These manufacturing methods produce {HEAD ~ pistons} having a significantly lower cost per unit than pistons manufactured by a machining process wherein the piston core is machined, a seal is manufactured, and the core and {TAIL ~ the seal} are mated to form the finished piston 
These manufacturing methods produce { HEAD ~ pistons } having a significantly lower cost per unit than pistons manufactured by a machining process wherein the piston core is machined , a seal is manufactured , and the core and { TAIL ~ the seal } are mated to form the finished piston
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH