Chlorosulfonated Polyethylene (CSM): Hypalon® Replacement for Demanding Applications
Chlorosulfonated Polyethylene (CSM) is a high-performance halogenated synthetic rubber originally developed by DuPont and commercialized as Hypalon®. Known for its durability, weather resistance, and chemical stability, Hypalon® was widely used across automotive, marine, military, and construction industries.
In 2010, DuPont officially discontinued Hypalon® production due to environmental concerns and corporate restructuring. To fill the global supply gap, YQXPOLYMER developed its own CSM line—offering full-grade replacements with enhanced formulation stability and global technical support.
🏭 Our Capabilities:
- 🏗 Production capacity: 5,000 MT/year
- 🔬 Fully in-house chlorosulfonation R&D
- 🔧 Grades available from Mooney 30–110, Cl 25–43%
- 📦 Formats: raw gum, pre-compounded, or thermoplastic sheet
- 🌍 Global delivery with TDS, REACH, RoHS documentation
⚙️ Key Advantages of YQXPOLYMER CSM
- ✅ Excellent ozone, UV, and weather resistance
- ✅ Strong acid, alkali, oil, and solvent resistance
- ✅ Good flame retardancy (UL 94 HB or V-0 with compounding)
- ✅ Compatible with ZnO, MgO, sulfur, or peroxide curing
- ✅ Grades available for thermoplastic or vulcanized use
🧪 CSM Grades – Technical Specifications, Hypalon® Alternatives & Applications
|
Grade |
Cl (%) |
S (%) |
Volatile (%) |
Tensile (MPa) |
Elongation (%) |
Mooney Viscosity (ML1+4, 100°C) |
Hypalon® Equivalent |
Typical Applications |
|
CSM-403 |
35±2 |
1.0–1.5 |
≤0.5 |
≥25 |
≥450 |
40–50 |
Hypalon® 40 |
General molded goods |
|
CSM-503 |
35±2 |
1.0–1.5 |
≤0.5 |
≥25 |
≥450 |
50–60 |
Hypalon® 40S |
Flexible hose covers, cable sheathing |
|
CSM-603 |
35±2 |
1.0–1.5 |
≤0.5 |
≥25 |
≥450 |
60–70 |
Hypalon® 45 |
Fuel hoses, brake tubing |
|
CSM-703 |
35±2 |
1.0–1.5 |
≤0.5 |
≥25 |
≥450 |
70–80 |
Hypalon® 45 |
Chemical gaskets, pipes |
|
CSM-803 |
35±2 |
1.0–1.5 |
≤0.5 |
≥25 |
≥450 |
85–95 |
Hypalon® 60 |
Tank linings, stiff rubber sheets |
|
CSM-903 |
35±2 |
1.0–1.5 |
≤0.5 |
≥25 |
≥450 |
95–110 |
Hypalon® 85 |
Diaphragms, vibration dampers |
|
CSM-604 |
43±2 |
1.0–1.5 |
≤0.5 |
— |
— |
50–70 |
Hypalon® 4022 |
Solvent-resistant coatings |
|
CSM-48 |
43±2 |
1.0–1.5 |
≤0.5 |
— |
— |
70–90 |
Hypalon® 4055 |
Flame-retardant jacketing |
|
CSM-45 |
25±2 |
1.0–1.5 |
≤0.5 |
— |
— |
35–45 |
Hypalon® TP |
Thermoplastic liners, membranes |
|
CSM-301H |
43±2 |
1.0–1.5 |
≤0.5 |
— |
— |
1000–2000 mPa·s* |
Hypalon® 4022 |
Adhesives, solvent rubbers |
|
CSM-301L |
43±2 |
1.0–1.5 |
≤0.5 |
— |
— |
400–600 mPa·s* |
Hypalon® 20 |
Spray-grade coatings |
|
CSM-20 |
30±2 |
1.3–1.7 |
≤0.5 |
— |
— |
30–40 |
Hypalon® 29 |
Blending-grade, low-temp rubbers |
|
CSM-HV40 |
35±2 |
1.0–1.5 |
≤0.5 |
— |
— |
45–50 |
Hypalon® 30 |
Industrial seals, molded parts |
|
CSM-HV50 |
35±2 |
1.0–1.5 |
≤0.5 |
— |
— |
55–60 |
Hypalon® 55 |
Oil-resistant linings |
*CSM-301H and CSM-301L measured as 25% toluene solution viscosity at 25°C.
🧭 Hypalon® to YQXPOLYMER CSM Migration Guide
|
Original Hypalon® Grade |
✅ Suggested CSM Grade |
|
Hypalon® 40 |
CSM-403 |
|
Hypalon® 40S |
CSM-503 |
|
Hypalon® 45 |
CSM-603 / CSM-703 |
|
Hypalon® 60 |
CSM-803 |
|
Hypalon® 85 |
CSM-903 |
|
Hypalon® 4022 |
CSM-604 / CSM-301H |
|
Hypalon® 4055 |
CSM-48 |
|
Hypalon® TP |
CSM-45 |
|
Hypalon® 20 |
CSM-301L |
|
Hypalon® 29 |
CSM-20 |
|
Hypalon® 30 |
CSM-HV40 |
|
Hypalon® 55 |
CSM-HV50 |
🏭 Industry Applications
- 🚗 Automotive: Fuel hoses, vibration damping, brake lines
- 🧪 Chemical: Acid tanks, anti-corrosion lining, gaskets
- ⚡ Power & Cable: UV/flame-resistant jacketing
- 🌊 Marine: Inflatable boats, wet environment rubber
- 🏗 Construction: Waterproof membranes, coatings
- 🧵 Adhesives/Coatings: Spray rubbers, contact adhesives
🙋 Frequently Asked Questions (FAQ)
❓ Why did DuPont discontinue Hypalon®?
DuPont ended production in 2010 due to restructuring and regulatory issues with halogenated materials.
❓ Is YQXPOLYMER CSM chemically equivalent to Hypalon®?
Yes. All grades are chlorosulfonated polyethylene and matched in Mooney viscosity, chlorine %, and performance.
❓ What curing systems can I use?
ZnO, MgO, sulfur, or organic peroxide—depending on the application.
❓ Can CSM be used outdoors?
Yes. It has top-level resistance to UV, ozone, and weathering.
❓ Operating temperature?
−40°C to +150°C (short-term up to 160°C).
❓ Do you offer uncured or thermoplastic CSM?
Yes. CSM-301H, CSM-301L, and CSM-45 are solvent-grade or thermoplastic options.
❓ Packaging?
25kg kraft bags or 500–1000kg jumbo bags. Customizable.
❓ Compliance?
✅ RoHS
✅ REACH
✅ Halogen-controlled
Certificates available.
❓ Can you help with formulations?
Yes. Our team offers compounding and process guidance.
❓ MOQ & Lead Time?
MOQ: 1 MT. Lead time: 7–14 working days. Global delivery available.
🧱 About YQXPOLYMER
YQXPOLYMER is a performance Polymer and Modified Epoxy Resin manufacturer in China. We specialize in:
- Chlorosulfonated Polyethylene (CSM)
- Modified Epoxy Resins
- Functional Elastomers
📬 Email: [email protected]
📞 Tel/ WeChat: +86-135-4070-2776
🌐 Website: www.yqxpolymer.com
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