🧪 Rubber Process Oil (RPO) – The Backbone of Rubber Manufacturing

At Westinol (WE Co.), we supply high-quality Rubber Process Oils (RPO) designed to improve processability, flexibility, and performance of rubber and polymer compounds.
Our Light RPO and Heavy RPO grades are formulated under strict ASTM standards (D-445, D-92, D-1298), ensuring consistent viscosity, low sulfur content, and superior dispersion properties for industrial applications.

RPO is an essential component in rubber compounding, tire production, and polymer blending, providing the right balance of softness, durability, and processing efficiency.

🔹 Heavy Rubber Process Oil (H-RPO)

Heavy Rubber Process Oil is a high-viscosity, aromatic-rich oil used in applications requiring excellent solvency and flexibility.
It enhances filler dispersion and improves the elasticity of rubber products, making it ideal for:

• Tire and tube manufacturing (especially truck & heavy-duty tires)
• Conveyor belts and industrial hoses
• Automotive parts and molded rubber components

Technical highlights:

• Viscosity @100°C: 40–60 cSt
• Flash Point: 265–300°C
• Aniline Point: 50–65°C

👉 Explore Heavy Rubber Process Oil ›

🔹 Light Rubber Process Oil (L-RPO)

Light Rubber Process Oil is a low-viscosity paraffinic oil that ensures smooth mixing, easy extrusion, and excellent color stability in rubber products.
It is commonly used in:

• Footwear and latex rubber production
• Synthetic rubber processing
• Automotive seals and gaskets

Technical highlights:

• Viscosity @100°C: ~10 cSt
• Flash Point: ~215°C
• Excellent oxidation resistance

👉 View Light Rubber Process Oil Details ›

⚙️ Why Choose Westinol RPO?

• ✅ Consistent quality & reliable performance – tested under ASTM and SGS inspection
• ✅ Customized viscosity and flash point grades available
• ✅ Flexible packaging: bulk, new steel drum, or flexitank
• ✅ Cost-effective solutions for rubber and tire manufacturers
• ✅ On-time global delivery with full documentation (COA, MSDS)

We understand that manufacturers need oils that not only perform well in lab conditions but also maintain batch-to-batch consistency in mass production.
Westinol’s RPO grades are designed to ensure uniform mixing, reduced scorch time, and enhanced mechanical properties in finished rubber goods.

🌍 Applications of RPO

Our Rubber Process Oils are widely used across industrial and commercial sectors:

• Tire & tube manufacturing (automotive, agricultural, defense)
• Conveyor belts, rubber mats, and molded components
• Footwear, rubber sheeting, and hoses
• Polymer compounding and synthetic elastomers

📞 Need Expert Help Selecting the Right RPO Grade?

Our technical specialists can help you choose the best Light or Heavy RPO based on your rubber formulation, hardness requirement, and production process.

👉 Contact Us ›