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