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: Spiral grinding or marks must be avoided to prevent a "pumping effect" that causes leakage. | เวอร์ทัส 4. Material Specifications
is the German industrial standard that defines the dimensions and technical requirements for Rotary Shaft Lip Seals din 3760 pdf
The standard categorizes seals into basic types based on their construction and the presence of a dust lip: : Standard rubber-covered outer diameter. : Spiral grinding or marks must be avoided
