Grant Fibre Washer Set Mpcbs34 All Models

Sold as a pack 3 x small + 3 x medium + 1 x large

Genuine Replacement Washer Kit for Grant Oil Boilers and Heating Components

Maintain leak-free connections and extend the life of your Grant heating system with the Grant Fibre Washer Set – MPCBS34/A. These high-quality fibre washers are essential for creating watertight seals at key connection points in your boiler, pump, and valve assemblies. Designed specifically for use in Grant oil-fired boilers, this genuine washer set ensures proper fitting and long-lasting performance during maintenance or part replacement.

Ideal for heating engineers performing routine servicing or DIY customers undertaking small repairs, this washer kit is a must-have item for your spares box.

Key Features & Benefits

• Genuine Grant Washer Set – MPCBS34/A
  OEM washer kit manufactured to Grant’s specifications for perfect fit and material quality.

• Essential for Leak-Free Joints
  Provides a reliable seal on threaded and compression fittings, preventing water ingress or loss.

• Includes Multiple Sizes
  Supplied as a multi-washer set to suit various components in your Grant heating system.

• Heat & Pressure Resistant
  Made from durable fibre material capable of withstanding typical heating system pressures and temperatures.

• Ideal for Maintenance & Repairs
  A convenient, low-cost solution for servicing boilers, replacing pumps, or installing valves.

 Compatible Grant Boiler Models

The MPCBS34/A Fibre Washer Set is suitable for use in a wide range of Grant oil-fired boilers, including:

• Grant Vortex Pro Internal & External Boilers

• Grant Vortex Eco Utility and Wall-Hung Models

• Grant Vortex Blue Range

• Grant Euroflame and Combi Boilers

• Any Grant appliance using fibre-sealed joints for heating circuits, pumps, valves, or burner fittings

Not sure which washers you need? Contact our friendly team and we’ll help you match the correct set to your boiler model.

 When to Replace Fibre Washers

Fibre washers should be replaced:

• Every time a joint is disturbed (e.g., during pump or valve replacement)

• If you notice drips or leaks around fittings

• When washers are flattened, cracked, or deteriorated

• As part of annual boiler servicing to ensure reliable seals

Replacing fibre washers is a simple, effective step in preventing water damage and system inefficiencies.

 Technical Specifications

• Part Number: MPCBS34/A

• Manufacturer: Grant UK

• Material: High-density fibre

• Washer Sizes Included: Typically ½", ¾", and other common sizes used in Grant heating components

• Temperature Range: Up to 120°C

• Application: Sealing threaded or compression fittings in oil-fired boiler systems