Rubber Seat Wihtout Backup Ring
Features and Benfits
• Premium Rubber Materials: We exclusively utilize top-tier, brand-name rubbers in our products.
• Automated Mixing for Consistency: Our rubber is mixed using automatic mixing machines, eliminating the potential for human error and ensuring consistent quality.
• In-House Testing: Prior to vulcanization, all standard physical properties of the rubber are rigorously tested in-house to guarantee performance.
• ISO/TS 16949 Certified Mixing Process: Our rubber mixing process adheres to the stringent standards of ISO/TS 16949, ensuring the highest level of quality control.
• ISO 9001 Certified Vulcanization Process: The vulcanization stage of our rubber production is certified under ISO 9001, further attesting to our commitment to excellence and reliability.
Technical Details
Size Range
DN40 to DN1200
Rbuuer
EPDM / Buna-N / VITON / HNBR / CSM / NR / SILICON / CR / IIR / PU / SBR / PTFE
Maximum Allowable Operating Pressure
16 bar
Application Temperature Range
Based on seat material
Special Options
• WRAS
• NSF-61
• E-KTW
• FDA
Applications
• General Industrial
• HVAC
• Water
• Wastewater
• Chemical/Petrochemical Processing
• Acids
• Gas
• Vacuum
• Food and Beverage
• Power and Utilities
• Pulp and Paper
• Marine and Commercial Shipbuilding
Temperature Range
| Seat Material | Advantages / Limitations | Continuous Service Temperature Range (>1000 hrs) | Intermittent Service Temperature Range (4 hrs) |
| EPDM | EPDM is a synthetic rubber designed for general use, particularly in environments with higher temperature demands. It is compatible with hot and cold water, glycol solutions, detergents, phosphate esters, ketones, and alcohols. However, it is not suitable for hydrocarbon-based oils and lubricants or for use in compressed air systems containing hydrocarbons. | -46℃ to 135℃(-50℉ to 275℉) | -51℃ to 149℃ (-60℉ to 300℉ ) |
| Buna-N/NBR | Also known as Nitrile or NBR, Buna-N is a durable material commonly used in general-purpose applications like handling water at ambient temperatures, vacuum environments, compressed air, salt solutions, alkaline solutions, and aliphatic hydrocarbons (both saturated and unsaturated). It is not recommended for use with strong oxidizing agents, nitrated hydrocarbons, ketones, acetates, phenols, aldehydes, or gasoline with additives. Additionally, Buna-N may swell when exposed to hot water, which could increase the operating torque. | -12℃ to 82℃(+10℉ to 220℉) | -12℃ to 93℃ (+10℉ to 280℉ ) |
| VITON | Viton® is a fluoroelastomer that offers exceptional resistance to oils and chemicals at higher temperatures. It is ideal for use with hydrocarbons and provides better chemical resistance than Buna-N. Additionally, Viton® is suitable for applications involving mineral acids, dilute and concentrated solutions, and alcohols. However, it is not recommended for high-temperature water or steam applications, as it may swell. Also, at lower temperatures, Viton® hardens, which can lead to increased operational torque. | -12℃ to 177℃(+10℉ to 350℉) | -12℃ to 205℃ (+10℉ to 400℉ ) |
| H-NBR | HNBR rubber compounds perform exceptionally well with petroleum-based oils and fuels, aliphatic hydrocarbons, vegetable oils, silicone oils and greases, ethylene glycol, water, and steam up to 150°C (300°F). They are also resistant to dilute acids, bases, and salt solutions at moderate temperatures. However, HNBR is not suitable for exposure to chlorinated hydrocarbons, esters, ethers, ketones, or strong acids. | -29℃ to 143℃(-20℉ to 290℉) | -29℃ to 180℃(-20℉ to 356℉) |
| CSM | CSM is a specialized material ideal for hazardous environments due to its resistance to ozone, UV, weathering, and chemicals, along with improved heat aging and low gas permeability. Similar to Chloroprene, it has poor low-temperature flexibility and excellent chemical resistance. However, it has limited fuel resistance, making it unsuitable for automotive applications. Additionally, CSM’s compression set properties make it unsuitable for dynamic sealing applications. | -20℃ to 125℃(-4℉ to 257℉) | -20℃ to 150℃(-4℉ to 302℉) |
| NR | Natural rubber is effective in applications involving alcohols and organic acids. However, it has poor resistance to hydrocarbon oils and is not suitable for exposure to UV light, oxygen, and ozone due to the presence of a double bond in its polymer structure. Its resistance to weathering can be improved by adding specific additives, and it is commonly vulcanized to enhance its elasticity and prevent degradation. | -50℃ to 70℃(-58℉ to 158℉) | -50℃ to 80℃(-58℉ to 176℉) |
| SILICON | Silicone rubber is highly valued for its outstanding heat resistance, flexibility, durability, and chemical stability, making it ideal for extreme conditions. It can safely come into contact with water, steam, most chemicals, and withstand both high and low temperatures, except for hydrocarbon oils. However, it is not suitable for exposure to strong bases, hydrofluoric acid, high-temperature oils, or aromatic hydrocarbons. | -60°C to 230°C(-76°F to 446°F) | -60°C to 300°C(-76°F to 572 °F) |
| CR | Chloroprene rubber, also known as Neoprene, is highly resistant to oils, weathering, and ozone, with versatile mechanical properties. It performs well in water-based applications and offers resilience in moderate chemical exposures, across a wide temperature range. However, it is not suitable for aromatic hydrocarbons, ketones, esters, or strong polar solvents, as these can cause swelling or degradation. | -7℃ to 93℃(+20℉ to 200℉) | -7℃ to 107℃(+20℉ to 225℉) |
| IIR | Butyl rubber is renowned for its excellent gas impermeability, heat resistance, and durability, making it ideal for airtight seals and membranes. It is compatible with air, water, oils, and many chemicals, making it versatile in sealing applications across multiple industries. However, it is not recommended for use with strong oxidizers, aromatic hydrocarbons, or halogenated solvents, as these can cause degradation or swelling. | -40℃ to 130℃(-40℉ to 266℉) | -40℃ to 150℃(-40℉ to 302℉) |
| PU | Polyurethane rubber offers outstanding tear strength, high resilience, and superior resistance to oils, fuels, and abrasion. It is ideal for dynamic applications, hydraulic systems, and environments exposed to harsh chemicals, making it perfect for seals, wheels, and industrial parts. However, it should not be used with esters, ketones, and certain solvents, as they can degrade the material. | -40℃ to 80℃(-40℉ to 176℉) | -40℃ to 100℃(-40℉ to 212℉) |
| SBR | SBR is an affordable material with strong mechanical performance, excellent abrasion resistance, and versatility with fluids like water and weak acids. It is ideal for applications that require durability and cost-effectiveness, including seals, hoses, and gaskets for handling non-corrosive liquids. However, it should not be used with oils, fuels, or strong oxidizing agents due to its limited chemical resistance. | -51℃ to 80℃(-60℉ to 176℉) | -51℃ to 100℃(-60℉ to 212℉) |