6mm Tube to 38 Inch NPT Male Push to Connect FittingsCEKER Pneumatic Connector Tube Fittings Air Line Fittings Push in Air Compressor Accessories for 3D Printer 5Packs

CAUTION  1.The tube connectors are primarily made for air and water (No Freezing). Other fluid types are highly prohibited. 2. The use of pneumatic connector is limited to areas that are highly prone to fire outrage 3. Don't use the connections in areas whose water temperature is above 60'C 4. To avoid leakages and damage,you're advised to resist the temptation of adding extra loads to the push connectors USER GUIDE  5.Carefully examine the tube connectors ends for a right angle cutting. Don't also forget to check the external connectors surface for any scratch. 6.Pneumatic composite should not be used for live swivel applications. 7.Body and collar are made of Nylon 6.6, gripping ring is stainless steel, and D seal and O-rings are Nitrile.