99% of all gas fittings at the meter use this fitting to cap off the flow of gas to the underground line. It is available at any hardware stores.
Specs
Metal Flared Tube Fittings; Type: Flare Cap; Flared Degrees: 45.000; End Connections: Flare; Tube Outside Diameter: 3/8; Material: Lead Free Brass; Max Working Pressure Dynamic: 1,000
Tube Outside Diameter
3/8
Max Working Pressure Dynamic
1000
Max Working Pressure Static
1000
