Worcester Bosch Gas Pipe Seal 87186866130

The Worcester Bosch 87186866130 is a gas pipe seal used on the gas carrying pipework within the appliance. It is a Worcester Bosch factory part, listed under the gaskets, seals and o-rings category, and it forms part of the gas path sealing arrangement on the boiler.

Seals of this type sit at a pipe joint or connection point and are compressed when the joint is made up, closing the gap between mating surfaces so that gas cannot escape. Because it sits on the gas circuit, correct seating and correct tightening are essential.

The part is used across the Worcester Bosch Greenstar Compact and i Series families, including LPG and natural gas variants.

• A detectable gas smell at the pipe joint or around the appliance casing
• A failed tightness test or a drop on a let-by or pressure test at the gas pipework
• Visible flattening, cracking, hardening or deformation of the seal once the joint is opened
• Discolouration or staining at the joint face suggesting a long-standing weep
• The seal is disturbed or discarded during servicing and cannot be reused

• Check the GC number and appliance serial plate to confirm the boiler model before ordering.
• Confirm the part number 87186866130 matches the seal currently fitted, as similar seals are used elsewhere on the gas train.
• This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.