What Makes CSM-403 Special?
In the world of chlorosulfonated polyethylene (CSM), selecting the right grade is not simply about chlorine content or Mooney viscosity — it is about application balance.
CSM-403 is designed to sit at the intersection of:
- Processability
- Mechanical strength
- Chemical resistance
- Weather & ozone durability
- Broad compounding compatibility
This balance makes it one of the most versatile grades within the YQXPOLYMER CSM portfolio.
For compounders serving multiple industries — industrial hose, automotive cable, and sealing systems — CSM-403 reduces SKU complexity while maintaining high performance.
2️⃣ Core Technical Advantages of CSM-403
✔ Excellent Weather & Ozone Resistance
CSM inherently provides outstanding resistance to:
- UV radiation
- Ozone cracking
- Outdoor aging
This makes CSM-403 ideal for exposed hose covers and outdoor cable sheathing.
✔ Strong Chemical Resistance
CSM-403 demonstrates resistance to:
- Acids and alkalis
- Oxidizing chemicals
- Salt spray
- Many industrial fluids
It performs reliably in aggressive industrial environments.
✔ Balanced Mechanical Properties
Compared with softer or ultra-high chlorine CSM grades, CSM-403 offers:
- Good tensile strength
- Stable elongation at break
- Reliable tear resistance
- Consistent compression set performance
This balance is essential for gaskets and sealing systems.
✔ Excellent Flame Retardancy
Due to its chlorine structure, CSM offers inherent flame resistance characteristics when properly compounded, making it suitable for cable jacketing applications.
3️⃣ Application Breakdown: Why CSM-403 Works Across Industries
🔹 A. Industrial & Hydraulic Hose
Why CSM-403?
- Outer cover for hydraulic hoses
- Chemical transfer hose jacket
- High-pressure industrial hose cover
CSM-403 provides:
- Oil mist resistance
- Weather durability
- Abrasion stability
- Long outdoor service life
For hose manufacturers, it offers an optimal cost-performance balance compared with EPDM in chemically aggressive environments.
🔹 B. Cable & Wire Jacketing
Why CSM-403?
- Power cable outer jacket
- Marine cable sheath
- Industrial control cable
- Mining cable applications
CSM-403 provides:
- Ozone and UV resistance
- Flame-retardant formulation compatibility
- Stable dielectric properties
- Resistance to harsh environments
It is particularly suitable for heavy-duty and outdoor cable systems.
🔹 C. Gaskets & Sealing Systems
Why CSM-403?
- Chemical-resistant gaskets
- Outdoor sealing components
- Automotive sealing parts
- Industrial flange gaskets
CSM-403 delivers:
- Good compression set resistance
- Aging stability
- Resistance to oxidizing agents
- Reliable dimensional stability
For medium-to-high performance sealing applications, it offers durability without excessive cost.
4️⃣ Comparison Perspective: Why Not Use Different Grades for Each?
Many compounders ask:
Should hose, cable, and gasket use separate CSM grades?
Technically yes — but economically and operationally, not always.
CSM-403 offers:
- Reduced inventory complexity
- Simplified formulation development
- Broader supplier consolidation
- Stable global raw material sourcing
For manufacturers looking to standardize across product lines, CSM-403 becomes a strategic material.
5️⃣ Typical Properties (Reference Values)
(Representative data — final properties depend on compounding and processing conditions.)
| Property | Typical Range |
| Appearance | White powder |
| Mooney Viscosity (ML 1+4, 100°C) | Moderate |
| Chlorine Content | Medium-High |
| Heat Resistance | Excellent |
| Weather Resistance | Outstanding |
| Chemical Resistance | Excellent |
For detailed TDS, please contact YQXPOLYMER technical team.
6️⃣ Why Choose YQXPOLYMER for CSM-403?
YQXPOLYMER focuses on:
- Stable molecular weight control
- Consistent chlorine distribution
- Clean white powder processing
- Global industrial supply support
We support:
- Custom compounding advice
- Technical formulation guidance
- Export documentation (COA, MSDS, REACH compliance information upon request)
- OEM cooperation
Our CSM materials are designed for long-term reliability in demanding environments.
7️⃣ Compliance & Regulatory Notice
- Product specifications are provided for industrial reference purposes only.
- Performance depends on final compounding, curing system, and application environment.
- Customers are responsible for validating suitability in their specific end-use conditions.
- Regulatory compliance (such as REACH or RoHS) should be confirmed based on destination market requirements and latest declarations.
YQXPOLYMER does not make implied warranty claims beyond agreed technical documentation.
📩 Contact YQXPOLYMER
Email: [email protected]
Phone / WeChat: +86-135-4070-2776
Website: www.yqxpolymer.com
If you are developing hose compounds, cable sheathing materials, or chemical-resistant gasket formulations, contact us for sample support and technical consultation regarding CSM-403.
