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特點(diǎn)：外表一面是骨架，一面是橡膠，雙唇口，有彈簧設(shè)計(jì)，通常使用在密封壓力低于1bar之場(chǎng)合，增加防塵的唇部提供對(duì)主唇的保護(hù)，雙唇間中空處填入油脂以防止軸的腐繡，在無潤(rùn)滑的情況下亦能短暫運(yùn)轉(zhuǎn)。
Characteristics: One side of the surface is the skeleton, and the other side is the rubber. It has double lips and the spring design. It is often used on occasions where the sealing pressure is lower than 1bar. The lip part increasing the dust prevention provides the protection for the main lip, and oil will be added between the two lips to prevent the corrosion and rusting of the axis. It can operate temporarily when there is no lubrication.
材質(zhì)：NBR（丁晴橡膠）、ACM（亞克力橡膠）、
Material Quality: NBR (Nitrile Butadiene Rubber), ACM (Acrylic Rubber)
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