Grades and parameters by product line
VHHC supplies natural rubber and rubber seed oil of Vietnamese origin, and EVA resin listed by vinyl acetate content. Each grade has its own parameter table; select a grade to send an inquiry.
Natural rubber
Block rubber (SVR)
SVR 3L, SVR 10, SVR 20, SVR CV50 and SVR CV60 are technically specified block rubber from Vietnam, used in tyres, automotive parts and industrial belts.
Select a grade below to see its parameter table. Measured values for each lot are on that lot's COA.
Controlled parameters
- Dirt (retained on 45µm aperture) % (m/m)
- Ash % (m/m)
- Volatile matter % (m/m)
- Nitrogen % (m/m)
- Initial Wallace Plasticity (Po)
- PRI (P30/Po)x100%
SVR CV50 and SVR CV60 additionally control Mooney viscosity.
Grades
SVR 3L
SVR 3L, SVR 10, SVR 20, SVR CV50 and SVR CV60 are technically specified block rubber from Vietnam, used in tyres, automotive parts and industrial belts.
Specifications
| Parameter | Unit | Value |
|---|---|---|
| Dirt (retained on 45µm aperture) | % (m/m) | ≤ 0.03 |
| Ash | % (m/m) | ≤ 0.50 |
| Volatile matter | % (m/m) | ≤ 0.80 |
| Nitrogen | % (m/m) | ≤ 0.60 |
| Initial Wallace Plasticity (Po) | — | ≥ 35 |
| PRI (P30/Po)x100% | — | ≥ 60 |
| Lovibond Colour | — | ≤ 6 |
COA per lot, with measured values for SVR 3L · C/O per shipment · TDS on request
Send inquiry SVR 10View specsSVR 10
SVR 3L, SVR 10, SVR 20, SVR CV50 and SVR CV60 are technically specified block rubber from Vietnam, used in tyres, automotive parts and industrial belts.
Specifications
| Parameter | Unit | Value |
|---|---|---|
| Dirt (retained on 45µm aperture) | % (m/m) | ≤ 0.08 |
| Ash | % (m/m) | ≤ 0.60 |
| Volatile matter | % (m/m) | ≤ 0.80 |
| Nitrogen | % (m/m) | ≤ 0.60 |
| Initial Wallace Plasticity (Po) | — | ≥ 30 |
| PRI (P30/Po)x100% | — | ≥ 50 |
COA per lot, with measured values for SVR 10 · C/O per shipment · TDS on request
Send inquiry SVR 20View specsSVR 20
SVR 3L, SVR 10, SVR 20, SVR CV50 and SVR CV60 are technically specified block rubber from Vietnam, used in tyres, automotive parts and industrial belts.
Specifications
| Parameter | Unit | Value |
|---|---|---|
| Dirt (retained on 45µm aperture) | % (m/m) | ≤ 0.16 |
| Ash | % (m/m) | ≤ 0.80 |
| Volatile matter | % (m/m) | ≤ 0.80 |
| Nitrogen | % (m/m) | ≤ 0.60 |
| Initial Wallace Plasticity (Po) | — | ≥ 30 |
| PRI (P30/Po)x100% | — | ≥ 40 |
COA per lot, with measured values for SVR 20 · C/O per shipment · TDS on request
Send inquiry SVR CV50View specsSVR CV50
SVR 3L, SVR 10, SVR 20, SVR CV50 and SVR CV60 are technically specified block rubber from Vietnam, used in tyres, automotive parts and industrial belts.
Specifications
| Parameter | Unit | Value |
|---|---|---|
| Dirt (retained on 45µm aperture) | % (m/m) | ≤ 0.02 |
| Ash | % (m/m) | ≤ 0.40 |
| Volatile matter | % (m/m) | ≤ 0.80 |
| Nitrogen | % (m/m) | ≤ 0.60 |
| PRI (P30/Po)x100% | — | ≥ 60 |
| Mooney Viscosity ML(1'+4')100°C | — | 50 ± 5 |
COA per lot, with measured values for SVR CV50 · C/O per shipment · TDS on request
Send inquiry SVR CV60View specsSVR CV60
SVR 3L, SVR 10, SVR 20, SVR CV50 and SVR CV60 are technically specified block rubber from Vietnam, used in tyres, automotive parts and industrial belts.
Used in
Tyres, conveyor belts, automotive parts, hoses and seals.
Specifications
| Parameter | Unit | Value |
|---|---|---|
| Dirt (retained on 45µm aperture) | % (m/m) | ≤ 0.02 |
| Ash | % (m/m) | ≤ 0.40 |
| Volatile matter | % (m/m) | ≤ 0.80 |
| Nitrogen | % (m/m) | ≤ 0.60 |
| PRI (P30/Po)x100% | — | ≥ 60 |
| Mooney Viscosity ML(1'+4')100°C | — | 60 ± 5 |
COA per lot, with measured values for SVR CV60 · C/O per shipment · TDS on request
Send inquiryCOA per lot · C/O per shipment · TDS on request
Sheet rubber (RSS)
RSS 1 and RSS 3 are ribbed smoked sheet rubber, graded visually under the Green Book.
Controlled parameters
- Dirt (retained on 45µm aperture) % (m/m)
- Ash % (m/m)
- Volatile matter % (m/m)
- Nitrogen % (m/m)
- Initial Wallace Plasticity (Po)
- PRI (P30/Po)x100%
- Mooney Viscosity ML(1'+4')100°C
Graded visually under the Green Book. Values shown are from a sample test (RRIV, 09/2025).
Grades
RSS 3
RSS 1 and RSS 3 are ribbed smoked sheet rubber, graded visually under the Green Book.
Specifications
| Parameter | Unit | Value |
|---|---|---|
| Dirt (retained on 45µm aperture) | % (m/m) | 0.015 |
| Ash | % (m/m) | 0.26 |
| Volatile matter | % (m/m) | 0.40 |
| Nitrogen | % (m/m) | 0.35 |
| Initial Wallace Plasticity (Po) | — | 45.7 |
| PRI (P30/Po)x100% | — | 81 |
| Mooney Viscosity ML(1'+4')100°C | — | 82.4 |
RSS 1: parameters on request
Reference standard: Values for RSS 3 — sample test result, RRIV, September 2025, per TCVN 3769:2016. Not a specification.
COA per lot with measured values · C/O per shipment · TDS on request
Send inquiryCOA per lot · C/O per shipment · TDS on request
Latex concentrate
Centrifuged natural latex concentrate, specified by dry rubber content (DRC) and total solids content (TSC). Used in medical and industrial gloves, rubber thread, balloons, condoms and adhesives.
VHHC supplies latex concentrate in high ammonia (HA) and low ammonia (LA) types, by bulk tanker or flexibag.
Controlled parameters
- Total Solids Content % (m/m)
- Dry Rubber Content % (m/m)
- Alkalinity/Latex concentrate % (m/m)
- Mechanical Stability Time (MST) s
- Volatile Fatty Acid (VFA)
- KOH number
Grades
Latex HA
Centrifuged natural latex concentrate, specified by dry rubber content (DRC) and total solids content (TSC). Used in medical and industrial gloves, rubber thread, balloons, condoms and adhesives.
Used in
Medical and industrial gloves, rubber thread, balloons, condoms, adhesives.
Specifications
| Parameter | Unit | HA | LA |
|---|---|---|---|
| Total Solids Content | % (m/m) | ≥ 61.0 | ≥ 61.0 |
| Dry Rubber Content | % (m/m) | ≥ 60.0 | ≥ 60.0 |
| Non Rubber Solids | % (m/m) | ≤ 1.7 | ≤ 1.7 |
| Alkalinity/Latex concentrate | % (m/m) | ≥ 0.60 | ≤ 0.29 |
| Mechanical Stability Time (MST) | s | ≥ 650 | ≥ 650 |
| Coagulum content | % (m/m) | ≤ 0.03 | ≤ 0.03 |
| Copper content | mg/kg TSC | ≤ 8 | ≤ 8 |
| Manganese content | mg/kg TSC | ≤ 8 | ≤ 8 |
| Sludge content | % (m/m) | ≤ 0.10 | ≤ 0.10 |
| Volatile Fatty Acid (VFA) | — | ≤ 0.06 | ≤ 0.06 |
| KOH number | — | ≤ 0.70 | ≤ 0.70 |
Reference standard: HA and LA limits per TCVN 6314:2013 (ISO 2004:2010).
COA per lot with measured values · C/O per shipment · TDS on request
Send inquiry Latex LAView specsCOA per lot · C/O per shipment · TDS on request
Rubber seed oil (RSO)
Rubber seed oil (RSO) is a non-food industrial oil extracted from the seeds of the rubber tree. RSO has no standard grade codes; VHHC trades each lot on the parameters stated on its COA.
Fatty acid profile — one sample, SGS (not a specification)
- Linoleic acid38.5 %
- Linolenic acid18.8 %
- Oleic acid18.6 %
- Stearic acid9.9 %
- Palmitic acid8.8 %
- Unsaturated : saturated3.9 : 1
Grades
RSO
Rubber seed oil (RSO) is a non-food industrial oil extracted from the seeds of the rubber tree. RSO has no standard grade codes; VHHC trades each lot on the parameters stated on its COA.
Used in
Industrial oil; applications based on each customer's requirements.
Specifications
| Parameter | Unit | Value |
|---|---|---|
| Palmitic acid (C16:0) | % (m/m) | 8.79 |
| Stearic acid (C18:0) | % (m/m) | 9.88 |
| Oleic acid (C18:1) | % (m/m) | 18.56 |
| Linoleic acid (C18:2) | % (m/m) | 38.48 |
| Linolenic acid (C18:3) | % (m/m) | 18.75 |
| Unsaturated fatty acids (UFA) | % (m/m) | 76.26 |
| Saturated fatty acids (SFA) | % (m/m) | 19.38 |
| UFA : SFA | — | 3.93 |
Reference standard: Sample analysis: one sample, SGS Vietnam, method AOCS Ce 1b-89. Not a specification.
COA per lot, with measured values for RSO
Send inquiryCOA per lot
Plastic resin
EVA resin
We supply EVA (ethylene–vinyl acetate) copolymer resin in pellet form, grouped by vinyl acetate content: 18%, 26% and 28%.
Each grade keeps its manufacturer's name (Formosa, USI), and its parameters follow that grade's TDS.
Controlled parameters
- Vinyl acetate content (VA) % wt
- Melt flow index (MFI) g/10 min
- Density g/cm³
Grades
Formosa EVA 7350M
EVA copolymer resin in pellet form, 18% vinyl acetate (VA) content, manufactured by Formosa. Send an inquiry for the TDS, packing and a quote.
Used in
Foam, footwear, gaskets, sheet.
Specifications
| Parameter | Unit | Value |
|---|---|---|
| Vinyl acetate content (VA) | % wt | 18 |
| Melt flow index (MFI) at 190 °C, 2.16 kg | g/10 min | 2.5 |
| Density | g/cm³ | 0.938 |
Reference standard: Manufacturer TDS — typical values
TDS on request
Send inquiry USI EVA 629 View specsUSI EVA 629
EVA copolymer resin in pellet form, 18% vinyl acetate (VA) content, manufactured by USI. Send an inquiry for the TDS, packing and a quote.
Used in
Shoe sole foaming, food packaging, general compounding.
Specifications
| Parameter | Unit | Value |
|---|---|---|
| Vinyl acetate content (VA) | % wt | 18 |
| Melt flow index (MFI) at 190 °C, 2.16 kg | g/10 min | 2.5 |
| Density | g/cm³ | 0.939 |
Reference standard: Manufacturer TDS — typical values
TDS on request
Send inquiry Formosa EVA 7470M View specsFormosa EVA 7470M
EVA copolymer resin in pellet form, 26% vinyl acetate (VA) content, manufactured by Formosa. Send an inquiry for the TDS, packing and a quote.
Used in
Cross-linked foam footwear and midsoles, gaskets, polymer blends, wire and cable.
Specifications
| Parameter | Unit | Value |
|---|---|---|
| Vinyl acetate content (VA) | % wt | 26 |
| Melt flow index (MFI) at 190 °C, 2.16 kg | g/10 min | 7.5 |
| Density | g/cm³ | 0.948 |
Reference standard: Manufacturer TDS — typical values
TDS on request
Send inquiry USI EVA 634-04 View specsUSI EVA 634-04
EVA copolymer resin in pellet form, 28% vinyl acetate (VA) content, manufactured by USI. Send an inquiry for the TDS, packing and a quote.
Used in
Hot melt adhesives, shoe sole foaming, wire and cable compounds.
Specifications
| Parameter | Unit | Value |
|---|---|---|
| Vinyl acetate content (VA) | % wt | 28 |
| Melt flow index (MFI) at 190 °C, 2.16 kg | g/10 min | 6 |
| Density | g/cm³ | 0.948 |
Reference standard: Manufacturer TDS — typical values
TDS on request
Send inquiryTDS on request
Or email [email protected]
How an inquiry works
Select grades
Choose one or more grades in the inquiry form, then enter the quantity, Incoterm, destination and required delivery month. Select TDS or sample if needed.
Quote by email
We prepare the quote from the details in your inquiry.
Documents
Documents: COA per lot and C/O per shipment for natural rubber; COA per lot for RSO; TDS on request. The documents for each grade are listed on its page.