The Sealing Ring (also known as a Lock Ring) features smooth threads and large opening for easy installation while maintaining the strength and long-term durability that metering operations demand. It also features an optional area for barrel or pad lock. The extended finger-grip screw head allows for easy hand tightening, and the reversible screw design eliminates the need to inventory left and right versions. The sealing ring is easy to install and hand tighten, making it one of the most versatile sealing rings on the market.