描述
Zytel 70G35HSRX BK099 PA66 is a 35% glass fiber reinforced, heat stabilized and hydrolysis resistant PA66 resin developed by Celanese for demanding automotive and industrial injection molding applications. It combines high mechanical strength, excellent stiffness, dimensional stability and long-term thermal performance with superior resistance to moisture and glycol-based coolants.
A key feature of this grade is that it was specifically developed for direct overmolding of rubber gaskets onto thermoplastic parts, making it widely used in automotive cooling systems where sealing performance and long-term durability are critical.
Shenzhen Ruiqing International Trade Co., Ltd. supplies original Zytel 70G35HSRX BK099 PA66 resin with TDS, SDS, quotation support and worldwide delivery.
Zytel 70G35HSRX BK099 PA66 Key Features
- 35% glass fiber reinforced PA66
- Heat stabilized
- Hydrolysis resistant
- Release agent modified
- High mechanical strength
- Excellent stiffness
- Outstanding dimensional stability
- Excellent coolant resistance
- Good abrasion resistance
- Good chemical resistance
- Injection molding grade
- Designed for direct gasket overmolding
Zytel 70G35HSRX BK099 PA66 Typical Applications
- Automotive cooling system components
- Thermostat housings
- Water outlet modules
- Coolant connectors
- Pump housings
- Engine compartment components
- Direct rubber gasket overmolding
- Industrial engineering parts
Advantages
Zytel 70G35HSRX BK099 PA66 combines high structural strength with excellent hydrolysis resistance, making it suitable for continuous exposure to hot coolant, moisture and elevated temperatures.
Unlike standard GF35 PA66 grades, this material was specifically developed for direct overmolding of elastomer gaskets onto thermoplastic components, helping reduce assembly steps while improving sealing reliability.
Related Products
Zytel 70G35HSRX BK099 PA66 Typical Properties
| Property | Typical Value |
|---|---|
| Material | PA66-GF35 |
| Grade | 70G35HSRX BK099 |
| Color | Black |
| Glass Fiber Content | 35% |
| Density | 1.41 g/cm³ |
| Tensile Modulus (Dry / Cond.) | 11500 / 9000 MPa |
| Tensile Strength at Break (Dry / Cond.) | 215 / 140 MPa |
| Elongation at Break (Dry / Cond.) | 3.2 / 5 % |
| Charpy Notched Impact (23°C) | 13 / 18 kJ/m² |
| Melting Temperature | 261°C |
| HDT (1.8 MPa) | 247°C |
| Molding Shrinkage (Flow) | 0.4% |
| Molding Shrinkage (Transverse) | 1.1% |
| Processing Method | Injection Molding |
The above values are from the published grade-specific Celanese technical datasheet.
Processing Recommendations
Dry the resin at 80°C for 2–4 hours before molding and keep moisture content below 0.20%. Typical melt temperature is 285–305°C, while recommended mold temperature is 70–120°C. These conditions help achieve optimum mechanical performance, dimensional stability and gasket overmolding quality.
Celanese Zytel PA Official Website
Zytel 70G35HSRX BK099 Technical Information
Zytel 70G35HSRX BK099 PA66 FAQ
What is Zytel 70G35HSRX BK099 PA66?
It is a 35% glass fiber reinforced, heat stabilized and hydrolysis resistant PA66 resin developed for demanding automotive cooling system applications.
What does HSRX mean?
HSRX identifies a heat stabilized, hydrolysis resistant PA66 grade optimized for automotive coolant environments and direct gasket overmolding applications.
What is the main application of this material?
It is widely used for automotive cooling modules, thermostat housings, coolant connectors and direct overmolding of elastomer gaskets onto thermoplastic parts.
What is the difference between 70G35HSRX BK099 and 70G35HSLR BK416LM?
70G35HSRX BK099 is specifically designed for direct gasket overmolding, while 70G35HSLR BK416LM focuses on hydrolysis resistance together with laser marking capability for automotive electrical and cooling components.
Can Shenzhen Ruiqing International Trade Co., Ltd. supply original material?
Yes. Shenzhen Ruiqing International Trade Co., Ltd. supplies original Zytel PA66 materials with TDS, SDS, quotation support and worldwide delivery.
