The EPDM 70 O-Ring, with a 3.5mm cross-section (CS) and 27mm inner diameter (ID), is a high-performance sealing component designed for environments requiring excellent resistance to heat, water, and weathering. Made from Ethylene Propylene Diene Monomer (EPDM), this O-ring is ideal for use in applications where exposure to steam, water, and harsh environmental conditions is common, while also offering good resistance to a variety of chemicals and fluids.

Material Properties:

• Material: EPDM (Ethylene Propylene Diene Monomer)
• Hardness: 70 Shore A
• Temperature Range: -45°C to +150°C (-49°F to +302°F)
• Resistance: Superior resistance to water, steam, ozone, UV, and certain chemicals including alkalis and acids.
• Weathering and Aging: Excellent resistance to aging, ensuring long-term durability even in outdoor environments exposed to sunlight and ozone.

Applications: This EPDM 70 O-Ring is highly versatile and is suitable for use in a wide range of sealing applications, such as:

• Water and steam systems: Ideal for use in plumbing, HVAC, and industrial water systems due to its resistance to water and steam.
• Outdoor and weather-exposed equipment: Excellent resistance to ozone and UV radiation makes it a reliable choice for outdoor sealing in electrical enclosures, pumps, and irrigation systems.
• Automotive industry: Commonly used in brake systems, cooling systems, and other applications where contact with glycol-based fluids or water is common.
• Chemical processing: Resists exposure to weak acids, alkalis, and various polar solvents.

Key Features:

• Exceptional water and steam resistance: Ensures reliable performance in high-humidity and steam-heavy environments, making it perfect for water-handling applications.
• Wide temperature range: Performs well in both low and high temperatures, providing consistent sealing in demanding thermal conditions.
• Excellent weather resistance: Withstands exposure to ozone, UV, and other harsh environmental conditions, ensuring long-lasting outdoor performance.
• Chemical compatibility: Good resistance to a range of chemicals, including alcohols, weak acids, and alkalis, making it suitable for various industrial processes.

Dimensions:

• Cross-Section (CS): 3.5mm
• Inner Diameter (ID): 27mm
• Outer Diameter (OD): 34mm

Industry Compliance:

• Standards: This EPDM O-ring complies with ISO 3601 and other international standards governing O-ring materials and dimensions, ensuring high quality and reliable sealing performance across various applications.
• Regulatory Compliance: EPDM O-rings are commonly used in potable water applications as they comply with NSF/ANSI 61 standards.

Advantages of EPDM:

• Resistant to harsh weather: The ability to withstand ozone and UV exposure ensures that the O-ring performs well in outdoor and exposed environments.
• Non-reactive with polar fluids: Unlike many other elastomers, EPDM resists polar fluids like alcohols and glycols, making it perfect for specialized industrial applications.

Limitations:

• Oil resistance: EPDM is not suitable for applications involving exposure to petroleum-based oils and fuels. In such cases, a different material, such as Buna-N, would be more appropriate.

Conclusion: The EPDM 70 O-Ring 3.5mm CS x 27mm ID is an excellent sealing solution for a variety of industrial and commercial applications, particularly those involving water, steam, and exposure to harsh environmental elements. Its exceptional durability, broad temperature tolerance, and reliable chemical resistance make it a versatile choice for both indoor and outdoor use.