O-Ring

APPLICATION SCENARIOS

1. Sealing of engine fuel systems to prevent fuel leakage  

2. Sealing of hydraulic brake systems to ensure the safety of brake oil circuits  

3. Sealing of cooling system pipeline connections to prevent external coolant leakage  

4. Sealing of interfaces between air conditioning system compressors and pipes to ensure air tightness

Product Description

AEM (ethylene-acrylic ester rubber) is a synthetic rubber material that combines high temperature resistance, oil resistance, and low temperature resistance, suitable for various high-performance sealing scenarios. This material can be used stably for long periods at -40℃～175℃, with short-term temperature resistance up to 200℃. Its oil heat resistance is superior to NBR and comparable to FKM, while also exhibiting excellent elasticity and anti-aging properties. It is widely used in key components such as engines, transmissions, turbine systems, hydraulic seals, and refrigerant seals in the automotive, industrial equipment, and aerospace industries.

PRODUCT FUNCTION

Excellent high-temperature resistance: Long-term temperature resistance up to 175℃, short-term up to 200℃, suitable for high-temperature working conditions such as engines, transmissions, and supercharging systems;  

Outstanding oil resistance: Resistant to corrosion from various oils including hot engine oil, gear oil, ATF fluid, and aviation fuel;  

Good low-temperature resistance and elasticity retention: Low-temperature flexibility is superior to traditional ACM/NBR materials, meeting low-temperature startup requirements;  

Strong refrigerant resistance/compression resistance: Applicable to compressor sealing in refrigerant environments such as R134a and R1234yf;  

Anti-aging and oxidation resistance: Excellent stability under the action of ozone, hot air, and chemical media, suitable for long-term use.

PERFORMANCE INDEX

Temperature resistance range: -40℃～175℃ (long-term), short-term temperature resistance up to 200℃  

Oil resistance (ASTM #3 oil immersion at 150℃×70h): Volume change rate <10%, hardness change <±5 Shore A  

Compression set: ≤25% (150℃×22h)  

Tensile strength: ≥10MPa, elongation at break ≥200%  

Refrigerant resistance: No cracks or performance failure after 500h of continuous operation at 120℃ in R134a environment  

Environmental regulations: Compliant with multiple environmental requirements such as RoHS, REACH, PAHs, TSCA, PFAS, etc.

APPLICATION AREA

AEM rubber is widely used in:  

Automotive industry: Engine oil seals, turbocharger pipes, AT transmission seals, PCV system seals, etc.;  

Industrial field: Hydraulic system sealing rings, hydraulic cylinder gaskets, refrigerant compressor seals;  

Aerospace: Aviation fuel system seals, high-temperature oil product seals around aero-engines;  

New energy equipment: Applications of heat-resistant oil cooling seals in electric drive systems;  

High-temperature and oil-resistant environments: Suitable for long-term sealing requirements under severe conditions of high-frequency cycles and alternating cold and heat.