Ethylene Propylene O-Ring Description
Ethylene propylene o-rings, also known as EPDM o-rings, are a sealing element made of ethylene propylene rubber (EPDM). EPDM is a synthetic rubber made of ethylene, propylene, and a small amount of a third monomer (e.g., diolefin) copolymerized, which has excellent heat, weather, chemical, and electrical insulation properties. O-rings, as a common seal, are widely used in various industrial and mechanical fields to prevent the leakage of fluids or gases.
Features of ethylene propylene o-rings
Heat resistance: EPDM rubber can be used for a long time in the temperature range of -60°C to 150°C, and some specially formulated EPDM can even withstand temperatures up to 200°C.
Weather resistance: EPDM rubber has good resistance to UV rays, ozone, and atmospheric chemicals, making it ideal for outdoor use.
Chemical resistance: EPDM has good resistance to a wide range of chemicals such as acids, alkalis, salts, and oils, making it widely used in the chemical industry.
Electrical insulation: EPDM rubber is an excellent electrical insulating material, suitable for sealing electrical and electronic equipment.
Elastomeric and compression set: EPDM has good elasticity and a low compression set, which means that O-rings retain good sealing properties even after prolonged compression.
Water resistance: EPDM has low water absorption, so it retains its performance even in water or humid environments.
| Product name | Ethylene Propylene O-Ring |
| Product material | EPDM |
| Hardness (Shore A) | 20 to 90 |
| Applicable temperature °C | -60 to 200 |
| Color | Black, orange, blue, yellow, green, custom |
| Size | Standard/ Custom |
| Advantage | Heat-resistant, weather-resistant, chemical-resistant, electrically insulating |
| Application | Automotive, Construction, Aerospace, Medical |
| Certification | ISO: 9001, ISO: 14001, IATF: 16949 |
Applications of ethylene propylene o-rings
Automotive industry: In automotive engines, transmissions, braking systems, and air conditioning systems, EPDM O-rings are used for sealing and shock absorption.
Construction industry: EPDM O-rings provide an effective sealing solution in the sealing of doors and windows, roof waterproofing and pipe connections in buildings.
Aerospace: In the aerospace sector, EPDM O-rings are used in fuel systems, hydraulic systems, and environmental control systems for aircraft and spacecraft.
Chemical & Petroleum: In the chemical and petroleum industries, EPDM O-rings are used to seal pumps, valves, and pipelines to prevent chemical leaks.
Medical devices: EPDM O-rings are used for components that require chemical and high-temperature resistance, such as sterilization equipment and medical device seals.
Manufacture of ethylene propylene o-rings
The manufacturing process of EPDM o-rings typically includes the following steps:
Material preparation: Select the appropriate EPDM rubber formulation, and adjust it according to the desired physical and chemical properties.
Compounding: Mixing EPDM rubber with various additives such as vulcanizing agents, fillers, antioxidants, etc., to improve its properties.
Molding: The mixed rubber is pressed into the shape of an O-ring through a mold.
Vulcanization: The formed O-ring is vulcanized at a certain temperature and pressure to enhance its elasticity and durability.
Post-processing: Vulcanized O-rings may require post-processing steps such as cutting, trimming, and cleaning.
Quality Inspection: O-rings are tested for size, hardness, elasticity, and chemical resistance to ensure they meet quality standards.
Conclusion
Ethylene propylene O-rings have become an indispensable sealing element in modern industry due to their excellent performance and wide range of applications. As technology continues to advance, so does the performance of EPDM o-rings to meet more stringent industrial demands. Whether under extreme temperature conditions or in chemically corrosive environments, EPDM O-rings provide reliable sealing performance to ensure the safety and efficiency of the system.
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