Product Description
Our polyurethane prepolymers are meticulously engineered and rigorously controlled intermediates that form the essential foundation for the superior performance of your end products. We offer a diverse range of prepolymers based on MDI, TDI, and other specialty diisocyanates to meet your most demanding application requirements.
Engineered for extreme environments, this grade offers exceptional resistance to a wide range of oils, greases, fuels, and industrial solvents. It maintains its excellent mechanical properties and dimensional stability even after prolonged immersion, overcoming the swelling and degradation typical of other elastomers. This makes it the premier material for critical sealing solutions like oil seals, piston cups, and hydraulic diaphragms, significantly extending service life and reducing maintenance downtime in automotive and industrial machinery.
Product Parameters
| Model |
L3425 |
| Appearance |
White solid |
| Hardness Shore A |
60--95 |
| Tensile Strength MPa |
45--60 |
| Elongation at Break % |
350--650 |
| Tear Strength Kn/M |
60-115 |
| Rebound % |
35 |
| Gel time min |
10 |
Our Advantages
- Superior End-Properties: Pre-polymerization allows us to pre-build the polymer chain structure, endowing final products with exceptional mechanical strength, abrasion resistance, elasticity, and chemical resistance.
- Processing Ease: The prepolymer route simplifies your production process. The reaction with curatives (e.g., MOCA) is more manageable and controllable, minimizing bubble formation and facilitating casting, potting, and coating.
- Formulation Flexibility: We offer a wide selection of NCO content, molecular weight, and functionality. Customization of soft and hard segments enables precise tuning of your product's hardness, modulus, and elongation.
- Consistent & Reliable Quality: Stringent process control and quality assurance ensure batch-to-batch consistency and reliability, guaranteeing stability in your manufacturing.
Our Capabilities & Services
- Customized Development: "Can't find a perfect match? Our lab can develop a custom formulation just for you."
- Technical Support: "From formulation recommendations to production process optimization, our team of experts provides comprehensive support."
- Quality Assurance: "Our ISO 9001 certification system and rigorous QC procedures ensure every batch is flawless."
- Global Supply Chain: "Our stable production capacity and efficient logistics network ensure you receive your products on time."
Packaging & Shipping
Packaging:
Drums, barrel, can, Isotank and So on
Shipping:
Promote shipping usually 7--14 days after receiving TT deposit or Original LC
Certifications
Audited Supplier 
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