A bodok seal is a specialized washer designed to create a gas-tight seal between a gas cylinder and a regulator or yoke-type connection. It is most commonly used in medical settings, such as hospitals and dental offices, for breathing and anesthetic equipment.
Key features of a Bodok seal include:
Material: It is typically made of a non-combustible material like neoprene or a similar rubber compound.
Construction: The seal has a peripheral metal reinforcing ring that prevents it from "splaying" or deforming under high pressure. This design is an improvement over older, traditional fiber washers that were prone to leakage and damage.
High-Pressure Resistance: Bodok seals are engineered to withstand the high pressures of medical gas cylinders, which can be around 2,000 psi (140 bar) when full.
Safety: The seal is an essential part of the Pin Index Safety System (PISS), which ensures that the correct gas cylinder is connected to the appropriate equipment. The system relies on a unique pin configuration on the regulator yoke that matches corresponding holes on the cylinder valve, and the Bodok seal is crucial for making the connection airtight.
Maintenance: It is important to check and replace the Bodok seal regularly, as wear and tear can compromise the seal and lead to dangerous gas leaks.
