TECHNICALLY SPECIFIED RUBBER (TSR)
Above Infinity stands out in the sourcing of Technically Specified Rubber (TSR). Our commitment to quality control is unwavering. TSR grading is based on laboratory measurements, including Mooney viscosity and plasticity. Our dedicated quality control team ensures that TSR consistently meets these specifications. We source TSR from reputable suppliers who adhere to industry standards. Whether it’s automotive components or industrial hoses, our clients receive TSR that excels in thermal stability and resistance to oils and oxidizing agents. Our transparent sourcing practices and compliance with certifications provide assurance to buyers seeking reliable TSR.
SMR 20:
SMR20 represents a revolutionary change in the grading and presentation of natural rubber. Unlike conventional visual standards, SMR20 is graded based on technical specifications.
Quality: It’s known for very high-quality, clean latex grades of natural rubber.
Properties:
- Dirt content (max. on 40 mesh): 0.20%
- Ash content (max.): 1.00%
- Nitrogen content (max.): 0.60%
- Volatile matter (max.): 0.80%
- Wallace plasticity (Po, min.): 30
- Plasticity retention index (% min.): 40
- Lovibond Color (individual value, max.): 6.0
- Mooney Viscosity (ML, 1+4, 100°C): 55-6512.
SMR CV60:
SMR CV60 is another viscosity-controlled natural rubber, with a mooney viscosity of 66 +/- 6.
Advantages:
- Extremely price competitive.
- Similar specifications to SMR 10 but at a more cost-effective price.
- Excellent processability for one-pass mixing.
- Improved carbon black dispersion and lower mooney scorch.
Applications: Widely used in tire and automotive industries, as well as general molded and extruded rubber products.
SMR L:
SMR L is a very clean, light-colored rubber.
- Special Feature: To prevent enzyme darkening, 0.05% sodium metabisulfate is added during latex processing.
- Primary Use: Ideal for colored compounds, especially light or bright colors.
SMR 10:
- Block Rubber: SMR 10 is a high-quality block rubber grade.
- Usage: It’s widely used in the tire and automotive industry, as well as in general molded and extruded rubber products.
SMR 20:
- High Purity Block Rubber: SMR 20 represents very high-quality, clean latex grades of natural rubber.
- Applications: It’s one of the most valuable types of natural rubber globally, known for its organic nature and high elasticity.
SMR 10CV and SMR 20CV:
- Controlled Volatility Block Rubber: These grades have specific volatile matter content.
- Uses: They find applications in various rubber products, including industrial components.
SMR CV50 and SMR CV60:
- Centrifuged Latex: Obtained through centrifugation, these grades have varying dirt content.
- Applications: Used in gloves, automotive components, and other rubber goods.
SMR 5 and SMR GP:
- General Purpose Grades: These offer balanced physical properties.
- Common Uses: From industrial applications to consumer goods.
STR 5CV: A viscosity-controlled natural rubber grade with low dirt content. It is commonly used in the automotive sector, tire manufacturing, and industrial applications where consistent quality and ease of processing are critical.
STR 10: A block rubber grade known for its high tensile strength. It is widely used in tire manufacturing and industrial applications that require durable, high-performance rubber.
STR 20: A flexible rubber grade offering greater wear resistance and elasticity, STR 20 is used extensively in tire production and other mechanical applications.
STR XL: This extra-lightly smoked grade is used for high-precision rubber products like seals, gaskets, and other industrial components, offering excellent processability and uniformity.
STR 5L: A lightly smoked grade that balances smoke treatment with physical properties, STR 5L is used in conveyor belts, seals, and automotive components where durability and elasticity are important.
SVR CV60: A viscosity-controlled grade of rubber with lower dirt content. It’s widely used in high-performance applications such as tires and automotive components due to its excellent processability and consistent quality.
SVR CV50: Another viscosity-controlled grade with slightly higher dirt content than SVR CV60. It’s used in various industrial applications that demand stable performance and reliability.
SVR 3L: This high-quality grade features low dirt and ash content, making it ideal for manufacturing light-colored and technically demanding products. Its uniformity and stability make it a preferred choice for specialized applications.
SVR 10: Known for its higher tensile strength, SVR 10 is commonly used in tire production and other industrial applications that require durable, high-performance rubber.
SVR 20: A versatile rubber grade offering greater elasticity, making it suitable for automotive and mechanical products. It is widely used in tire manufacturing due to its excellent wear resistance.
SIR 3CV50: A viscosity-controlled grade with consistent properties, including Mooney viscosity and plasticity retention index. It is used in high-end industrial applications like tire production and automotive parts.
SIR 3CV60: This grade has lower dirt content compared to SIR 3CV50, making it ideal for more demanding applications in the automotive and industrial sectors.
SIR 5: A balanced grade offering excellent resistance to aging and widely used in general rubber products, including automotive components. Its low dirt content makes it suitable for high-precision applications.
SIR 10: Known for its balanced physical properties, SIR 10 is used in automotive and industrial components where higher tensile strength and durability are required.
SIR 20: A cost-effective rubber grade known for its excellent mechanical properties, SIR 20 is widely used in tire manufacturing and other rubber-based industries for its good elasticity and wear resistance.
CSR 10:
- Block Rubber: CSR 10, also known as block rubber, is graded based on precise technical parameters such as dirt content, ash content, nitrogen content, volatile matter, and properties like its Wallace Plasticity (PO) and Plasticity Retention Index (PRI).
- Usage: Widely employed by the tire industry, CSR 10 is made from cup lump (also known as field coagulum).
CSR L:
- High Purity Block Rubber: CSR L represents another block rubber grade derived from field latex.
- Purity and Applications: CSR L boasts higher purity and is more expensive. It finds its niche in high-end precision rubber products.