In order to properly inspect rubber insulation gloves, any dirt or contaminates should be cleaned off the rubber. Then the rubber should be which to trap air?

In order to properly inspect rubber insulation gloves, any dirt or contaminates should be cleaned off the rubber. Then the rubber should be which to trap air?

• A. tied with a string
• B. closed
• C. twisted
• D. expanded

Answer: (D)

Air testing is how you check rubber insulating gloves for defects. After cleaning the dirt off, you expand the glove to trap air inside, creating an internal pocket you can press against for leaks. This expansion inflates the material so any cracks or pinholes will reveal themselves as air escaping or deformities, ensuring the glove can truly insulate. The other actions won’t create the necessary internal pressure for a proper leak check: tying or twisting wouldn’t reliably trap or inflate the air inside, and merely closing the opening doesn’t provide the expansion needed for a thorough inspection.

Air testing is how you check rubber insulating gloves for defects. After cleaning the dirt off, you expand the glove to trap air inside, creating an internal pocket you can press against for leaks. This expansion inflates the material so any cracks or pinholes will reveal themselves as air escaping or deformities, ensuring the glove can truly insulate. The other actions won’t create the necessary internal pressure for a proper leak check: tying or twisting wouldn’t reliably trap or inflate the air inside, and merely closing the opening doesn’t provide the expansion needed for a thorough inspection.