The 28.0X 42.5X 8.0 B1 Metric Oil Seal from Freudenberg-NOK is designed for effective sealing in various industrial applications. With an inner diameter of 28.0 mm, outer diameter of 42.5 mm, and a thickness of 8.0 mm, this oil seal provides a secure fit and reliable performance. Constructed from high-quality materials, it offers excellent resistance to oil and other fluids, making it ideal for demanding environments. The B1 series meets industry standards for quality and reliability, ensuring long-lasting operation in your machinery.