Differences between different materials used for filter cartridge end cover
Nov 04, 2025
Material Characteristics
Plastic end cover
Low cost and lightweight, but relatively weak corrosion resistance and strength; long-term use may lead to aging or deformation.
Carbon steel end cover
High strength and corrosion resistance, but heavier; require galvanizing to enhance surface corrosion resistance.
Stainless steel end cover (e.g., 304, 316 stainless steel)
Strong corrosion resistance, especially suitable for corrosive environments such as strong acids and alkalis; electropolishing can improve surface finish.
Aluminum alloy end cover
Low density and good heat dissipation, suitable for high-temperature conditions, but weaker corrosion resistance than stainless steel.
Application Scenarios
Plastic end caps are mostly used in ordinary hydraulic systems or cost-sensitive applications.
Carbon steel/stainless steel end caps are suitable for industrial equipment, chemical industries, and other applications requiring high strength and corrosion resistance.
Aluminum alloy end caps are commonly found in automotive fuel filters requiring lightweight design and good heat dissipation.
Lifespan and Maintenance
Plastic end caps are prone to aging and require periodic replacement (usually on a short interval).
Stainless steel/carbon steel end caps have a longer lifespan and lower maintenance costs.
Plastic end cover
Low cost and lightweight, but relatively weak corrosion resistance and strength; long-term use may lead to aging or deformation.
Carbon steel end cover
High strength and corrosion resistance, but heavier; require galvanizing to enhance surface corrosion resistance.
Stainless steel end cover (e.g., 304, 316 stainless steel)
Strong corrosion resistance, especially suitable for corrosive environments such as strong acids and alkalis; electropolishing can improve surface finish.
Aluminum alloy end cover
Low density and good heat dissipation, suitable for high-temperature conditions, but weaker corrosion resistance than stainless steel.
Application Scenarios
Plastic end caps are mostly used in ordinary hydraulic systems or cost-sensitive applications.
Carbon steel/stainless steel end caps are suitable for industrial equipment, chemical industries, and other applications requiring high strength and corrosion resistance.
Aluminum alloy end caps are commonly found in automotive fuel filters requiring lightweight design and good heat dissipation.
Lifespan and Maintenance
Plastic end caps are prone to aging and require periodic replacement (usually on a short interval).
Stainless steel/carbon steel end caps have a longer lifespan and lower maintenance costs.
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