Rubber Washer / Gasket

Key functions include:

Sealing: Creates a watertight or airtight seal in joints and connections, commonly used in faucets, pipes, and valves.
Vibration Dampening and Shock Absorption: The material's elasticity helps absorb mechanical shocks and vibrations, which reduces noise levels and prevents damage or the loosening of fasteners in machinery, appliances, and automotive applications.
Insulation: Provides electrical insulation between conductive components, protecting sensitive parts from moisture and preventing short circuits.
Cushioning and Spacing: Acts as a spacer or wear pad to distribute the load of a threaded fastener evenly, which protects the surface from damage and wear.
Corrosion Prevention: Insulates metal surfaces from moisture or different types of metals, which helps prevent corrosion.