Grade D oil-resistant conveyor belts use NBR (acrylonitrile-butadiene rubber) compound covers that resist swelling, softening, and degradation when exposed to petroleum oils, animal fats, vegetable oils, and certain greases. Essential for food processing, oilfield material handling, and any application where standard rubber covers would rapidly deteriorate from oil contact.
| Parameter | Specification |
|---|---|
| Cover compound | NBR (nitrile rubber), medium-high ACN content |
| Oil resistance test | ASTM Oil No.3, 70°C, 70 hours: volume swell —?0% |
| Tensile strength | —?5 MPa (DIN 22102 Grade D) |
| Elongation at break | —?50% |
| Abrasion loss | —?50 mm³ (DIN 53516) |
| Temperature range | -20°C to +80°C continuous |
| Carcass | EP fabric (standard); ST cord on request |
| Belt widths | 300—?,800mm |
| Carcass ratings | EP200/3 —?EP500/4 |
| Top cover thickness | 4—?2mm |
| Standard compliance | DIN 22102 Grade D, ISO 22721 |
| FDA option | Food-grade NBR available for direct food contact |
| Fluid Type | Resistance |
|---|---|
| Petroleum oils (mineral) | Excellent —?primary design purpose |
| Animal fats (lard, tallow) | Excellent |
| Vegetable oils | Good |
| Diesel fuel, kerosene | Good |
| Hydraulic oil | Good to Excellent |
| Aromatic solvents (toluene) | Limited —?not recommended |
| Ketones (acetone, MEK) | Poor —?not suitable |
For direct food contact applications (FDA-regulated facilities), we supply food-grade NBR compound certified to FDA 21 CFR 177.2600. Available in white or light grey colour for easy contamination detection. MOQ: 200m. Specify "Food Grade" when requesting quotation.
Send us your conveyor dimensions, material type, and capacity. We will provide a detailed specification and competitive price within 24 hours.
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