Rubber O rings, also known as O-rings or O-rings seals, are circular elastomer seals with a round cross-section. They are commonly used in mechanical applications to provide a reliable, leak-proof sealing solution.
The O-ring is typically made of synthetic rubber, such as nitrile rubber (NBR), silicone rubber (VMQ), fluorocarbon rubber (FKM or Viton), or ethylene propylene diene monomer rubber (EPDM), among others. These rubber materials offer various properties such as chemical resistance, temperature resistance, and durability.
The most common shape of an O-ring is a circular cross-section, although variations like rectangular or square-shaped cross-sections are also available. The circular shape allows for efficient sealing between two mating surfaces, such as a shaft and a housing, or two pipe fittings.
The O-ring is designed to be compressed between two surfaces, creating a seal with the pressure applied. It fills the gap between the surfaces and prevents leakage of fluids or gases. The flexibility and resilience of the rubber material allow the O-ring to deform and maintain its sealing function even under pressure or temperature variations.
O-rings are widely used in various industries and applications, including automotive, aerospace, plumbing, hydraulic systems, pneumatic systems, and many others. They are relatively inexpensive, easy to install, and offer reliable sealing performance.