High Performance Hot-Cast Elastomers for Demanding Industrial Applications
Hot-Cast Elastomers for Precision, Strength, and Long-Cycle Reliability
UrePac® Hot-Cast elastomers are formulated for components that operate under heavy loads, abrasive contact, and continuous mechanical stress. Built using TDI prepolymers with matched curatives, these systems deliver the mechanical strength, toughness, and resilience required across mining, industrial processing, and high-load manufacturing.
Processed through heated tooling and controlled temperature conditions, UrePac® Hot-Cast systems achieve stable mechanical properties, dimensional consistency, and extended service life — even in aggressive slurry environments and high-impact applications.
Our portfolio spans four specialised chemistry platforms, each designed to suit different performance profiles for applications including drive wheels, scraper blades, flotation components, and precision custom moulded parts.
Key Features of UrePac® Hot-Cast Systems
UrePac® Hot-Cast elastomers are engineered for consistent, predictable processing and long-term performance across complex shapes and heavy-duty components.
Key features include:
Stable and repeatable processing under elevated temperature conditions
High load-bearing capability for wheels, drive elements, and heavy-force components
Strong dynamic fatigue resistance for parts exposed to continuous motion or vibration
Consistent dimensional accuracy across small to large-scale moulded components
Customisable mechanical properties tailored to specific application requirements
Broad chemistry choice — polyether, polyester, PCL, and PPG platforms
Long operational lifespan in high-demand industrial environments
TDI / PTMEG (Polyether) Systems
High-resilience polyether systems for dynamic environments.
Excellent hydrolysis resistance
Superior rebound and resilience
Ideal for slurry pumps, de-watering pump linings, and dynamic mining applications
Outstanding tear and abrasion resistance
Suitable for wet or moisture-prone operating conditions
Typical Applications: pump linings, mining equipment components, dynamic wear parts.
TDI / Polyester Systems
High-strength polyester systems for abrasion and cut resistance.
Exceptional toughness under sharp, abrasive contact
High tear strength
Ideal for equipment that requires cut resistance and surface durability
Stable performance in dry and high-impact environments
Typical Applications: screen decks, scraper blades, chute linings, wear surfaces.
TDI / Polycaprolactone Systems
Premium performance systems for the most demanding loads.
Excellent mechanical strength and low permanent set
High load-bearing capability
Exceptional cut, tear, and abrasion resistance
Best suited for heavily loaded wheels and high-precision mining parts
Typical Applications: trommel drive wheels, high-load caster wheels, high-impact components.
TDI / PPG (POP-Based) Systems
Cost-effective systems for medium-performance parts.
Balanced mechanical properties
Good tear strength and abrasion performance
Cost-effective alternative for general industrial components
Suitable for non-critical medium-load parts
Typical Applications: general industrial moulded components, medium-duty parts.
Bonding Agent – Lorechem ThinkBond® 40T
ThinkBond® 40T is a one-component polyurethane bonding agent designed for cast elastomer and industrial polyurethane applications. Developed to deliver strong and reliable adhesion, it supports consistent processing performance across a wide range of polyurethane systems.
Suitable for bonded polyurethane components, ThinkBond® 40T is commonly used in rollers, wheels, industrial linings, and other cast polyurethane manufacturing applications requiring durable bond strength and repeatable production outcomes.
Key Features
- One-component bonding agent
- Suitable for cast polyurethane systems
- Durable adhesion performance
- Consistent processing results
- Suitable for industrial polyurethane applications
Bonding Agent – Lorechem ThinkBond® 45T
ThinkBond® 45T is a high-performance one-component bonding agent formulated for demanding polyurethane casting applications. Designed to support strong substrate adhesion and stable processing performance, it is suitable for bonded polyurethane components used in industrial manufacturing environments.
Commonly used in cast elastomer production, ThinkBond® 45T is suitable for bonded polyurethane components requiring reliable adhesion strength, process consistency, and long-term durability under industrial operating conditions.
Key Features
- One-component bonding agent
- Compatible with CPU, MPU, and TPU systems
- Durable adhesion performance
- Consistent processing results
- Suitable for industrial polyurethane applications
Industries We Serve
Typical Hot-Cast Applications
UrePac® Hot-Cast systems are widely used across industries requiring long-cycle durability, extreme abrasion resistance, and reliable performance under mechanical load.
Mining & Resources
– Flotation parts, pump and de-watering linings, screen decks, scraper blades, chute linings, trommel drive wheels, wear plates and slurry components
Manufacturing & Industrial
– Guide rails, gears and sprockets, conveyor components, high-load caster wheels, drive wheels, grommets, general high-abrasion components
General Fabrication Components
– Pneumatic seals, seal inserts, tooling inserts, bushings, small industrial wear parts, custom moulded components, grommets
Packaging Industry
– Cutting pads, box-cutter backing pads, touching pads, precision wear components in carton production
UrePac® Hot Cast Products – PTMEG Grades
TDI/PTMEG/80A
Application: Hand Pour or Machine Dispensed
Features:
•NCO%3.0+-0.2
• MBCA/g(100g prepolymer):8.8
• Hardness (Shore A):80+-2
• 100% Modulus:4.3 Mpa
• Tensile strength :24MPa
• Elongation:610%
• Tear strength:55 N/mm
• Abrasion loss: 50mm³
Typical Uses: Mining, Industrial, OEM
Gel Time: +-12 min
Packaging: 25kg, 200kg
TDI/PTMEG/90A
Application: Hand Pour or Machine Dispensed
Features:
• NCO% 4.2+-0.2
• MBCA/g(100g prepolymer):12.1
• Hardness (Shore A):90+-2
• 100% Modulus:7.5 Mpa
• Tensile strength :33MPa
• Elongation:500%
• Tear strength:78 N/mm
• Abrasion loss: 39mm³
Typical Uses: Mining, Industrial, OEM
Gel Time: +-10 min
Packaging: 25kg, 200kg
TDI/PTMEG/72D
Application: Hand Pour or Machine Dispensed
Features:
• NCO% 8.6+-0.2
• MBCA/g(100g prepolymer):25
• Hardness (Shore D):72+-2
• 100% Modulus:26.9 Mpa
• Tensile strength :44MPa
• Elongation:250%
• Tear strength:185 N/mm
• Abrasion loss: 72mm³
Typical Uses: Hand Pour or Machine Dispensed
Gel Time:+-6 min
Packaging: 25kg, 200kg
TDI/PTMEG/72D
Application: Hand Pour or Machine Dispensed
Features:
• NCO% 8.6+-0.2
• MBCA/g(100g prepolymer):25
• Hardness (Shore D):72+-2
• 100% Modulus:26.9 Mpa
• Tensile strength :44MPa
• Elongation:250%
• Tear strength:185 N/mm
• Abrasion loss: 72mm³
Typical Uses: Hand Pour or Machine Dispensed
Gel Time: +-4 min
Packaging: 25kg, 200kg
TDI/PTMEG/75D
Application: Hand Pour or Machine Dispensed
Features:
• NCO% 9.6+-0.2
• MBCA/g(100g prepolymer):27
• Hardness (Shore D):75+-2
• 100% Modulus:32.6Mpa
• Tensile strength :54MPa
• Elongation:220%
• Tear strength:160 N/mm
• Abrasion loss: 70 mm³
Typical Uses: Hand Pour or Machine Dispensed
Gel Time: +-2 min
Packaging: 25kg, 200kg
UrePac® Hot Cast Products – POPG Grades
TDI/POPG/85A
Application: Hand Pour or Machine Dispensed
Features:
• NCO% 5.5+-0.2
• MBCA/g(100g prepolymer):16
• Hardness (Shore A):88+-2
• 100% Modulus:5.5 Mpa
• Tensile strength :32MPa
• Elongation:400%
• Tear strength:76 N/mm
• Abrasion loss: 109 mm³
Typical Uses: Mining, Industrial, OEM
Gel Time: +- 9 min
Packaging: 25kg, 200kg
TDI/POPG/90A
Application: Hand Pour or Machine Dispensed
Features:
• NCO% 5.0+-0.2
• MBCA/g(100g prepolymer):14.5
• Hardness (Shore A):90+-2
• 100% Modulus:8.9 Mpa
• Tensile strength :31MPa
• Elongation:460%
• Tear strength:73 N/mm
• Abrasion loss: 135 mm³
Typical Uses: Mining, Industrial, OEM
Gel Time: +- 3.5 min
Packaging: 25kg, 200kg
TDI/POPG/95A
Application: Hand Pour or Machine Dispensed
Features:
• NCO% 6.2+-0.2
• MBCA/g(100g prepolymer):18
• Hardness (Shore A):94+-2
• 100% Modulus:9.2 Mpa
• Tensile strength :32MPa
• Elongation:450%
• Tear strength:78 N/mm
• Abrasion loss: 117 mm³
Typical Uses: Mining, Industrial, OEM
Gel Time: +- 3 min
Packaging: 25kg, 200kg
UrePac® Hot Cast Products – Polyester Grades
TDI/Polyester/75A
Application: Hand Pour or Machine Dispensed
Features:
• NCO% 2.1+-0.2
• MBCA/g(100g prepolymer):6
• Hardness (Shore A):75+-2
• 100% Modulus:2.8Mpa
• Tensile strength :39MPa
• Elongation:770%
• Tear strength:56 N/mm
• Abrasion loss: 38 mm³
Typical Uses: Mining, Industrial, OEM
Gel Time: +- 9 min
Packaging: 25kg, 200kg
TDI/Polyester/80A
Application: Hand Pour or Machine Dispensed
Features:
• NCO% 3.0+-0.2
• MBCA/g(100g prepolymer):.9
• Hardness (Shore A):80+-2
• 100% Modulus:3.8 Mpa
• Tensile strength :46MPa
• Elongation:680%
• Tear strength:70 N/mm
• Abrasion loss: 42 mm³
Typical Uses: Mining, Industrial, OEM
Gel Time: +- 12 min
Packaging: 25kg, 200kg
TDI/Polyester/90A
Application: Hand Pour or Machine Dispensed
Features:
• NCO% 4.3+-0.2
• MBCA/g(100g prepolymer):12.5
• Hardness (Shore A):90+-2
• 100% Modulus:5.3 Mpa
• Tensile strength :50 MPa
• Elongation:660%
• Tear strength:97 N/mm
• Abrasion loss: 39 mm³
Typical Uses: Mining, Industrial, OEM
Gel Time: +- 8 min
Packaging: 25kg, 200kg
TDI/Polyester/95A
Application: Hand Pour or Machine Dispensed
Features:
• NCO% 5.0+-0.2
• MBCA/g(100g prepolymer):14.5
• Hardness (Shore A):94+-2
• 100% Modulus:8.6 Mpa
• Tensile strength :53MPa
• Elongation:600%
• Tear strength:112 N/mm
• Abrasion loss: 51 mm³
Typical Uses: Mining, Industrial, OEM
Gel Time: +- 6 min
Packaging: 25kg, 200kg
TDI/Polyester/97A
Application: Hand Pour or Machine Dispensed
Features:
• NCO% 6.0+-0.2
• MBCA/g(100g prepolymer):17.2
• Hardness (Shore A):97+-2
• 100% Modulus:12.2 Mpa
• Tensile strength :55MPa
• Elongation:530%
• Tear strength:122 N/mm
• Abrasion loss: 55 mm³
Typical Uses: Mining, Industrial, OEM
Gel Time: +- 2 min
Packaging: 25kg, 200kg
UrePac® Hot Cast Products – Caprolactone Grades
TDI/Caprolactone/80A
Application: Hand Pour or Machine Dispensed
Features:
• NCO% 3.6+-0.2
• MBCA/g(100g prepolymer):10.5
• Hardness (Shore A):80+-2
• 100% Modulus:3.3 Mpa
• Tensile strength :40MPa
• Elongation:550%
• Tear strength:51 N/mm
• Abrasion loss: 38 mm³
Typical Uses: Mining, Industrial, OEM
Gel Time: +8 min
Packaging: 25kg, 200kg
TDI/Caprolactone/93A
Application: Hand Pour or Machine Dispensed
Features:
• NCO% 6.0+-0.2
• MBCA/g(100g prepolymer):17.5
• Hardness (Shore A):93+-2
• 100% Modulus:10.5 Mpa
• Tensile strength :53MPa
• Elongation:400%
• Tear strength:100 N/mm
• Abrasion loss: 44 mm³
Typical Uses: Mining, Industrial, OEM
Gel Time: +4.5 min
Packaging: 25kg, 200kg
UrePac® Hot Cast Products – Amine Curatives
MCDEA, or 4,4′-Methylene-bis(3- chloro -2,6-diethylaniline), is a solid aromatic diamine that acts as a curing agent for epoxy resins and a chain extender for polyurethane prepolymers. It’s particularly known for enhancing high-temperature
performance and dynamic properties in cured elastomers.
Application: Hand Pour or Machine Dispensed
Features:
- MCDEA significantly improves the mechanical properties, heat resistance,
and dynamic properties of cured elastomers. - Equivalent Weight 189
Typical Uses: Mining, Industrial, OEM
Packaging: 25kg
Moca, specifically 4,4′- methylenebis (2-chloroaniline), is a chemical compound primarily used as a curing agent in the production of polyurethane. It appears as light brown to colorless granules and is a crucial component in creating high performance, specialized, castable urethane rubber products. These products, in turn, have diverse industrial applications, including tires, rollers, and other wear-resistant parts.
Application: Hand Pour or Machine Dispensed
Features:
- MOCA-cured polyurethanes are known for their excellent properties, including abrasion resistance, elasticity, tensile strength, and resistance to chemicals, oil, and moisture.
- Equivalent Weight 133.6
Typical Uses: Mining, Industrial, OEM
Packaging: 50kg
Dimethylthiotoluenediamine (DMTDA) is a liquid aromatic diamine used as a curing agent in polyurethane. It’s known for its ability to enhance strength, durability, and chemical resistance in these materials. DMTDA is a liquid with low viscosity at room temperature, making it suitable for low-temperature applications and offering a longer pot life compared to other curing agents.
Application: Hand Pour or Machine Dispensed
Features:
- Low viscosity: Makes it easier to handle and apply, especially in low-temperature environments.
- Extended pot life: Allows for longer working times before the material starts
to cure. - High strength and durability: DTMDA-cured materials exhibit good mechanical properties, including resistance to abrasion, chemicals, and impact.
- Equivalent Weight 107
Typical Uses: Mining, Industrial, OEM
Packaging: 200kg
