material types for high temperature resistant plastic parts

Many industrial and electronic products require stable performance in high-temperature environments. Choosing suitable high temperature resistant plastic components is critical to avoid deformation, aging, cracking or functional failure during long-term operation. Selecting the right heat-resistant plastic material helps manufacturers improve product durability and reduce after-sales risks.

Common High Temperature Resistant Plastic Materials & Core Parameters

Different plastic resins have distinct heat resistance thresholds. For custom injection molding projects, working temperature is the top factor for material selection. Below are the most widely used high-temperature plastic materials for industrial and commercial plastic parts.
 

1. PBT (Polybutylene Terephthalate)

Heat Resistance: Continuous working temperature 150°C–180°C
Features: Good thermal stability, low shrinkage, excellent insulation and flame retardancy. Easy for precision injection molding.
Application: Electronic connectors, switch parts, household appliance internal components.
 

2. PC (Polycarbonate)

Heat Resistance: Continuous working temperature 120°C–135°C
Features: High toughness, impact resistance, transparent and dimensionally stable. Resists thermal aging under moderate high temperature.
Application: Lamp housings, electrical enclosures, high-temperature transparent covers.

3. PPS (Polyphenylene Sulfide)

Heat Resistance: Continuous working temperature 220°C–240°C
Features: Excellent heat resistance, chemical resistance and flame retardancy. Stable size in high-temperature and corrosive environments.
Application: Automotive thermal system parts, industrial high-temperature valves, electrical insulation components.

4. PEEK (Polyether Ether Ketone)

Heat Resistance: Continuous working temperature up to 260°C
Features: Top-tier high-performance plastic with ultra-high heat resistance, wear resistance and aging resistance. Meets medical and industrial high-standard requirements.
Application: Medical equipment parts, aerospace components, precision industrial high-temperature parts.

If you need custom high-temperature resistant plastic parts or professional material matching and injection mold development services, we provide one-stop OEM & ODM custom solutions for various industrial heat-resistant plastic components.