Oil Resistant Conveyor Belt
Oil Resistant Rubber Conveyor Belt
A cotton, nylon, or polyester canvas-core belt with an NBR (nitrile butadiene rubber) blended cover, calendered, formed, and vulcanized for conveying oil-bearing materials and handling occasional contact with oils and chemical solvents — conditions that swell and break down a standard rubber cover._1788747852_WNo_800d800.jpg)
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Why oil is harder on a belt than it looks
Ordinary conveyor belt rubber has poor tolerance for oils and organic solvents. Contact causes the cover to swell and erode: the surface colloid breaks down, the rubber structure loosens, physical and mechanical properties drop, and service life shortens well ahead of a normal wear-based replacement schedule. This shows up gradually — a belt that looks fine at installation can be visibly degraded within months of steady oil exposure. This belt solves that with a cover built on nitrile butadiene rubber (NBR) carrying a high acrylonitrile content, the compound family with the best resistance to oil and organic solvents available in conveyor cover rubber. The canvas, nylon, or polyester strength layer underneath is selected per order to match your tensile and reinforcement requirements, so the oil-resistant cover isn't tied to one fixed carcass spec.- Cover compoundNBR (nitrile butadiene rubber), high acrylonitrile
- Carcass optionsCotton, nylon, or polyester canvas
- ProcessCalendering, forming, vulcanization
- Volume swell rateLow, under oil contact
- Typical dutyOil-bearing material, solvent contact environments
- ReinforcementSelected per customer's order
Three grades, matched to oil exposure and duty level
All three share the same NBR-blended cover family; the difference is tensile rating, abrasion tolerance, and working temperature range.OR — Standard
15 MPa tensile, 150mm³ max abrasion loss, −30°C to +60°C. The default spec for general oil-bearing material handling.
MOR — Medium duty
12 MPa tensile, higher abrasion allowance (300mm³), −30°C to +50°C. A more economical option where oil contact is lighter or intermittent.
OHR — High elongation / hot lump
15 MPa tensile, 400% elongation at break, rated for hot lump material up to +100°C — for oily material discharged while still warm.
Full grade specification
Complete physical properties across the three oil-resistant grades, for direct comparison when specifying.| Grade | Tensile Strength (MPa) | Elongation at Break (min %) | Max Abrasion Loss (mm³) | Polymer Rubber | Working Temperature |
|---|---|---|---|---|---|
| OR | 15 | 300% | 150 | NBR blended | −30°C to +60°C |
| MOR | 12 | 300% | 300 | NBR blended | −30°C to +50°C |
| OHR | 15 | 400% | 180 | NBR blended | Up to +100°C (hot lump material) |
Built for buyers handling oil-bearing material or solvent contact
If your current belt cover is swelling, softening, or wearing out faster than the rated service life, oil or solvent exposure is the most common cause — this is the category to re-spec against.- Oil refinery & petrochemical bulk transfer
- Oilseed pressing & edible oil processing
- Asphalt & bitumen batch plants
- Foundry sand with oil-based binders
- Rubber & plastics recycling lines
- Oil sands & oil-shale mining operations
- Chemical plant solvent-contact transfer
- Machine shop & metalworking swarf handling
- Rendering & animal fat by-product lines
- Automotive parts & lubricant-contact manufacturing
Common questions
What's the practical difference between OR, MOR, and OHR?
OR is the standard general-purpose oil resistant grade. MOR trades tensile strength and abrasion resistance for lower cost, suited to lighter oil contact. OHR is built for oily material that's also hot at the discharge point, with higher elongation and a rating up to +100°C for lump material.
Why is NBR the standard compound for oil resistance?
Nitrile butadiene rubber with a high acrylonitrile content resists swelling and erosion from oils and organic solvents far better than natural rubber or general-purpose synthetic covers, which is why it's the base compound across all three grades here.
Can I choose the canvas core material?
Yes — cotton, nylon, or polyester canvas reinforcement is selected per order based on your tensile and splice requirements; the oil-resistant cover isn't tied to one fixed carcass.
Does oil resistance also cover chemical solvent contact?
Yes, the same NBR-blended cover family is rated for both oil-bearing materials and general organic solvent contact, though very aggressive or unusual solvents should be confirmed against your specific chemical before final selection.
What information do you need to quote an oil resistant belt?
The oil or solvent type and how continuous the contact is, material temperature at the point of contact, belt width, canvas core preference, and conveyor length.
