DescriptionThis item is a set of assorted ring seals for professional or home use. It is made of Hydrogenated Nitrile Butadiene Rubber which features heat-resistant, anti-corrosion, pollution free, odourless and eco-friendly for durable and safe use. Widely used for electrical appliance, mechanical, industrial, construction, household, and other fields.Features- Color: Black. - Material: Rubber. - Size: Approx. 3.5 x 3.5 x 0.1cm. - Premium Hydrogenated Nitrile Butadiene Rubber , heat-resistant, supper elasticity, anti-corrosion, pollution free, odourless and eco-friendly for durable and safe use. - Stable and durable performance. Appropriate mechanical strength, including expansion strength, elongation and tensile strength, etc. Full of elasticity and resilience. - Wide application. Suitable for electrical appliance, mechanical, industrial, construction, household, and other fields.