Here's a polished description for the AN6226 Series 6226-53 U-Cups in Standard EPDM:
AN6226 Series U-Cup Seals - EPDM (Ethylene Propylene Diene Monomer) - AN6226-53
Dimensions: 1-1/4" I.D. x 1-5/8" O.D. x 3/16" C/S
Material: Standard 70 Durometer EPDM
The AN6226 Series U-Cups are designed to meet Army-Navy specification AN6226, providing high reliability and performance in demanding sealing applications. Made from durable 70 durometer EPDM, these seals offer excellent resistance to water, steam, and a range of chemicals, making them ideal for various hydraulic and pneumatic systems.
Key Features:
- Pressure Rating: Effective sealing up to 500 PSI, ensuring long-lasting performance under high-pressure environments.
- High Durability: EPDM material is well-suited for applications involving exposure to heat, ozone, and aging, providing excellent service life.
- Industry Standard: Part-numbered as AN6226-53, following the industry-standard AN dash numbering system for easy identification and compatibility.
These U-Cups are engineered for superior performance, providing reliable sealing for both static and dynamic applications. Ideal for military, aerospace, and industrial use where conformance to stringent specifications is required.
Standard EPDM (Ethylene Propylene Diene Monomer) in 70 Durometer is a versatile elastomer widely used in various industries due to its excellent resistance to environmental factors, chemicals, and temperature extremes. Here's a breakdown of the chemicals it resists and the common uses for EPDM:
Chemical Resistance of EPDM 70 Durometer:
- Excellent Resistance To:
- Water and Steam: EPDM performs well in both hot and cold water applications, including steam up to 300°F (149°C).
- Acids: Good resistance to diluted acids like sulfuric acid, nitric acid, and hydrochloric acid.
- Alkaline Solutions: Effective against sodium hydroxide, potassium hydroxide, and other caustic materials.
- Ozone, UV, and Weathering: Exceptional resistance to outdoor exposure, making it ideal for long-term use in harsh environments.
- Ketones and Alcohols: Effective in environments with acetone, MEK (Methyl Ethyl Ketone), and ethanol or methanol.
- Hydraulic Fluids (Phosphate Ester-based): Performs well with certain hydraulic fluids like Skydrol.
- Polar Solvents: Resistance to solvents like glycols and fluorocarbons.
- Limited Resistance To:
- Mineral Oils and Fuels: EPDM has poor resistance to oils, gasoline, and petroleum-based products, which limits its use in applications where exposure to these materials occurs.
- Not Resistant To:
- Hydrocarbons (Oils and Fuels): Like gasoline, diesel, or other petroleum-based lubricants.
- Aromatic Hydrocarbons: Such as toluene and xylene.
- Halogenated Solvents: Chlorinated solvents like trichloroethylene.
Common Uses of EPDM 70 Durometer:
- Automotive Applications:
- Cooling System Components: EPDM is used in radiator hoses, seals, and gaskets due to its excellent resistance to heat, water, and coolants.
- Brake Systems: Suitable for seals in brake systems using glycol-based brake fluids.
- Weatherstripping and Window Seals: Due to its weather and ozone resistance.
- Plumbing and HVAC:
- Gaskets and Seals for Water Systems: Used in hot and cold water systems, including potable water.
- O-Rings and Seals for Steam Systems: Effective in gaskets for steam pipes and pressure seals.
- Rubber Linings in Tanks: Common in applications involving weak acids and alkalis.
- Aerospace and Military:
- Hydraulic Systems: EPDM seals are used in aircraft and military equipment operating with phosphate ester-based hydraulic fluids.
- Seals in Weather-exposed Equipment: Used in applications where exposure to ozone and UV rays is likely.
- Industrial Applications:
- Chemical Processing Equipment: Used in seals for systems handling acids, alkalis, and other chemical solutions.
- Electrical Insulation: Due to its resistance to weather and electricity, EPDM is used in wire and cable insulation.
- Roofing Membranes: EPDM is commonly used in roofing applications due to its excellent weather and UV resistance.
- Food and Beverage:
- Gaskets and O-Rings: EPDM is FDA-approved for food-grade applications where seals may come in contact with food or beverages, particularly in water filtration and beverage dispensing systems.
Summary of EPDM Advantages:
- Excellent resistance to heat, water, steam, and certain chemicals.
- Ideal for outdoor applications due to superior resistance to ozone and UV rays.
- Highly versatile in industrial and automotive uses, where heat and chemical exposure is a concern.
- Not suitable for environments with petroleum oils, fuels, or aromatic hydrocarbons.
This makes EPDM 70 durometer a go-to material for sealing and gasket applications in environments with water, steam, and various chemicals, while remaining a durable choice for outdoor use.
