Key Properties
1. High-Temperature Stability
- Continuous service temperature: **150–170°C**; short-term tolerance up to **200°C**.
- Outperforms NBR in heat aging resistance.
2. Superior Oil and Fuel Resistance
- Resists sulfurized oils, oxidized lubricants, and biofuels (e.g., biodiesel) without significant swelling.
3. Ozone and UV Resistance
- Maintains integrity in outdoor or ozone-rich environments (e.g., near engines).
4. Low Gas Permeability
- Effective for sealing volatile hydrocarbons and gases.
5. Moderate Compression Set
- Improved formulations reduce permanent deformation under compression.
6. Electrical Insulation
- Suitable for high-temperature cable coatings in automotive/industrial settings.
7. Chemical Limitations
- Vulnerable to hydrolysis (water/acid/alkali exposure) and polar solvents (esters, ketones).
8. Low-Temperature Brittleness
- Standard ACM becomes brittle below -25°C; modified grades extend to -40°C.
Primary Applications
1. Automotive Industry
-Valve stem seals, transmission gaskets, turbocharger hoses** (resistant to engine oil at 150°C+).
- Fuel system seals** for biodiesel compatibility.
2. Industrial Equipment
- Hydraulic seals, oil refinery gaskets (resistant to sulfurized lubricants).
- High-temperature conveyor belts in manufacturing.
3. Electrical Engineering
- Insulation layers for wires in engine compartments or industrial heaters.
ACM excels in high-temperature oil environments where NBR fails and FKM is cost-prohibitive. While limited by brittleness at low temperatures and hydrolysis susceptibility, ongoing advancements in copolymerization (e.g., ethylene-acrylate hybrids) and filler technology are expanding its use in electric vehicles and advanced machinery. For niche requirements, consult technical datasheets or tailored polymer blends.
Service
