installation.
Seal for 320mm Inspection Chamber Risers
This sealing ring is useful for builders, groundworkers, landscapers and drainage installers working with 320mm underground inspection chambers.
It can be used when adding or replacing compatible riser sections on smaller drainage layouts. It is also a useful spare part to keep available when installing chamber bases, risers and covers on site.
This product is a sealing ring only. It should be used with compatible chamber components and is not a chamber base, riser or cover on its own.
Compatible 320mm Manhole Chamber Products
This 320mm manhole riser sealing ring is part of the wider TWS 320mm manhole chamber range. It can be matched with compatible 320mm chamber bases, risers, covers, frames and adaptors.
View 320mm manhole chambers at TWS.
View 110mm manhole inspection chambers at TWS.
View all manhole bases and inspection chambers at TWS.
Shop all underground drainage at TWS.
For official manufacturer information, see the Kayflow 320 inspection chambers information.







