??1) rubber o-rings finished product planning generally are not allowed to appear flash, from the Angle of quality requirements necessary to fix. Except the flash need a lot of manpower and place, this virtually increases the procedure, extended production cycle. From a business perspective, rubber o-rings flash in addition to the cost of increased production.

??2) rubber o-rings flash, make rubber consumption increases, increases the production cost at the same time, it is a waste of capital, the environment is also a kind of potential pollution.

??3) flash composition change the size of the sealing die mould products, make the rubber o-rings finished product features affected (especially harsh on demand of all kinds of sealing products).

??4) in addition to the rubber o-rings flash, and especially in addition to the craft, and clear and serious influence the apparent quality of the finished product, reducing the finished goods of commercial value. As the saying goes: "goods to sell a piece of skin", that is the reason why speak. Remove the rubber o-rings flash, traces the different height of indeterminacy of dispute, the residual, directly affect the company image in the eyes of the customer, make the company lost its competitiveness in the market.