- In ductwork, an airtight connection of nonmetallic materials installed between ducts or between a duct and fan to isolate vibration and noise.
- A connector in a piping system that reduces vibration along the pipes and compensates for misalignment.
- An electrical connection that permits movement from expansion, contraction, vibration, and/or rotation.
- An electric connector which permits a given amount of expansion, contraction, or movement of the connected parts. Well suited, for instance, in environments where the temperature varies considerably.