| 摘要 |
A shock absorber (2) is comprised of a cylinder defining a chamber (24, 26) therein, the cylinder containing a fluid (12), a piston rod (14) sealingly projecting into the cylinder and being axially displaceable with respect to the cylinder; a piston (8) being attached to the piston rod (14), the piston (8) being slidably disposed within the cylinder to sealingly divide the cylinder into first and second chambers (24, 26); the means for permitting fluid communication being disposed in at least a portion of the piston (8). The fluid is comprised of a polyol ester the polyol component of which is a hindered polyol and the carboxylic acid component is a mono-carboxylic acid having from about 5 to about 18 carbon atoms. |
