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  • Using a double needle involves a few critical steps to ensure proper functionality. First, it is essential to select the right type of needle for the fabric being used. Double needles come in various sizes and distances between the needle points, which correspond to different applications. For example, a narrower spacing is suitable for delicate fabrics, while wider spacing works well for more durable materials.


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  • 7. Perfluoro rubberThe high temperature of perfluoro rubber is superior to that of silicone rubber. It has good 
  • If the gasket is beyond repair or shows signs of severe wear, it's time to replace it. Follow these steps for a proper replacement
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  • 4. Fluoro rubber
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  • A blue valve cover gasket is essentially a seal that sits between the valve cover and the head of a combustion engine. Its primary function is to prevent oil from leaking out of the engine and onto other parts of the vehicle. Made from materials like rubber or cork, this gasket is designed to withstand the high temperatures and pressures within an operating engine.
  • Figure 3: Sealing function of main lip radial load
    * KOYO is a registered trademark of JTEKT.


  • Prevent entry of dust and foreign matter (dirt, water, metal powder, etc.) from outside
  • By far, nitrile is the most popularly used, but buyers who need seals for applications involving high-speed shaft rotation increased interest. Viton is another alternative for silicone and poly-acrylic because it’s more resistant to harmful chemicals and abrasion and works better in higher temperatures.

  • In the realm of home plumbing and water management, the role of a sump pump gasket seal cannot be overstated. A seemingly small component, it plays a significant part in ensuring the efficient functioning and longevity of your sump pump system.