In construction, hex head self-drilling screws are commonly used in roofing, siding, and framing projects. They offer a strong, secure connection while reducing the risk of material damage that can occur with conventional drilling methods They offer a strong, secure connection while reducing the risk of material damage that can occur with conventional drilling methods
Common materials used in oil seals include nitrile rubber, fluorine rubber, silicone rubber, acrylic rubber, polyurethane, polytetrafluoroethylene, etc. When selecting the material of the oil seal, the compatibility of the material with the working medium, the adaptability to the working temperature range and the ability of the lip to follow the rotating shaft at high speed must be considered. When the oil seal is working, the temperature of its lip is higher than the working medium temperature by 20~50°C. Attention should be paid when selecting the oil seal material. The working range of the oil seal is related to the material used for the oil seal: the material is nitrile rubber (-40~120°C), Aggreko rubber (ACM) -30~180°C, fluorine rubber (FPM) -25~300°C.
Oil seals are also dirt, lip, shaft, and grease seals. They’re simple devices installed in rotary shaft equipment to minimize the risk of lubricant leakage and prevent other foreign substances such as water, dirt, and dust from entering.



Rubber covered
What are Oil Seals - Guide to what an Oil Seal is used for
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