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RSS 1 is a visually graded natural rubber sheet, also known as Ribbed Smoked Sheet Grade 1. Ngoc Chau Natural Rubber supplies RSS 1 rubber from Vietnam to international buyers. Grade acceptance is assessed by sheet appearance, cleanliness and visible defects. Learn more about RSS 1 quality, grading and packing options below.
RSS 1 Grade and Quality Assessment
RSS 1 is graded primarily by visual inspection of the ribbed smoked sheets. Buyers typically assess the sheets’ cleanliness, dryness, strength, colour, consistency and visible defects. This differs from technically specified block rubber grades such as SVR, which are evaluated against defined technical parameters.
Inspection and acceptance criteria should be agreed between the buyer and supplier for each order. Laboratory results can provide additional information, but the figures shown below apply only to the tested sample and should not be treated as guaranteed limits for every shipment.
RSS1 Test Results
The laboratory report lists the following test results for an RSS 1 rubber sample.
| PARAMETER | TEST RESULT | WHAT IT INDICATES |
|---|---|---|
| Dirt retained on 45 μm aperture | 0.014% m/m | Measures the dirt retained during the test. |
| Ash | 0.33% m/m | Measures the inorganic residue remaining after testing. |
| Volatile matter | 0.27% m/m | Measures the volatile matter in the sample. |
| Nitrogen | 0.37% m/m | Measures the nitrogen content of the sample. |
| Initial Wallace Plasticity (Po) | 48.2 | Indicates the sample’s initial plasticity under the test conditions. |
| PRI | 85 | Indicates how well the sample retains plasticity after the specified accelerated ageing test. |
| Mooney Viscosity ML (1′+4′), 100°C | 82.5 | Indicates the sample’s viscosity under the specified test conditions. |
These results are for the tested sample and are provided for reference. They do not represent guaranteed results for every RSS1 shipment. Please confirm the applicable batch COA and acceptance requirements for each order.
RSS 1 packing options
The provided packing information lists 33.33 kg and 35 kg per bale, with loose-bale and palletized packing options. Reference pallet loading is shown below; final quantities must be checked against the actual packing plan, container and route.
| Bale weight | Loose bales | Palletized bales |
|---|---|---|
| 33.33 kg | Approx. 600–630 bales/container; 20–21 MT | 36 bales/pallet × 16 pallets = 576 bales; approx. 19.2 MT/container |
| 35 kg | Approx. 600–630 bales/container; 21–22.05 MT | 36 bales/pallet × 16 pallets = 576 bales; approx. 20.16 MT/container |
Final container loading, bale count, wrapping material and any special packing requirements should be confirmed for each shipment.
Typical applications
RSS 1 natural rubber sheet may be considered for natural rubber compounds used in:
- Tires and tire components
- Conveyor belts and industrial hoses
- Molded industrial rubber parts
- Seals, mounts and vibration-control components
The suitable grade depends on the buyer’s compound design, processing conditions and finished-product requirements. Buyers should confirm suitability with their technical or compounding team.
Documents and order review
Before confirming an order, buyers should agree on the required quality basis and shipment documents. Depending on the order, request or confirm:
- Product specification or technical data sheet
- Batch COA, if available for the shipment
- Visual inspection and acceptance criteria
- Packing details and bale markings
- Container loading information
- Required export and shipping documents
Document availability and inspection arrangements must be confirmed for the specific order.
Source RSS 1 from Vietnam
Ngoc Chau Natural Rubber can review enquiries from buyers looking to source RSS 1 natural rubber from Vietnam. To assess your requirement and prepare a quotation, please share:
- Required quantity and purchasing frequency
- Destination port and preferred Incoterm
- Bale weight and loose-bale or pallet preference
- Required visual grading criteria or buyer specification
- COA, inspection and document requirements
Origin, product availability, final packing, shipment quantity, lead time, payment terms and Incoterms should be confirmed against the specific order.
FAQ
How is RSS 1 graded?
RSS 1 is primarily classified through visual inspection of the sheets. Buyers should agree on the applicable grading standard and acceptance criteria before shipment.
Are the laboratory values above guaranteed for every RSS 1 shipment?
No. The listed values are results for the sample shown in the supplied laboratory report. Request the applicable batch COA and confirm required limits for the order.
What bale weights are available?
The provided information lists 33.33 kg and 35 kg bales. Availability should be confirmed for the order.
Can RSS 1 be shipped on pallets?
Palletized packing is listed as an option. The reference configuration is 36 bales per pallet and 16 pallets per 20ft DC, subject to final loading confirmation.
What should I include in a quotation request?
Please include quantity, destination port, packing preference, quality criteria and required documents.
Request an RSS 1 quotation
For an RSS 1 natural rubber quotation, send us your quantity, destination port, preferred packing and quality/document requirements. We will review the details and confirm the applicable supply and shipment information.
Hotline / WhatsApp: +84 762 798 888
Email: info@ngocchausupplier.com


















Ms Evan