The PUSH 'N SEAL condenser plug has a molded rubber body with an inside cavity to allow for contraction when inserting or removing from the tube. It can be inserted by pushing against the inside cavity wall. While the head provides a stop during insertion, it also provides an area for gripping when removing.
This condenser plug is inserted into a tube by use of an applicator. As pressure is applied to molded inside cavity, the body length increases -- reducing the body diameter -- allowing the plug to be inserted into the tube. As the pressure is removed, the body expands to form a seal. |