Industrial-Grade Flange Gasket for Leak Prevention
Features and Benfits
• Only premium, brand-name high-level rubbers are meticulously selected and utilized in our manufacturing process.
• The rubber is meticulously mixed using state-of-the-art automatic mixing machines, thereby eliminating any potential influence or variability introduced by human operators, ensuring consistency and precision.
• Prior to the vulcanization stage, all standard and critical physical properties of the rubber, such as tensile strength, hardness, and elasticity, are rigorously tested in-house to guarantee compliance with our stringent quality standards.
• Our rubber mixing process is proudly certified under ISO/TS 16949, an international standard specifically tailored for the automotive industry, which underscores our commitment to meeting the highest quality management system requirements for the design and production of automotive-related products.
• Furthermore, the vulcanization process, a crucial step in transforming raw rubber into a durable, finished product, is ISO 9001 certified, attesting to our adherence to a robust quality management system that ensures customer satisfaction and regulatory compliance at every stage of production.
Technical Details
Size Range
DN40 to DN1400
Rbuuer
EPDM / Buna-N / VITON / HNBR / CSM / NR / SILICON / CR / IIR / PU / SBR
Maximum Allowable Operating Pressure
16 bar
Application Temperature Range
Based on material
Special Options
• WRAS
• NSF-61
• E-KTW
• FDA
Applications
• General Industrial Applications
• Heating, Ventilation, and Air Conditioning (HVAC)
• Water Treatment and Distribution
• Wastewater Management Systems
• Chemical and Petrochemical Processing Industries
• Handling of Acids and Corrosive Substances
• Gas Processing and Distribution
• Vacuum Systems and Applications
• Food and Beverage Production Processes
• Power Generation and Utility Services
• Pulp and Paper Manufacturing
• Marine and Commercial Shipbuilding Industry
Temperature Range
| Material | Advantages / Limitations | Continuous Service Temperature Range (>1000 hrs) | Intermittent Service Temperature Range (4 hrs) |
| EPDM | EPDM (Ethylene Propylene Diene Monomer) is a highly durable synthetic rubber known for its excellent performance in high-temperature environments. This versatile material is compatible with a wide range of substances, including hot and cold water, glycols, detergents, phosphate esters, ketones, and alcohols, making it ideal for numerous applications. However, EPDM is not recommended for use with hydrocarbon-based oils, lubricants, or compressed air systems that contain hydrocarbons, as it may not maintain its integrity in such conditions. | -46℃ to 135℃(-50℉ to 275℉) | -51℃ to 149℃ (-60℉ to 300℉ ) |
| Buna-N/NBR | Buna-N, also referred to as Nitrile or NBR (Nitrile Butadiene Rubber), is a highly adaptable material widely used in a variety of industrial applications. It is particularly well-suited for environments involving ambient temperature water, vacuum systems, compressed air, salt solutions, alkaline solutions, and both saturated and unsaturated aliphatic hydrocarbons. However, Buna-N is not recommended for exposure to strong oxidizing agents, nitrated hydrocarbons, ketones, acetates, phenols, aldehydes, or gasoline containing additives. Additionally, Buna-N may experience swelling in hot water environments, which can lead to increased operating torque and affect overall performance. | -12℃ to 82℃(+10℉ to 220℉) | -12℃ to 93℃ (+10℉ to 280℉ ) |
| VITON | Viton® is a premium fluoroelastomer known for its exceptional chemical resistance and superior performance at elevated temperatures. This material exhibits excellent resistance to oils, fuels, and a wide range of chemicals, outperforming Buna-N in many applications. Viton® is particularly well-suited for use with hydrocarbons, mineral acids, both dilute and concentrated acid solutions, as well as alcohols. However, Viton® is not recommended for high-temperature water and steam applications due to its tendency to swell under such conditions. It also tends to harden when exposed to lower temperatures, which can result in increased operating torque. | -12℃ to 177℃(+10℉ to 350℉) | -12℃ to 205℃ (+10℉ to 400℉ ) |
| H-NBR | HNBR (Hydrogenated Nitrile Butadiene Rubber) is a high-performance rubber compound designed to withstand challenging environments. It offers excellent resistance to petroleum-based oils and fuels, aliphatic hydrocarbons, vegetable oils, silicone oils and greases, ethylene glycol, water, and steam at temperatures up to 150°C (300°F). Additionally, it performs well in dilute acids, bases, and salt solutions at moderate temperatures. However, HNBR is sensitive to chlorinated hydrocarbons, esters, ethers, ketones, and strong acids, which can compromise its integrity. | -29℃ to 143℃(-20℉ to 290℉) | -29℃ to 180℃(-20℉ to 356℉) |
| CSM | CSM has several key properties that make it suitable for hazardous environments, including high resistance to ozone, UV, weathering, and chemicals, along with improved heat aging and low gas permeability. Similar to Chloroprene, CSM rubber has poor low-temperature flexibility but high chemical resistance. However, it has poor fuel resistance, making it unsuitable for automotive applications. Additionally, CSM is not recommended for dynamic sealing applications due to its poor compression set. | -20℃ to 125℃(-4℉ to 257℉) | -20℃ to 150℃(-4℉ to 302℉) |
| NR | Natural rubber performs well with alcohols and organic acids but has poor resistance to hydrocarbon oil. It is not suitable for UV, oxygen, and ozone due to the double bond in its polymer backbone. However, special additives can improve its weathering resistance. NR is often vulcanized to enhance resistance, elasticity, and prevent degradation. | -50℃ to 70℃(-58℉ to 158℉) | -50℃ to 80℃(-58℉ to 176℉) |
| SILICON | Silicone rubber is renowned for its exceptional heat resistance, flexibility, and chemical stability, making it an ideal material for applications in extreme conditions. It is highly resistant to both high and low temperatures and is compatible with water, steam, and most chemicals. However, it is not suitable for contact with hydrocarbon oils. Silicone rubber should also be avoided in environments involving strong bases, hydrofluoric acid, high-temperature oils, or aromatic hydrocarbons, as these substances can degrade its performance. | -60°C to 230°C(-76°F to 446°F) | -60°C to 300°C(-76°F to 572 °F) |
| CR | Chloroprene (CR) rubber, also known as Neoprene, offers good resistance to oils, weathering, and ozone, with versatile mechanical properties. It excels in water-based applications and moderate chemical exposure, providing resilience across a wide temperature range. However, it is not suitable for aromatics, ketones, esters, and strong polar solvents, as it may swell or degrade. | -7℃ to 93℃(+20℉ to 200℉) | -7℃ to 107℃(+20℉ to 225℉) |
| IIR | Butyl rubber offers superior gas impermeability, great heat resistance, and durability, making it perfect for airtight seals and membranes. It is suitable for contact with air, water, oils, and various chemicals, making it versatile for sealing applications across industries. However, it is not recommended for use with strong oxidizers, aromatic hydrocarbons, or halogenated solvents, as it may degrade or swell. | -40℃ to 130℃(-40℉ to 266℉) | -40℃ to 150℃(-40℉ to 302℉) |
| PU | Polyurethane rubber offers exceptional tear strength, high resilience, and outstanding resistance to oils, fuels, and abrasion. It excels in dynamic applications, hydraulic systems, and harsh chemical environments, making it ideal for seals, wheels, and industrial parts. However, it is not suitable for prolonged exposure to esters, ketones, and certain solvents, as they can cause degradation. | -40℃ to 80℃(-40℉ to 176℉) | -40℃ to 100℃(-40℉ to 212℉) |
| SBR | SBR is economical, has strong mechanical performance, superior abrasion resistance, and versatility with fluids like water and weak acids. It is ideal for applications demanding durability and economy, such as sealing, hoses, and gaskets for non-corrosive liquid handling. However, it is not suitable for use with oils, fuels, and strong oxidizing agents due to its limited chemical resistance. | -51℃ to 80℃(-60℉ to 176℉) | -51℃ to 100℃(-60℉ to 212℉) |