307 #  83.3mm easy open lid  
material : tinplate 
inside dia (mm) 83.3mm
countersink depth : 4.75+-0.15MM
outside dia (mm)  92.20+-0.20
curl height  2.00+-0.20mm 
plane depth 3.70+-0.15mm 
seaming compound weight : 66+-10mg
compressive strength (psi) >200
pop N 20-35 
tear N 60-95
Usage :  tinplate lid is suitable for different kinds of canned food ( such as tuna fish ,tomato sauce, meat, fruits
vegetables etc . dry goods , industrial lubricants, agricultural products ect