Essential Washers with Driving Band
1 x Driving Band for SR1a and TE1a 
1 x Fibre Washer for the Water Level Plug (3/16" Internal Dia) 
1 x Fibre Washer for the Safety Valve (Between the Safety Valve and Boiler, 1/4" Internal Dia) 
1 x Fibre Washer for the Whistle (Between the Whistle and Boiler, 1/4" Internal Dia) 
1 x Nitrile Washer for the top of the Safety Valve (3mm Internal, 6mm External, 1.5mm Thick) 
1 x Nitrile Washer for the bottom of the whistle.