The CSST Union Tee 3/4“ is a durable, corrosion–resistant fitting designed to join two lengths of corrugated stainless steel tubing (CSST) together. It features a threaded connection and an O–ring seal for a secure fit. The tee is made of high quality stainless steel and is resistant to rust and other environmental conditions. It can be used in both indoor and outdoor applications and is suitable for use with natural gas, propane, and other fuel lines.