DescriptionThis item is a set of ring seals for professional or home use. It is made of material which features heat-resistant, anti-corrosion, pollution free, odorless and eco-friendly for durable and safe use. Widely used for automobile, electrical appliance, mechanical, industrial, construction, household, and other fields.Feature- Color: Black. - Material: NBR. - Size: 1.71x1.71x0.3cm. - Premium source material, heat-resistant, supper elasticity, anti-corrosion, pollution free, odorless and eco-friendly for durable and safe use. - 2 kinds of different sizes to meet different requirements. - Stable and durable performance. Appropriate mechanical strength, including expansion strength, elongation and tensile strength, etc. Full of elasticity and resilience. - Fit for car, door, window, electric appliance, bearing, pump, home appliances, fittings and more. Warm Tip: Dear buyer, due to lighting effect, monitor's brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you!