The Reinz O-Ring - 407640810 is a high-quality sealing ring designed for use in various industrial and automotive applications. It is made of durable materials to ensure a tight and secure seal, preventing leaks and contamination. This O-ring has a diameter of 40.7mm and a thickness of 8.1mm, making it suitable for a wide range of sealing needs. It is resistant to heat, chemicals, and other harsh conditions, making it a reliable choice for demanding environments. The Reinz O-Ring - 407640810 is a versatile and essential component for maintaining the integrity and efficiency of various systems.