Baxi Broag Sealing Ring 5 Pack S100855

SKU W-418446

Manufacturer part number: S100855

£55.18

inc VAT£45.98 ex VAT

Lead time: 1-5 working days

Price BeaterSeen this item cheaper elsewhere? Let us know.

Questions about this part? Talk to our team

Phone: 01226 369637

Opening times

Monday to Friday 08:00 to 17:00
Saturday and Sunday: closed

Delivery

Free standard delivery on orders over £100 ex VAT. Orders below this carry a £7.95 inc VAT delivery charge. Express delivery items £19.95 inc VAT, allow 1 to 2 working days. Delivery details and surcharges

Need delivery on or before a specific day? Ask our team.

Description

Product Overview

The Baxi Broag S100855 Sealing Ring (PK5) is a genuine-style boiler sealing ring supplied as a handy pack of 5 for maintenance and repairs. Designed to help create a secure, leak-resistant seal within compatible boiler assemblies, it supports safe, efficient system operation. Ideal for keeping service stock on hand and reducing downtime during call-outs.

Key Features

Pack of 5 sealing rings – convenient for routine servicing, spares, and repeat repairs.
Helps prevent leaks – supports a tight seal to reduce weeps and pressure loss.
Boiler spare for maintenance work – suitable for planned servicing and emergency replacement tasks.
Easy to stock and carry – compact boiler spare that fits neatly in service kits and vans.

Use Case / Application

Suitable for use in heating and plumbing repair scenarios where a sealing ring is required as part of a boiler service or component replacement. Common applications include:

Domestic boiler servicing and preventative maintenance
Replacing worn seals during component change-outs
Reducing minor leaks during heating system repairs
Professional and DIY-friendly boiler spares stocking (where competent and safe to do so)

Problem → Solution

Ideal for replacing a tired or damaged boiler seal that can cause drips, weeping joints, or loss of system pressure, restoring a reliable seal quickly and cleanly.

Product Specifications

• Manufacturer – Baxi
• Manufacturer Part Number (MPN) – S100855
• Pack Contents / Includes – Sealing rings x 5 (PK5)
• Product Type – Boiler sealing ring / seal

Buy from BHL

Baxi is a well-known heating brand, and this Broag S100855 sealing ring pack provides a practical, service-ready solution for boiler maintenance and repairs. Buy online from BHL for competitive pricing and free* fast UK delivery, with orders delivered with care from UK warehouses. As a specialist online merchant trusted by thousands of satisfied customers since 1998, BHL is backed by thousands of 5 star reviews. Choose BHL today and order the Baxi Broag S100855 Sealing Ring PK5 with confidence. *see our terms

Reviews

Buying guide: Boiler Spares

Boiler spares are replacement parts for gas, LPG and oil boilers: printed circuit boards, fans, gas valves, pumps, diverter valves, heat exchangers, sensors, pressure gauges, burners, electrodes, seals, casing panels and flue parts. Most are made for one manufacturer, and often for a narrow range of models, so identifying the boiler correctly matters more than anything else.

Identify the boiler first

Find the data badge, usually behind the front panel or under the controls cover. It shows the manufacturer, the model and the GC (Gas Council) number, a seven-digit reference for the exact appliance. Natural gas and LPG versions of the same boiler usually have different GC numbers, and parts can change between production runs, so the GC number and serial number are the safest way to match a part. The boiler's installation and servicing manual lists the parts for each model.

Part numbers and replacements

Search by the manufacturer's part number where you have it. Manufacturers sometimes replace a part with a newer version under a new number; only use a replacement that the manufacturer lists for your model. Some repairs need a kit rather than a single part, for example a part supplied with new seals or fixings.

Safety

By law, work on gas boilers and their gas parts must be carried out by a Gas Safe registered engineer qualified for that type of appliance; ask to see their ID card before work starts. Oil boilers should be worked on by a suitably qualified technician.

For thermostats and programmers, see heating controls.

Shop all Boiler Spares