Flexible Silicone Rubber Tubing 5Mm Id X 8Mm Od 27.9' Water Air Hose Pipe This soft, flexible tubing is designed for a variety of pump and transfer applications. It is made of silicone rubber which is nonreactive, flexible, and resistant to high temperatures. The tubing can withstand temperatures from -76 to +428F. The thickness of tube = ( OD - ID ) / 2 Uses: Siphoning draining; Water/oil change; Machinery connecting pipe; Electrical equipment, such as the casing; Silicone rubber tube - will withstand repeated use and for visual inspection of fluids. Size: 5x8mm / 0.2"x0.31"(IDxOD); Length: 8.5M(27.9'); Wall Thickness: 1.5mm(0.06") Operating Temperature: -76 to +428F; Hardness: 65 Degree; Good electrical and weather ability properties - resists u.V., ozone, gases, and moisture. Silicone tubing - great for fluid handling, peristaltic pumps, siphoning, draining, aquaponics and water/oil change, etc. Note: Silicone tube is much softer than pvc tube or nylon tube