• Flexible rubber material with high resistance to temperature, wear, and corrosion. • Dimensions with an inner diameter of 4 mm, outer diameter of 9 mm, and thickness of 1,2 mm. • Useful for sealing applications in water, oil, and air connections. • Helps dampen pressure and friction, increasing the contact area and protecting surfaces. • Suitable for use in domestic installations, appliances, faucet pipes, hoses, and irrigation tools. • The package contains 40 units of flat rubber washers.