How to choose the sealing ring for ferrules and what are the standards?

When selecting ferrule seal rings, you can refer to the following standards and procedures:

1. Material Standards

• Rubber materials:Common types include NBR , EPDM , SILICONE and FKM. When selecting materials, factors such as temperature resistance, oil resistance, and chemical resistance should be considered.
• Plastic materials: such as PTFE , suitable for high temperature and highly corrosive environments.

2. Size Standards

• Inner and outer diameters:Select the appropriate sealing ring based on the dimensions of the quick-connect fitting. Refer to international standards (such as ISO, DIN,3A )
• Thickness: The thickness of the sealing ring must also match the design of the joint.

3. Pressure Standards

• Select the appropriate seal based on the system’s operating pressure to ensure it can withstand the required pressure. Typically, the seal’s rated pressure should be higher than the system’s maximum operating pressure.

4. Temperature Standards

• Confirm the temperature range of the sealing ring material to ensure it will not fail at the operating temperature. Different materials have different temperature ranges, so the appropriate material must be selected based on the specific application.

5. Media Compatibility

• Ensure the sealing ring material is compatible with the medium it comes into contact with to avoid seal failure due to chemical reactions. Refer to the material’s chemical compatibility table.

6. Standards and Specifications

• Refer to relevant industry standards

7. Installation Method

• Understand how quick-connect couplings are installed and select the appropriate type of sealing ring (such as O-rings, flat washers, etc.).

8. Environmental Factors

• Consider the special requirements of the usage environment, such as dustproof and waterproof, and select the appropriate sealing ring.
• When making a selection, it is best to consult a professional or refer to relevant technical documents to ensure that the selected seal can meet the needs of the actual application.

By following the above standards and procedures, you can more scientifically select the appropriate ferrule seal rings.