High-performance cast polyurethane elastomer systems for solid automotive parts — suspension and body-mount bushings, engine / transmission isolators, coupling spiders, exhaust hangers and stamping-die tooling. Solid (non-foam) cast PU delivers OE-grade fatigue life, high load capacity and stable damping from −40 °C to +120 °C. Hardness and chemistry tuned to your load, stiffness and fluid environment.
A60–D75
Hardness Shore
20–55
Tensile MPa
< 25%
Compression set (70 °C / 22h)
20–80
Abrasion mm³ DIN
−40~120
Service temp °C
Key Features
High load capacity Solid cast PU carries far higher static and dynamic loads than rubber at the same size.
Tunable stiffness & damping Hardness from Shore A60 to D75 lets you dial in ride stiffness vs. NVH isolation.
Long fatigue life Excellent resistance to dynamic flex and abrasion for suspension and drivetrain duty.
Oil & ozone resistant Polyester systems resist oil, fuel and ozone better than natural rubber.
Low compression set < 25% at 70 °C / 22h keeps clamp force and geometry stable over life.
Customizable formulation Hardness, color and chemistry tuned to your part and load case. OEM/ODM.
Also produced from the same systems: control-arm & sway-bar bushings, body / cab mounts, engine & transmission silent blocks, exhaust hangers, steering-rack mounts, PU die springs and stamping-die forming / stripper pads.
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
Rebound resilience
35–55%
ASTM D2632
Tear strength
60–120 kN/m
ASTM D624
Abrasion resistance
20–80 mm³
DIN 53516
Compression set
< 25% (70 °C / 22h)
ASTM D395
Operating temperature
−40 °C to +120 °C continuous
ISO 9142
Parameters customizable by formulation; typical values for reference, not a binding specification.
Casting Processes
Open-Mold Casting For larger parts and simple geometries such as pads and blocks.
Centrifugal Casting Void-free cylindrical blanks for bushings and sleeves.
Vacuum Casting Precision, void-free parts for high-load isolators.
Automated Casting Compatible with PU casting machines and automated 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, stiffness and chemistry tuned to your part and load case.
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 part Tell us the part, load, stiffness target and environment — we recommend a system.
2. Sample & validate Trial-cast parts; we fine-tune hardness, damping and chemistry resistance.
3. Scale to bulk Confirm the formula and order in bulk with flexible MOQ and tiered lead times.
Frequently Asked Questions
Why cast PU instead of rubber for bushings?Solid cast PU carries higher loads, resists abrasion, oil and ozone better, and lets you tune stiffness precisely — so it lasts longer and sharpens handling versus standard rubber.
Can you match our material specification?Yes. Share your hardness, stiffness and test requirements (or a sample part) and we tune the formulation and provide test data to match it.
What documentation do you provide?We supply TDS, MSDS and a per-batch COA with our raw-material systems. Additional documentation can be discussed per project.
Do you supply raw material or finished parts?Our core product is the PU elastomer raw-material system; we also offer matched casting machines and moulds so you can produce the parts in-house. We reply within 24 hours.
Need PU elastomer for automotive parts?
Get a tailored formulation, full TDS & MSDS, and a sample for casting validation.
✓ Tunable hardness A60–D75✓ TDS · MSDS · COA✓ Reply within 24 h
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