Brett Martin B5398 450mm Chamber Riser Seal (for use with B5397)
- Brett Martin B5398 Chamber Riser Seal for 450mm (17¾") diameter risers
- Provides a secure, watertight seal between inspection chamber and riser
- Combines a flexible rubber sealing face with a stiff backing for leak resistance and strength
- Factory fitted but removable for easy on-site replacement if required
- Meets Building Regulations Part H1, trusted by drainage and plumbing specialists
The Brett Martin B5398 450mm Chamber Riser Seal is designed for drainage professionals and civil engineers who need a reliable, watertight connection between inspection chambers and riser pipes. Its robust construction ensures long-lasting performance, making it an essential component for compliant underground drainage installations. Please note, this seal is designed specifically for use with Brett Martin inspection chambers and risers.
Application
Ideal for use with 450mm diameter chamber risers (B5397), this seal prevents water ingress and leaks in drainage systems. It is perfect for installers and maintenance teams requiring a durable, easy-to-fit solution that supports Building Regulations compliance and reduces the risk of costly repairs.
Dimension
- Diameter: 450mm (17¾") – compatible with Brett Martin B5397 risers
Material
- Flexible rubber sealing face for excellent leak resistance
- Stiff backing provides structural support and durability
Type
- Drainage chamber riser seal
Delivery
Important: The following delivery information applies only to orders placed online.
Delivery Times
When placing your order, you will be able to view available delivery times at the checkout.
Please note: while we aim to deliver within 2–3 business days, this is subject to stock availability. A member of our team will be in touch after you place your order to confirm your delivery date.
Click & Collect is also available from selected branches. However, please be aware that stock levels can fluctuate, so we’ll confirm product availability and collection timing once your order is placed.
Delivery Charges
Orders over £150 ex VAT within our local delivery area qualify for free delivery. This excludes palletised or specialist products.
For orders under £150 ex VAT, standard delivery is £10 plus VAT. Certain products have specific delivery costs:
- Civil Engineering products: £20 + VAT.
- Roofing Tiles under £249.99 ex VAT: £60 + VAT.
Delivery charges and policies may vary at the discretion of our branches, and we reserve the right to amend them as required.
We offer a variety of delivery options to meet your needs nationwide, including pallet shipping (subject to size and weight restrictions), site delivery, and same-day or next-day delivery via TradeKart (available in selected postcodes).
Delivery charges are calculated based on your location, the products ordered, and your selected delivery method. Final costs will be displayed at checkout. If you have specific delivery requirements, please contact your local branch via our Branch Finder.
For any delivery-related enquiries, please email our sales team at websales@lordsbm.co.uk.
