1. 📉 The Background: Why Hypalon® Was Discontinued
Hypalon® (Chlorosulfonated Polyethylene, CSM), originally developed by DuPont, was once a gold standard in synthetic rubber for its:
🌡 Extreme temperature resistance
🧪 Excellent chemical and UV resistance
⚙️ High mechanical durability
However, DuPont discontinued Hypalon® production in 2010, leaving a significant gap in industries such as:
Automotive & rail
Marine & aerospace
Roofing membranes & chemical liners
Cable sheathing & protective coatings

2. 🔄 The Challenge: Finding Suitable Replacements
The top Hypalon® alternative rubbers include:
Material Full Name Pros Cons
CSM Chlorosulfonated Polyethylene Closest match to Hypalon®, excellent weather, ozone, chemical resistance Moderate cost
EVM Ethylene-Vinyl Acetate-Maleic Anhydride Good heat & oil resistance Lower mechanical strength
FKM Fluoroelastomer Excellent heat & chemical resistance High cost
CR Chloroprene Rubber (Neoprene) Good durability & weather resistance Lower chemical resistance
Conclusion: Only CSM provides a well-balanced performance and cost profile similar to Hypalon®.

3. ✅ Why Choose CSM from YQXPOLYMER?
YQXPOLYMER offers advanced CSM rubber formulations with enhanced durability, consistent quality, and scalable supply.
📌 Product Advantages:
Full compatibility with Hypalon® formulations
Ozone, UV, and chemical resistance
Working temp range: –40°C to +160°C
Flame-retardant and marine-grade options
Customization support for OEMs
📦 Supply Strength:
🏭 Capacity: 5,000+ MT/year
🔍 Quality controlled production
🚚 Fast delivery across Asia, Europe, and Americas
Explore our full product line: YQXPOLYMER CSM Rubber Grades

4. 🛠 Application Guide by Grade
YQXPOLYMER CSM Grade Key Feature Applications
CSM 45 General purpose Hoses, cable jackets, roofing
CSM 60 High strength Rollers, seals, molded parts
CSM FR Flame retardant Rail interiors, wire insulation
CSM ChemRes Chemical resistant Liners, chemical tanks
CSM Marine Salt & UV resistance Marine covers, inflatable boats

5. 🧭 Conclusion: Make the Smart Switch to YQXPOLYMER CSM
YQXPOLYMER’s next-gen CSM is the most capable successor to Hypalon®, delivering top performance in thermal stability, weathering, and chemical resistance.
We offer formulation guidance, global shipping, and long-term partnership support for your material transition.

📩 Contact YQXPOLYMER Today
Let us help you with the right CSM solution.
📬 Email: [email protected]
📞 Phone / WeChat: +86-135-4070-2776 | +86-135-8634-6868
🌐 Website: www.yqxpolymer.com
📍 Address: No. 2088, Jiuliting Avenue, Caoqiao Street, Pinghu City, Zhejiang Province, China