Worcester Bosch Fibre Washer 38x28x2mm 87161080340

This fibre washer is a sealing component manufactured by Worcester Bosch. It is designed for use in the Greenstar Danesmoor and Greenstar Utility range of heating appliances. The washer creates a watertight seal at joints and connections, preventing leaks in the heating system. Fibre washers are commonly used in heating and plumbing systems to seal threaded connections and flat faces. Over time, heat and pressure can cause the material to degrade, leading to leaks. This Worcester Bosch washer is a direct replacement for the original part. The washer is made from fibre, a material that provides a reliable seal under compression. It is a consumable item and should be replaced whenever a joint is disturbed.

• Visible water leaks or weeping at the joint where the washer is fitted
• The washer appears compressed, hardened, or cracked
• Water staining or mineral deposits around the connection
• Persistent drips that worsen when the system is under pressure
• The washer feels brittle or breaks apart when handled

• Confirm your appliance model and serial number against the compatibility list
• Check the part number 87161080340 matches your existing washer
• Inspect other seals and washers in the same assembly for wear
• Ensure the system is depressurised and drained before replacement
• If you are unsure, consult a qualified heating engineer