SVR CV40 (TSR CV40) Natural Rubber
Constant-viscosity natural rubber (Mooney 40 ±5), manufactured in Vietnam. EUDR-aligned supply available for processing-stable, cost-optimized applications.
Product: SVR CV40 with Constant Viscosity (40±5) | EUDR Compliant
Status: 
In Stock & Ready to Ship
| Grade | Reference SVR CV60 Price (FOB) | Valid Until |
| SVR CV40 | From $1,960 USD / MT* | 25/01/2026 |
*Note: Indicative price based on current market. Subject to volume available and APT’s final confirmation.
- 6-Month Guarantee on stable Mooney viscosity stability
- Direct sourcing from manufacturer
- Flexible Ordering for trial quantity and samples
Common Questions about SVR CV40
What is the standard Mooney range of SVR CV40?
The typical specification is Mooney viscosity 40 ± 5, measured according to applicable testing standards.
Is EUDR-aligned SVR CV40 available?
Yes. EUDR-aligned supply can be arranged upon request, subject to plantation traceability, documentation scope, and shipment planning.
When should SVR CV40 be used instead of CV grades with higher Mooney?
SVR CV40 is preferred when:
- Fast and easy mixing is required
- Energy efficiency is a priority
- High-precision viscosity control is not critical
- Cost optimization is important for high-volume production
Is SVR CV40 supplied directly by the manufacturer?
Yes. SVR CV40 is manufactured and supplied directly by APT Rubber, ensuring consistent quality, traceability, and supply reliability.
Is the 6-month stability a guarantee?
The 6-month stability is a performance reference, not an unconditional guarantee. Viscosity behavior is supported when the material is stored and handled under recommended conditions. Final performance should be validated by the customer based on their storage, logistics, and processing environment.
Packaging & Shipping DAta
APT Rubber offers flexible packing solutions for our natural rubber products to meet diverse international shipping requirements. We provide standard 33.33kg and 35kg bales, wrapped in either Thin PE (dispersible) or Thick PE (strippable) film based on your processing needs.
Customers can choose between Loose Bale packing for maximum tonnage or Pallets for easier unloading. Our standard 20ft container load capacity ranges from 19.2 Metric Tons (MT) to 21 Metric Tons (MT).
| Specification | Details |
| Bale Weight | 33.33 kg or 35 kg |
| Bale Wrapping (PE) | Thin PE (Dispersible) or Thick PE (Strippable) |
| Packing Methods | Loose Bales (Floor Loaded) or Pallets |
| Container Capacity (20ft) | Pallet: 19.20 MT – 20.16 MT / Loose Bales: 21 MT |
Stabilize Your Production with Premium SVR CV40
Don’t let viscosity variation disrupt your mixing and forming process. APT Rubber produces SVR CV40 (Constant Viscosity) for manufacturers that require moderate Mooney control, smoother processability, and cost efficiency in stable production environments.
Unlike standard SVR (TSR) grades, SVR CV40 is produced under controlled viscosity conditions, using industry-standard stabilization practices to manage storage hardening.
The target specification is Mooney viscosity 40 ± 5, designed for applications where lower base viscosity and easier flow are preferred. Final suitability should be confirmed through customer trials.
Why Manufacturers Select SVR CV40 from APT Rubber
Controlled Viscosity Specification
SVR CV40 is produced to a defined Mooney range (40 ± 5), reducing batch-to-batch variability compared with non-CV grades.Process-Friendly Viscosity Stability
Manufactured under controlled processing parameters to support stable viscosity over typical commercial storage periods, subject to proper handling and storage.Optimized for Easy Processing Lines
Selected where lower viscosity, faster mixing, and reduced energy consumption are required, without the need for high-Mooney CV grades such as CV50 or CV60.EUDR-Aligned Supply Available
Traceability and due-diligence documentation can be provided upon request, depending on shipment scope and destination requirements.Established Manufacturing Experience
Operating since 1998, APT Rubber has long-term experience in SVR and constant-viscosity rubber production.Direct Factory Supply
Supplied directly from Vietnam manufacturing facilities, eliminating unnecessary trading layers and improving supply transparency.
- 2 FACTORIES
Located in Dong Nai and Quang Ngai Province, Vietnam
- 40,000 MT/YEAR
Wet latex line – 20,000 MT
Cup lump line – 20,000 MT
- QUALITY
TCVN 3769:2016
ISO 19001:2015
- GREEN
ISO 14001:2015
EUDR Compliance
Technical Data (TCVN 3769:2016)
Our SVR CV40 is rigorously tested to meet or exceed national standards.
| Parameter | Limit | APT Rubber Result |
| Mooney Viscosity (ML 1+4, 100°C) | 40 ± 5 | Strictly Controlled |
| Dirt Content (max % wt) | 0.02 | ≤ 0.02% (High Purity) |
| Ash Content (max % wt) | 0.50 | ≤ 0.50% |
| Nitrogen Content (max % wt) | 0.60 | ≤ 0.60% |
| Volatile Matter (max % wt) | 0.80 | ≤ 0.80% |
| Plasticity Retention (PRI) (min) | 60 | > 60 |
| Lovibond Color | – | Yellow |
Evaluate the best grade for your technical and cost targets
💡 Customization Note: While strictly adhering to TCVN 3769:2016, we offer custom blending services to adjust finished product parameters to your specific manufacturing requirements. Contact us to discuss your technical profile.
Our Quality Control Process
From the rubber farm to the final bale, we monitor 5 critical control points to support our 6-Month Viscosity Stability commitment under normal commercial storage conditions. This grade is manufactured in our owned Vietnam natural rubber manufacturing facilities under ISO-aligned quality systems.
Latex Reception Control
Incoming latex is evaluated for DRC and ammonia content to ensure stable processing conditions and consistent downstream behavior.Viscosity Control & Stabilization
Controlled dosing of industry-standard stabilizing agents is applied to manage viscosity behavior and mitigate storage hardening, in accordance with internal SVR CV procedures.Mechanical Processing & Cleaning
Crumbing and multi-stage washing are conducted to remove contaminants, with dirt content controlled within applicable SVR specifications.Drying & Plasticity Management
Drying temperature and residence time are regulated to preserve rubber properties, including plasticity retention (PRI ≥ 60).Laboratory Verification Prior to Packing
Mooney viscosity testing is performed at batch level prior to packing to verify alignment with the SVR CV40 target specification (40 ± 5) before shipment.
This quality control framework is designed to support viscosity stability during normal commercial storage and transportation, subject to proper handling and storage conditions.
Our natural rubber processing production line is supplied and maintained periodically by Quang Trung Mechanical Co., Ltd., a reputable company in the mechanical industry, manufacturing production lines, laboratory equipments and waste water treatment systems in Vietnam rubber industry.
Audited under ISO 9001 & ISO 14001 systems
APPLICATIONS
With a controlled Mooney viscosity of 40 ± 5, SVR CV40 is selected where ease of processing, smooth flow behavior, and cost efficiency are prioritized over high compound stiffness or very tight rheology control.
It is typically used in general industrial and molded rubber applications, where stable processing and throughput optimization are more important than high base viscosity.
👉Explore Related SVR Grades
Constant Viscosity (50±5). A softer alternative to CV60, offering excellent flow and reduced energy consumption during mixing.
EUDR Compliant.
Light-colored, high-purity rubber with low dirt content (0.03%). The industry standard for adhesives, medical parts, and colored products.
✅ EUDR Compliant.
