China EPDM Sealing Parts for Drinking Water | Suppliers & Factory for Long-lasting, Non-toxic Solutions
III. Quality Control System
1. Material Testing
- Chemical Stability: ASTM D573 hot air aging test (150°C × 168h, hardness change < ±5A)
- Hygiene and Safety: GB/T 17219 immersion test (lead leaching amount < 0.001mg/L)
2. Process Control
- Compression Molding: Use a 200-500-ton flat vulcanizing machine, and strictly control the vulcanization temperature.
- Dimensional Accuracy: Use a visual inspection machine with 15 cameras for multi-directional inspection, and strictly control the tolerances of key dimensions according to customer requirements.
IV. Technological Development Trends
- 1 Nano Modification: The graphene/EPDM composite material increases the fatigue resistance life by 200%.
- 2 Intelligent Sealing: The EPDM sealing ring integrated with an optical fiber sensor realizes real-time leakage monitoring.
- 3 Environmentally Friendly Process: The technology without in-mold spraying reduces the VOC emissions by 90%.
Conclusion
The peroxide EPDM sealing parts of our company have passed the authoritative certifications of 12 countries/regions, maintain stable performance within the temperature range of -55°C to 150°C and the pressure range of 0-20MPa, and the leakage rate is controlled within the ISO 5208 Class A standard. The products have been successfully applied to more than 500 municipal water supply projects worldwide and over 100,000 high-end residential water purification systems, providing full-life-cycle protection for drinking water safety.
Frequently Asked Questions
What testing standards do your EPDM materials undergo for chemical stability?
Our EPDM materials undergo the ASTM D573 hot air aging test at 150°C for 168 hours, ensuring the hardness change is strictly controlled within less than ±5A.
Are these rubber sealing parts safe for drinking water systems?
Yes. The sealing parts pass the GB/T 17219 immersion test for hygiene and safety, keeping the lead leaching amount strictly under 0.001mg/L.
How do you ensure the dimensional accuracy of your sealing parts?
We use a high-precision visual inspection machine equipped with 15 cameras for multi-directional inspection. This allows us to strictly control the tolerances of key dimensions based on customer requirements.
What is the working temperature and pressure range of the peroxide EPDM sealing parts?
They maintain stable performance within a temperature range of -55°C to 150°C and a working pressure range of 0 to 20MPa.
What environmental benefits does your new process offer?
By adopting a technology without in-mold spraying, we successfully reduce VOC (Volatile Organic Compounds) emissions by 90% during the manufacturing process.
Where are your peroxide EPDM sealing parts currently used?
Our products have been successfully implemented in over 500 municipal water supply projects worldwide and more than 100,000 high-end residential water purification systems.