Diaphragms

With bore for 2nd stage Regulator of Boyle's table : 2 ply, 5 oz, canvas, topping with Neoprene rubber. Hardness : 80° ± 5°, Pressure : 300 lb/in², Bore : 0.297", Dimension : 20187" - 0.015", Thickness : 0.062" + 0.008"

For MOX regulator : 3 ply canvas topping with Neoprene rubber. Hardness : 85° ± 5°, Withstanding pressure : 225 lb/in², Outside Dimension : 3.250" + 0.010", Inside Dimension : 7/16", Thickness : 5/64"