Product name: Luftdruckschlauch (PU-Röhre) What this product does Flexible silicone hose made from silicone rubber for reliable transfer of liquids and gases. Designed for long service life: flexible, resistant to high temperatures, and does not deteriorate when used outdoors. Appropriate for fluid handling, drainage, and water or air lines (for example aquarium supply and aeration). Key benefits — why you need it Flexibility: easy to route through tight spaces and connect to pumps, valves, and fittings. Temperature resistance: maintains performance under elevated temperatures where ordinary plastics would soften or deform. Weather resistance: suitable for outdoor use without rapid degradation from sunlight or weather exposure. Durability: built to withstand repeated bending and routine use, reducing replacement frequency. Main features Material: silicone rubber (flexible, high temperature resistant). Primary function: transfer of liquids and gases (fluid handling, drainage, water and air hoses). Product designation: Luftdruckschlauch (PU-Röhre). Available sizes: 4 * 2.5 mm, 6 * 4 mm, 8 * 5 mm, 10 * 6.5 mm, 12 * 8 mm, 14 * 10 mm, 16 * 12 mm. Compatibility and usage notes Use with fittings and connectors that match the hose size; verify inner/outer diameter compatibility when replacing existing tubing. Suitable for aquarium water and air lines, general drainage, and other low- to moderate-pressure liquid and gas transfers. Not specified for use with aggressive chemicals or high-pressure hydraulic systems; confirm chemical compatibility and pressure requirements for specialized applications. Practical application examples Aquarium setup: route water return lines, connect air pumps to air stones, or link filters with clear, flexible tubing that resists heat and outdoor exposure. Home and garden drainage: run temporary or permanent drainage lines for small pumps or water transfer tasks where UV and weather resistance matters. Low-pressure pneumatic or fluid-handling tasks: use as an air or water supply line for small compressors, pneumatic tools, or workshop fluid transfers (ensure the chosen size and material meet pressure and chemical compatibility needs). Ordering information Choose the size that matches your fittings: 4 * 2.5 mm, 6 * 4 mm, 8 * 5 mm, 10 * 6.5 mm, 12 * 8 mm, 14 * 10 mm, or 16 * 12 mm. Product name for reference: Luftdruckschlauch (PU-Röhre).