Worcester Bosch Grommet 87379026380

The GROMMET, manufactured by Worcester Bosch under part number 87379026380, is a sealing component used on Greenstar 2000 Combi and Greenstar combi boiler appliances. It fits at pipe, cable or flue entry points through the casing or internal panels, closing the gap around the penetration. Its role is to protect the opening against water ingress, draughts and abrasion where services pass through the boiler's metalwork.

• The grommet is split, cracked or visibly perished
• The grommet has hardened and no longer grips the pipe or cable it surrounds
• The grommet is missing from its entry point, leaving an open hole in the casing
• Water marks, staining or corrosion around the penetration suggest the seal is no longer effective
• The grommet has worked loose and rattles against the casing or panel

• Confirm the appliance model and GC number against the fit list above
• Check the position and diameter of the entry point the grommet serves, as more than one grommet size may be used on the same appliance
• Inspect the surrounding casing for damage before fitting, as a distorted opening will not seal correctly
• Verify the part number 87379026380 against the number marked on the existing component or in the appliance literature