High-performance cast polyurethane elastomer systems for industrial coating, printing and paper-mill rollers. Engineered for solvent & chemical resistance, stable surface hardness across the roller diameter and excellent abrasion resistance — delivering long-life, dimensionally stable roller covers for continuous-throughput production lines. Hardness and chemistry are tuned to your line via prepolymer + chain-extender formulation.
A60–D75
Hardness Shore
20–55
Tensile strength MPa
20–80
Abrasion loss mm³
±2
Hardness tolerance Shore A
−40~120
Operating temp °C
Key Features
Solvent & chemical resistance Withstands ink, coating and oil chemistry on printing and coating lines.
Stable surface hardness Consistent hardness across the roller diameter (Shore A ±2 tolerance).
Excellent abrasion resistance 20–80 mm³ wear loss for long roller-cover service life.
Hydrolysis resistance Polyether systems for humid pulp & paper-machine environments.
Low compression set < 25% under continuous loading for dimensional stability and concentricity.
Customizable formulation Hardness, chemistry and crowning tuned to your line. OEM/ODM supported.
Also used for: steel-mill pickup rollers (continuous +80 °C), sanding/brushing/finishing rollers and continuous-line guide rollers.
Technical Specifications
Property
Range
Test Method
Hardness
Shore A 60 – Shore D 75
ASTM D2240
Tensile strength
20–55 MPa
ASTM D412
Elongation at break
250–650%
ASTM D412
Abrasion resistance
20–80 mm³
DIN 53516
Rebound resilience
35–55%
ASTM D2632
Tear strength
60–120 kN/m
ASTM D624
Compression set
< 25% (70 °C / 22h)
ASTM D395
Operating temperature
−40 °C to +120 °C
ISO 9142
Parameters customizable by formulation design and application; typical values for reference, not a binding specification.
Casting Processes
Centrifugal Casting Preferred for roller covers — uniform density and wall thickness around the core.
Vacuum Casting Void-free covers for precision printing and coating rollers.
Open-Mold Casting For large-diameter or simple-geometry roller bodies.
Automated Casting Compatible with PU casting machines and automated metering/dispensing.
Packaging, Storage & Handling
Packaging Prepolymer and curative supplied in iron drums; palletised for export. Bulk on request.
Storage Store sealed in a cool, dry, ventilated area away from moisture. Shelf-life details on request.
Handling & Safety Avoid eye/skin contact; wear safety glasses. Wash skin with soap and water; flush eyes with water and seek medical attention. Full MSDS on request.
One-Stop PU Elastomer Solution
Beyond raw materials, BlendPolyol provides matched equipment and tooling — a complete production-line partner, not just a chemical supplier:
10+ years in PU raw materials Specialised PU elastomer & polyol manufacturer serving industry worldwide.
Custom formulation Hardness, chemistry and resistance tuned to your rollers and line.
Equipment integration Casting machines, mixing systems and moulds as a complete solution.
Global export & fast reply Export to EU, Latin America, Asia and beyond — we respond within 24 hours.
From Sample to Bulk Order
1. Share your spec Tell us roller type, hardness, chemistry exposure and temperature — we recommend a formula.
2. Sample & validate Trial-cast on your line; we fine-tune hardness and surface performance.
3. Scale to bulk Confirm the formula and order in bulk with flexible MOQ and tiered lead times.
Frequently Asked Questions
What hardness can you provide for roller covers?Shore A 60 up to Shore D 75, tuned via prepolymer NCO content and chain-extender ratio, with a tight Shore A ±2 tolerance across the diameter.
Polyether or polyester system?Polyether systems offer hydrolysis resistance for wet paper-mill environments; polyester systems offer higher mechanical strength and solvent resistance. We recommend based on your chemistry and environment.
Which casting process suits rollers?Centrifugal casting is preferred for uniform-density roller covers; vacuum casting gives void-free precision covers. We support both with matched equipment.
Can the formulation be customized?Yes. Hardness, chemistry resistance and processing characteristics are all customizable. OEM/ODM supported — request a TDS, MSDS and sample; we reply within 24 hours.
Need PU elastomer for your rollers?
Get a tailored formulation, full TDS & MSDS, and a sample for casting validation.
✓ Custom hardness & chemistry✓ TDS · MSDS · COA✓ Reply within 24 h
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