Regulations and Quality Standards for Rubber, Silicone, and Teflon Hoses in the Industry

Common Regulations and Standards

Applicable to all types of flexible hoses:

• ISO 1307:2006 – Flexible Hoses – Minimum Bending Radius:
  • Specifies the acceptable minimum bending radius for flexible hoses, ensuring that the material maintains its structural integrity during use.

Rubber Tubes:

1. ISO 3821:2019 – Flexible Hoses for Welding and Cutting Gases:
   • Establishes requirements for flexible hoses used in the transport of welding and cutting gases, defining criteria for material strength, flexibility, and safety.
2. EN ISO 8031:2020 – Flexible Rubber and Plastic Hoses – Determination of Electrical Resistance and Conductivity:
   • Specifies electrical testing methods for flexible rubber and plastic hoses to determine electrical resistance, conductivity, and electrical continuity between metal end fittings.
3. UNI EN ISO 1762 – Rubber Hoses and Hose Assemblies for Liquefied Petroleum Gas (LPG), Propane, and Natural Gas:
   • Specifies requirements for rubber flexible hoses used for the transfer of liquefied petroleum gas (LPG) and natural gas with a maximum working pressure of 25 bar.
4. Uni en iso 1765 – Rubber Hoses for Loading and Unloading Petroleum Products
5. Uni en iso 1825 – Rubber Hoses and Hose Assemblies for Aircraft Ground Fuelling and Defuelling Services – Specifications:
   • Specifies dimensions, construction, and requirements for hoses and hose assemblies used in aircraft ground fuelling and defuelling operations.

Silicone Hoses:

1. USP Class VI – Biocompatibility:
   • Defines the biocompatibility of silicone materials, with applied testing methodologies to ensure suitability for pharmaceutical applications.
2. ISO 10993 – Biocompatibility Evaluation:
   • International standard providing guidelines for the biocompatibility assessment of medical devices, including silicone hoses, ensuring safety in clinical use.

Teflon Tubes:

• FDA 21 CFR 177.1550 – Regulation for Materials in Contact with Food:
  • FDA regulation in the United States for Teflon hoses intended for the food industry, establishing safety criteria for materials in contact with food.

Conclusions

Compliance with regulations and quality standards is crucial to ensure the reliability and safety of rubber, silicone, and Teflon hoses in the industry. The knowledge and application of these standards are crucial for manufacturers to meet the specific requirements of various industrial applications and ensure regulatory compliance.