Usage Tips:Description This item is a set of ring seals for professional or home use. It is made of material which features spray proof 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: Rubber.- Size: About 8x8x1.3cm.- Premium source material, spray proof 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.- Widely used for automobile, electrical appliance, mechanical, industrial, construction, household, and other fields.- It can efficentily proof spray keep your weste or things in good order.- Easy to stall and remove, seal perfectly.Package list: 3 x seal rings