Design and Material Characteristics
The Festo PUN-H-8x1.25-RT tubing (part number 8204447) is manufactured from TPE-U (polyurethane) with a Shore hardness of D 52 +/-3. This material choice provides a balance of flexibility and durability, making the tubing suitable for demanding pneumatic applications. The red color aids in quick visual identification during installation and maintenance. The tubing is RoHS-compliant and meets the LABS (PWIS) conformity standard VDMA24364-B2-L, which is important for use in paint and coating environments. Additionally, it is certified by the German Technical Control Board (TüV), with certificate number B 013277 0506 00.
Dimensional and Bending Specifications
With an outside diameter of 8 mm and an inside diameter of 5.7 mm, this tubing offers a compact cross-section suitable for standard push-in fittings. The minimum bending radius is 21 mm, while the bending radius relevant for flow rate is 37 mm. These values allow for tight routing in confined spaces without compromising flow efficiency. The tubing is also suitable for use in energy chains, making it a practical choice for moving applications where repeated flexing occurs.
Pressure and Temperature Ratings
The PUN-H-8x1.25-RT can operate within an ambient temperature range of -35°C to 60°C. The operating pressure varies with temperature: for the entire temperature range, it is rated from -13.775 psi to 87 psi, while temperature-dependent operating pressure extends up to 145 psi. For water media, the maximum operating pressure is 0.3 MPa at 0-60°C, as detailed in the manufacturer's diagrams. These ratings provide clear guidance for engineers when designing systems that may experience varying thermal conditions.
Media Compatibility and Application Suitability
This tubing is compatible with compressed air per ISO 8573-1:2010 [7:-:-] and with liquid, ice-free water. It is not recommended for use with metals containing more than 1% copper, zinc, or nickel by mass, which is a consideration for Li-ion battery production environments. The material fire test rating is UL94 HB, and the tubing is not specifically rated for cleanroom use as a statically installed element. For food industry applications, refer to supplementary material information provided by Festo.
Installation and Connection Options
The tubing is designed for straightforward installation with two connection methods: plug connection for 8 mm outside diameter fittings, or barbed fitting with a union nut for 6 mm inside diameter connections. The smooth inner surface reduces friction, facilitating easy assembly and disassembly. The product weight is 0.0287 kg/m, which is lightweight and contributes to ease of handling during installation. These features make the PUN-H-8x1.25-RT a versatile choice for automation, manufacturing, and robotics applications where reliable and flexible pneumatic lines are required.