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High-performance thermoplastic elastomer (TPEE) with exceptional dynamic fatigue resistance.
Excellent balance of toughness, flexibility, and creep resistance across a wide temperature range (–40 °C to 150 °C short-term).
Outstanding resistance to oils, greases, and many common automotive and industrial fluids.
Good processability via injection molding and extrusion, with low moisture sensitivity versus competing TPEs.
Carbon-black pigmented grade (DYM350BK) offering inherent UV stability and consistent electrical conductivity for static-dissipative applications.
Automotive under-hood components including air ducts, turbocharger hoses, and sensor boots.
Industrial power transmission belts and timing belt covers requiring high resilience and heat endurance.
Oil and gas downhole tool components exposed to hydrocarbons and elevated temperatures.
Static-dissipative fluid handling systems in semiconductor manufacturing equipment.
Heavy-duty cable jacketing and strain relief boots for robotics and automation systems.
| Chemical Type | Thermoplastic Polyester Elastomer (TPEE) |
| Product Form | Pellets |
| Appearance | Black, opaque, free-flowing pellets |
| Primary Applications | Dynamic sealing, flexible hose, static-dissipative components, high-temperature elastomeric parts |
| Key Features | Oil resistance, thermal stability, fatigue resistance, UV-stabilized, conductive (surface resistivity ~10⁴–10⁶ Ω/sq) |
| Processing Method | Injection molding, extrusion, blow molding |
| Drying Requirement | Recommended: 4–6 hours at 80–100 °C (dew point ≤ –40 °C) |
| Storage Condition | Keep sealed in dry, cool environment; avoid prolonged exposure to ambient humidity |
Q1: What is the primary distinction between Hytrel DYM350BK and other grades in the Hytrel TPEE family?
A: Hytrel DYM350BK is a black-pigmented, medium-hardness thermoplastic elastomer engineered for enhanced processability in extrusion and injection molding. Unlike higher-melt-viscosity or specialty-function grades, it offers balanced elasticity and melt flow, making it particularly suited for continuous-profile applications such as seals, gaskets, and flexible housings.
Q2: Is Hytrel DYM350BK suitable for applications requiring resistance to oils, greases, and elevated temperatures?
A: Yes — as a polyester-based TPEE, Hytrel DYM350BK exhibits inherent resistance to many hydrocarbon-based oils and greases, along with good long-term thermal stability. It retains mechanical performance at continuous use temperatures up to approximately 120°C, though actual service limits depend on stress conditions and environmental exposure duration.
Q3: Can Hytrel DYM350BK be overmolded onto common engineering thermoplastics?
A: Yes — Hytrel DYM350BK demonstrates strong adhesion to substrates such as polypropylene (PP), polyethylene (PE), and certain polyamides (e.g., PA6 and PA66) when processed under optimized temperature and mold surface conditions. Adhesion performance may vary depending on substrate surface energy, drying, and processing parameters.
Q4: Does this grade contain any halogenated flame retardants or heavy metals?
A: No — Hytrel DYM350BK is formulated without added halogenated flame retardants, lead, cadmium, mercury, or hexavalent chromium. It complies with RoHS Directive (2011/65/EU) requirements for restricted substances in electrical and electronic equipment.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
