Natural rubber (NR/SBR) sheets are the most widely used rubber sheeting in industrial flooring, gasketing, lining, and impact applications, mainly because they combine high resilience and abrasion resistance at a lower cost than most synthetic alternatives. But “natural rubber sheet” is not one product. Duratuf alone manufactures 14 natural rubber grades across three performance tiers, and the right one for your application depends on hardness, tensile strength, elongation, and operating temperature, not just the word “natural” on a datasheet.
This guide breaks down every NR/SBR grade we manufacture, where each one fits, and what to check before placing a bulk order.
Natural Rubber Sheet Grades: Full Specification Comparison
All figures below show the specified minimum alongside the observed (tested) value, so you can see the actual margin our production maintains over spec.
General Purpose Grade (DuraGen Series)
Best for industrial flooring, matting, and general-purpose gasketing where cost efficiency matters more than extreme mechanical stress.
| Grade | Hardness (Shore A) | Tensile Strength (Spec / Observed) | Elongation at Break (Spec / Observed) | Temperature Range |
| DuraGen70 Lite | 70° ±5 | 2.0 / 2.3 MPa | 150% / 170% | -10°C to +60°C |
| DuraGen55 X | 55° ±5 | 3.0 / 3.5 MPa | 200% / 235% | -20°C to +70°C |
| DuraGen70 X | 70° ±5 | 3.0 / 3.6 MPa | 200% / 230% | -20°C to +70°C |
| DuraGen75 X | 75° ±5 | 3.5 / 3.9 MPa | 200% / 240% | -20°C to +70°C |
Impact & Standard Grade (DuraBlast Series)
Best for conveyor skirting, chute lining, and equipment padding where sheets absorb repeated mechanical impact.
| Grade | Hardness (Shore A) | Tensile Strength (Spec / Observed) | Elongation at Break (Spec / Observed) | Temperature Range |
| DuraBlast45 Pro | 45° ±5 | 5.0 / 5.9 MPa | 250% / 290% | -20°C to +70°C |
| DuraBlast55 Pro | 55° ±5 | 5.0 / 5.5 MPa | 250% / 287% | -20°C to +70°C |
| DuraBlast65 Pro | 65° ±5 | 5.0 / 5.2 MPa | 250% / 285% | -20°C to +70°C |
| DuraBlast45 Max | 45° ±5 | 10.0 / 10.5 MPa | 350% / 381% | -20°C to +70°C |
| DuraBlast65 Max | 65° ±5 | 10.0 / 10.5 MPa | 350% / 381% | -20°C to +70°C |
Abrasion & Premium Grade (Abra Series)
Best for high-wear, high-impact environments such as shot-blasting cabinets, mining chutes, and heavy material handling, where downtime from sheet failure is the real cost, not the sheet price.
| Grade | Hardness (Shore A) | Tensile Strength (Spec / Observed) | Elongation at Break (Spec / Observed) | Temperature Range |
| Abra40 Pro | 40° ±5 | 15.0 / 15.8 MPa | 600% / 627% | -30°C to +70°C |
| Abra60 Pro | 60° ±5 | 15.0 / 15.6 MPa | 450% / 493% | -30°C to +70°C |
| Abra40 Max | 40° ±5 | 20.0 / 20.7 MPa | 750% / 783% | -30°C to +70°C |
| Abra60 Max | 60° ±5 | 20.0 / 20.8 MPa | 500% / 550% | -30°C to +70°C |
| Abra38 Max | 38° ±5 | 24.0 / 24.6 MPa | 800% / 810% | -30°C to +70°C |
All grades are supplied in standard 10m x 1.2m rolls, thickness 2mm to 12mm as standard and up to 60mm on custom order. Custom width up to 2,500mm, length up to 20m, and finish options of plain, textured, fine ribbed, or mixed on request.
When Natural Rubber is Not the Right Choice
Natural rubber’s biggest strength, excellent resilience and abrasion resistance, comes with a trade-off: it performs poorly against oils, fuels, concentrated chemicals, and prolonged UV or ozone exposure. If your application involves any of the following, a different polymer will outlast NR by a wide margin:
- Oil, fuel, or grease contact: choose Nitrile (NBR) rubber sheets instead.
- Continuous outdoor exposure, ozone, or steam: choose EPDM rubber sheets instead.
- Balanced oil and weather resistance with flame retardance: choose Chloroprene (Neoprene) rubber sheets instead.
- Strong acids or oxidising chemicals: choose Chlorosulfonated (Hypalon) rubber sheets instead.
If your application sits purely on abrasion, impact, and mechanical wear without chemical or oil exposure, natural rubber remains the strongest and most cost-effective choice in our range.
Purchase Checklist for Bulk Buyers
Once you’ve shortlisted the right grade, verify these before placing a bulk order:
- Samples: request A4 or A6 samples (available free of cost, courier charges at actuals) to test the specification independently before committing to volume.
- Batch consistency: ask for test certificates for each production batch, not just the master datasheet. Specifications should hold across your full order, not just the sample piece.
- Thickness and dimensions: confirm exact thickness, width, and length against your application. A mismatch here is the single most common cause of application failure.
- Customisation: confirm your supplier can adjust thickness, dimensions, and colour for your order rather than forcing you into standard stock sizes.
- Warranty: Duratuf grades carry warranty tiers from nil (Lite) up to 24 months (Max) from invoice date against manufacturing defects. Confirm which tier applies to your chosen grade before ordering.
- Inventory and lead time: standard grades ship in 2 to 4 working days; custom thickness in 3 to 7 working days. For large orders, confirm stock availability upfront to avoid delays.
- Shipping terms: Duratuf ships LCL and FCL (20ft/40ft) under FOB, CIF, CFR, or Ex-Works terms, with moisture-resistant HDPE wrapping for sea transit.
Why Bulk Buyers Choose Duratuf
Duratuf has manufactured rubber sheets and electrical insulating mats for 16+ years, supplying 4,142+ customers across 12,825+ projects in 65+ countries, with over 3 million sq.m of rubber sheet delivered to date. Our manufacturing is certified to ISO 9001:2015 (Quality Management), ISO 45001:2018 (Occupational Health & Safety), and ISO 14001:2015 (Environmental Management), with REACH, RoHS 3, CE, and FDA compliance available where applicable.
