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3．Application Range
Applied to reciprocated system, especially in low friction, high frequency and heavy loaded condition. Mainly applied to hydraulic and pneumatic devices, servo systems, chemical and food machinery.
4．Characteristics
1- compensates to the distortion of pistons and plungers
2- compact structure saves installing space
3- excellent effect of scraping residue oil films of the piston rod surface from inside
4- excellent compatibility of hydraulic mediums
5- excellent sliding performance
6- stick-slip free starting, no sticking
7- excellent effect of scraping dirts from outside, even firmly bonded clay
