BS 668:1936

This Specification covers one grade of laminated synthetic resin bonded sheet from 1/2 inch to 4 inches in thickness having medium to high mechanical strength and wearing properties, good machining characteristics, low moisture and oil absorption, with consequent small tendency to swell, and with the added advantage of silence when meshing with metal gears. This grade is suitable for the production of high-class gears by the usual engineering methods having teeth 16 D.P. or larger.