ITEM NAME:Air Angle Flow Control Valve Tube Pneumatic Push In Fitting3C Model Number: SL4-M5 Operating Temperature: 0 - 60 Â °C / 32 to 140F Elbows: Swivel (Rotate 360Â °) Application: Air Recommended Tubing Material: Polyurethane, Nylon, Polyethylene, Polypropylene. Material of Construction: Plastic Body: PBT (Polybutylene terephthalate) Metal Body: Nickel Plated Brass Grip Ring: Stainless Steel Thread Sealant: Teflon.Thread Sealant: Teflon. Application: Air. Grip Ring: Stainless Steel.