🌟 Why CSM / Hypalon® Remains a Trusted Choice
CSM (Chlorosulfonated Polyethylene), often recognized by the trade name Hypalon®, has long been valued for its exceptional resistance to chemicals, UV, ozone, and weathering. While DuPont discontinued Hypalon® production in 2010, CSM remains widely produced by global manufacturers—including YQXPOLYMER—to serve critical industrial applications such as:
✅ Chemical containment and liners
✅ Roofing membranes
✅ Flexible hoses and ducting
✅ High-performance gaskets and seals
✅ Protective coatings
If you’re planning to specify CSM in your next project, this guide will walk you step by step through the process—from material selection to final installation.

📝 Step 1: Understand Your Performance Requirements
Before choosing any CSM compound, define your application parameters:
Chemical Exposure:
Will the material contact acids, alkalis, oils, or solvents?
CSM offers outstanding chemical resistance—especially to acids and oxidizing agents.
Temperature Range:
CSM performs reliably from -35 °C to +130 °C.
For extended high-heat exposure, consult YQXPOLYMER technical support to select a heat-stabilized formulation.
UV and Weathering:
CSM is highly resistant to sunlight, ozone, and aging, making it ideal for outdoor or marine use.
Mechanical Properties:
Specify tensile strength, elongation, and hardness requirements early in the design process.
YQXPOLYMER offers formulations from 40–90 Shore A.

🧩 Step 2: Select the Right Grade and Form
CSM is available in:
✅ Solid Rubber Compounds: For extrusion and molding applications.
✅ Calendered Sheets: For liners, membranes, and gasketing.
✅ Coated Fabrics: For protective coverings and inflatable structures.
Customization Options:
Color (black, grey, custom colors)
Surface finish (smooth, textured)
Reinforcement layers (fabric or mesh)
Flame-retardant or heat-resistant grades
Tip: Always request technical data sheets and samples to confirm suitability.

⚙️ Step 3: Plan Your Fabrication Process
Depending on your product design, you may use:
Molding:
Compression molding and transfer molding are common for CSM gaskets and seals.
Curing temperatures typically range from 150–180 °C.
Extrusion:
Suitable for hose, profiles, and weatherstrips.
YQXPOLYMER can provide pre-compounded materials optimized for smooth extrusion.
Lamination & Bonding:
CSM can be bonded to textiles and substrates with appropriate adhesives.
Surface preparation (light abrasion and cleaning) is recommended for optimal adhesion.
Welding & Heat Sealing:
For coated fabrics and membranes, hot air welding can create seamless joints.
Consult your equipment supplier to verify compatibility.

🛡️ Step 4: Ensure Regulatory and Safety Compliance
When using CSM:
Verify compliance with relevant standards (e.g., ASTM D2000, ISO 3302)
For applications in potable water or food contact, confirm certification requirements
Follow safe handling procedures—though CSM is relatively inert, proper ventilation and PPE are important during curing or bonding

🏗️ Step 5: Validate Performance with Prototyping
Before committing to production:
✅ Test your prototype under real-world conditions
✅ Check for chemical compatibility, dimensional stability, and mechanical performance
✅ Adjust formulation or processing parameters as needed
YQXPOLYMER provides support throughout this process, including:
Customized compound development
Small-batch trial runs
Application engineering assistance

💼 Why Choose YQXPOLYMER as Your CSM Partner?
With decades of experience in chlorosulfonated polyethylene formulation and processing, YQXPOLYMER is a trusted supplier for industries including construction, marine, automotive, and chemical processing.
Our advantages:
✅ Comprehensive grade selection and customization
✅ ISO-certified manufacturing and consistent quality
✅ Technical expertise to support your design process
✅ Global logistics and reliable supply

📞 Learn More
Ready to incorporate CSM into your next project?
Our technical team is here to help you specify, test, and implement the ideal solution.
✅ Email: [email protected]
✅ Phone / WeChat: +86-135-4070-2776
✅ Website: www.yqxpolymer.com

From chemical-resistant seals to UV-stable membranes, YQXPOLYMER CSM empowers your designs to perform longer and safer. Contact us today to get started.