a9cc56f1____Group_15___2012___GICL_Wiki__3
[0] C-Ring [1] 1 [2] 1 [4] Steel [5] Strong and durable enough to seal and redistribute forces. [6] Cold winding. [7] Efficient way of mass production, helps to obtain the desired characteristics. [3] 
Acts as a static sealing element and helps to redistribute. It also helps to prevent tampering inside of the saw.
Gate 3 - Group 15 - 2012 - GICL Wiki