Regarding the nipple O-Ring Seal on the High Pressure Coupling, which statement is correct?

Regarding the nipple O-Ring Seal on the High Pressure Coupling, which statement is correct?

• A. It can be inspected at any time, but is optional.
• B. It must be inspected before every use.
• C. It is not used on all connections.
• D. It is only relevant when the cylinder is new.

Answer: (B)

Pre-use inspection of high-pressure seals is essential for safety. The nipple O-ring seal on the high-pressure coupling is a critical interface that must be intact to keep the system airtight under high cylinder pressures. If this seal is damaged, worn, cracked, flattened, or has extrusion in its groove, a leak or sudden failure can occur as soon as the system is pressurized, posing serious risk to the user. Because conditions like heat, aging, and handling can degrade seals, each connection should be checked before every use so any defect is caught before it can cause trouble. This seal is not optional, not limited to new cylinders, and is needed on all connections where a seal is required. If you see any signs of damage or deformation, or if the seal cannot be seated properly, it should be replaced and the system rechecked. Remember, the goal of the pre-use check is to ensure a reliable, leak-free connection every time you connect to the cylinder.

Pre-use inspection of high-pressure seals is essential for safety. The nipple O-ring seal on the high-pressure coupling is a critical interface that must be intact to keep the system airtight under high cylinder pressures. If this seal is damaged, worn, cracked, flattened, or has extrusion in its groove, a leak or sudden failure can occur as soon as the system is pressurized, posing serious risk to the user. Because conditions like heat, aging, and handling can degrade seals, each connection should be checked before every use so any defect is caught before it can cause trouble.

This seal is not optional, not limited to new cylinders, and is needed on all connections where a seal is required. If you see any signs of damage or deformation, or if the seal cannot be seated properly, it should be replaced and the system rechecked. Remember, the goal of the pre-use check is to ensure a reliable, leak-free connection every time you connect to the cylinder.