{HEAD ~ A method} of forming a floating piston includes fabricating {TAIL ~ a piston cup}, wherein the piston cup includes a top, a sidewall void of any seal gripping irregularities, and an open end, and forming an elastomer seal over the sidewall of the piston cup 
includes fabricating
{ HEAD ~ A method } of forming a floating piston includes fabricating { TAIL ~ a piston cup } , wherein the piston cup includes a top , a sidewall void of any seal gripping irregularities , and an open end , and forming an elastomer seal over the sidewall of the piston cup
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