Abstract: A scraper ring for a linear motion assembly including an annular body having a contact face adapted to contact an inner component, wherein the annular body comprises a material having a coefficient of linear thermal expansion of at least 75×10?6/° C. An assembly for linear motion including an outer component defining a bore and a first annular recess extending radially outward from the bore; an inner component disposed in the bore, wherein the inner component is adapted to translate longitudinally within the bore; and a scraper ring disposed in the first annular recess and contacting the inner component, wherein there is no component disposed between any portion of the spacer ring and the outer component.

Abstract: A scraper ring for a linear motion assembly including an annular body having a contact face adapted to contact an inner component, wherein the annular body comprises a material having a coefficient of linear thermal expansion of at least 75×10?6/° C. An assembly for linear motion including an outer component defining a bore and a first annular recess extending radially outward from the bore; an inner component disposed in the bore, wherein the inner component is adapted to translate longitudinally within the bore; and a scraper ring disposed in the first annular recess and contacting the inner component, wherein there is no component disposed between any portion of the spacer ring and the outer component.