20pcs Outer Diameter 20mm Waterproof Elastic Polyurethane Shock-absorbing Gaskets, Inner Diameter 10mm Annular Buffer Spacer, Thickness 4mm, 20x10x4mm

Material: Made of polyurethane material, good chemical stability, good flexibility, not easy to deform, long service life Features: High strength, aging resistance, good waterproof performance, strong resilience, good impact resistance Function: Can be used as an auxiliary accessory for screw connection, providing multiple functions such as sealing, shock absorption, and anti-loosening Sound insulation and noise reduction: High elasticity and viscous damping characteristics can reduce equipment operation noise and reduce the spread of sound bridge effect Applications: Tables and chairs, shelves, automobiles, electrical appliances, furniture, lamps, mechanical equipment, optical instruments, measuring instruments, electronic equipment, etc.