Press Caps, Application Natural Gas, Non-Potable Water, Propane, Compatible Copper Tube Size 1 in, Fitting Connection Type Press Fit, Fitting Material Copper, O-Ring Material HNBR, Specific Fitting Shape Cap, Overall Length 1 7/32 in, Includes Center Stop No Center Stop, Maximum Operating Pressure 200 psi, Maximum Operating Temperature 180 Degrees F.