This cap has a length of 1 3/32 inch, a maximum operating pressure of 550 psi and is designed for the following applications: air, flammable liquid, freon, inert gases, non-combustible gases, potable water. It has an operating temperature of 65 Degrees F to 250 Degrees F, and is made of brass. In addition, it is a cap, and 1 1/16"-14 thread. Plus, it has a flared connection type and 1 5/16 inch hex size.