These sealing rings should be used to create a seal between the top of the shaft of an inspection or catchpit chamber and the rim of a 350mm restriction cap.
Polydrain Inspection Chamber Base 4 Side Inlets - 450mm Diameter
Chamber Sealing Ring - 300mm
Chamber Sealing Ring - 750mm
Inspection Chamber Access Shaft - 450mm Diameter x 1000mm Depth
Inspection Chamber Set - 600mm Diameter x 896mm Depth with 150mm Channel andamp; 150mm Inlets
Inspection Chamber Circular Reducing Ring - 450mm Diameter
