Number one is number one.
Piston ring main function has: 1, the seal (2) thermal conductivity, 3,. From seal \ \ supporting function of thermal conductivity: a ring, the strongest second ring, three-ring worst.. From the lubrication Angle for: three-ring strongest, erhuanxi next, one link is the worst. A ring sealing function mainly, and thermal conductivity, support, and second ring sealing function and cloth oil scraping effect, thermal conductivity also support, but I don't have a good ring sealing.. Cloth oil scraper and no three-ring, rather then transition. Oil ring is mainly oil and scrape off excess grease, sealing, thermal conductivity, and supporting role.. Is the worst out of the three ring..
go on->ss
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