Watts-FMPE-38-B-250 Flowmatic Polyethylene Tubing, 3/8" IN OD, 250 FT, BlackWatts Flowmatic 3 8" Polyethylene Tubing 250 FT Roll Virgin FDA grade polyethylene tubing for RO systems, water conditioners, ice makers, and custom water purification installations FDA Approved Material 180 PSI @ 70F Stress Crack Resistant 250 FT Roll The Watts FMPE 38 B 250 delivers reliable performance for residential and light commercial water applications. Manufactured from virgin non toxic polyethylene, this 3 8" OD tubing resists stress