Materials

EPDM is a synthetic rubber composed of ethylene, propylene, and a small amount of diene monomer, resulting in a polymer with excellent resilience and chemical stability. EPDM exhibits a moderate density, contributing to its flexibility and ease of handling. The hardness of EPDM, measured on the Shore A scale, ranges from 40 to 90, indicating variations in the material’s flexibility.

Density: EPDM exhibits a moderate density, contributing to its flexibility and ease of handling.

Hardness: The hardness of EPDM, measured on the Shore A scale, ranges from 40 to 90, indicating variations in the material’s flexibility.

Tensile Strength: EPDM rubber typically possesses tensile strength ranging from 7 MPa to 21 MPa, indicating its ability to withstand stretching forces.

Elongation at Break: EPDM exhibits substantial elongation at break, typically ranging from 100% to 600%, highlighting its stretchability.

Tear Strength: The tear strength of EPDM, ranging from 20 N/mm to 60 N/mm, signifies its resistance to tearing forces.

Temperature Range: EPDM rubber performs effectively in a broad temperature range, withstanding temperatures from approximately -50°C to 150°C (-58°F to 302°F).

Coefficient of Thermal Expansion: EPDM exhibits a moderate coefficient of thermal expansion, contributing to its dimensional stability over varying temperatures.

Dielectric Strength: EPDM rubber demonstrates good dielectric strength, typically around 20 kV/mm, making it suitable for electrical insulation applications.

Volume Resistivity: EPDM maintains high volume resistivity, typically around 1 x 10^14 ohm-cm, indicating its effectiveness in resisting electrical conductivity.

Excellent Resistance To: EPDM rubber excels in resisting oxidizing chemicals, ozone, and weathering, making it suitable for outdoor applications.

Good Resistance To: EPDM offers good resistance to alkalis and acids.

Limited Resistance To: While generally resistant to many chemicals, EPDM has limited resistance to petroleum-based fluids.

EPDM rubber exhibits outstanding resistance to outdoor weathering, UV exposure, and ozone, ensuring durability in various environmental conditions. EPDM rubber is known for its excellent resistance to water and steam, making it suitable for applications involving exposure to moisture. EPDM rubber maintains its resilience and sealing properties even after multiple compression and relaxation cycles, ensuring long-term performance.

Application Areas:

Seals and Gaskets: EPDM is widely used in automotive, construction, and industrial applications for its sealing properties.

Roofing Materials: EPDM is a common choice for roofing membranes due to its weather resistance.

HVAC Systems: EPDM finds applications in gaskets and seals for heating, ventilation, and air conditioning systems.

Electrical Insulation: The dielectric properties of EPDM make it suitable for various electrical insulation applications.

EPDM rubber is available in various forms, including sheets, strips, cords, and molded components. Manufacturers can formulate custom blends to meet specific requirements.

Chemical Structure: Polymerized chloroprene.

Density: Typically ranges from 1.23 to 1.58 g/cm³.

Hardness: Shore A 40 to 90.

Tensile Strength: Varies from 5 MPa to 30 MPa depending on the grade.

Elongation at Break: Typically, 300% to 700%.

Tear Strength: Generally high, providing resistance to tearing forces.

Temperature Range: Exhibits stability in a wide temperature range, approximately -40°C to 121°C (-40°F to 250°F).

Excellent Resistance To: Ozone, weathering, aging.

Good Resistance To: Moderate resistance to oils, chemicals, and fuels.

Limited Resistance To: Strong acids and bases.

Good resistance to outdoor weathering and UV exposure.

Excellent resistance to water and steam. Suitable for underwater applications.

Maintains elasticity and compression set resistance over time.

Shows excellent resistance to aging, ensuring a longer service life.

Self-extinguishing. Good resistance to flames.

Chemical Structure: Copolymer of butadiene and acrylonitrile.

Density: Typically ranges from 0.90 to 1.50 g/cm³.

Hardness: Shore A 40 to 100.

Tensile Strength: Varies from 5 MPa to 30 MPa depending on the grade.

Elongation at Break: Typically, 200% to 600%.

Tear Strength: Exhibits good tear resistance.

Temperature Range: Generally stable in a temperature range of -30°C to 120°C (-22°F to 248°F).

Thermal Conductivity: Low thermal conductivity.

Dielectric Strength: Moderate to high dielectric strength.

Volume Resistivity: Typically, moderate.

Excellent Resistance To: Oils, fuels, greases, hydraulic fluids.

Good Resistance To: Moderate resistance to acids and bases.

Moderate resistance to weathering and UV exposure.

Limited Resistance To: Ketones, strong acids, and ozone.

Excellent resistance to water and steam. Suitable for applications with water contact.

Maintains resilience and compression set resistance over time.

Shows good resistance to aging, ensuring durability.

Generally self-extinguishing. Exhibits good flame resistance**.**

Oil Seals and Gaskets: Nitrile rubber is widely used for its excellent oil resistance.

Automotive Industry: Commonly used in hoses, seals, and gaskets in automotive applications.

Medical Industry: Nitrile is used in medical gloves due to its resistance to oils and chemicals.

Industrial Seals: Nitrile is suitable for various industrial sealing applications.

Hydraulic and Pneumatic Systems: Nitrile seals are utilized in hydraulic and pneumatic systems.

Chemical Structure: Copolymer of hexafluoropropylene (HFP) and vinylidene fluoride (VDF).

Density: Typically ranges from 1.8 to 2.0 g/cm³.

Hardness: Shore A 60 to 90.

Tensile Strength: Typically, 10 MPa to 20 MPa.

Elongation at Break: Typically, 150% to 300%.

Tear Strength: Exhibits good tear resistance.

Temperature Range: Can withstand temperatures from -20°C to 200°C (-4°F to 392°F).

Thermal Conductivity: Low thermal conductivity.

Excellent Resistance To: Many chemicals, oils, fuels, acids, bases, solvents.

Good Resistance To: Steam, ozone, weathering.

Limited Resistance To: Ketones.

Excellent resistance to weathering and UV exposure.

Good resistance to water and steam.

Maintains excellent resilience and compression set resistance over time.

Aerospace and Defense: Seals, gaskets, O-rings in critical applications.

Chemical Processing: Used in equipment exposed to harsh chemicals.

Automotive: Seals and gaskets in engines and fuel systems.

Oil and Gas Industry: Viton is suitable for applications involving oil and fuel exposure.

Electronics: Viton is used in electronic components requiring chemical resistance.

Different Grades: Viton rubber is available in various grades, including A, B, F, and GF grades with different levels of fluor elastomer content.

Forms: Sheets, rolls, strips, O-rings, and custom-molded components.

Chemical Structure: Copolymer of butadiene and acrylonitrile.

Density: Typically ranges from 0.90 to 1.20 g/cm³.

Hardness: Shore A 40 to 90.

Tensile Strength: Varies from 14 MPa to 31 MPa depending on the grade.

Elongation at Break: Typically, 200% to 600%.

Tear Strength: Exhibits good tear resistance.

Temperature Range: Generally stable in a temperature range of -30°C to 120°C (-22°F to 248°F).

Thermal Conductivity: Low thermal conductivity.

Excellent Resistance To: Oils, fuels, greases, hydraulic fluids.

Good Resistance To: Moderate resistance to acids and bases.

Limited Resistance To: Ketones, strong acids, and ozone.

Moderate resistance to weathering and UV exposure.

Oil Seals and Gaskets: Buna-N rubber is widely used for its excellent oil resistance.

Automotive Industry: Commonly used in hoses, seals, and gaskets in automotive applications.

Industrial Seals: Suitable for various industrial sealing applications.

Hydraulic and Pneumatic Systems: Buna-N seals are utilized in hydraulic and pneumatic systems.

Fuel Systems: Buna-N is commonly used in components exposed to fuel.

Chemical Structure: Polymer composed of urethane links.

Density: Typically ranges from 1.0 to 1.25 g/cm³.

Hardness: Shore A 20 to 95.

Tensile Strength: Varies widely depending on the formulation, typically from 20 MPa to 60 MPa.

Elongation at Break: Generally high, ranging from 100% to 600%.

Tear Strength: Exhibits excellent tear resistance.

Temperature Range: PU rubber can withstand a broad temperature range, typically from -40°C to 80°C (-40°F to 176°F).

Thermal Conductivity: Low thermal conductivity.

Dielectric Strength: Typically moderate.

Volume Resistivity: Varies depending on the formulation.

Excellent Resistance To: Abrasion, oils, greases, hydrolysis.

Good Resistance To: Some solvents and chemicals.

Limited Resistance To: Strong acids and bases.

Application Areas:

Rollers and Wheels: PU is widely used for its high load-bearing capacity and abrasion resistance in roller and wheel applications.

Seals and Gaskets: Suitable for various sealing applications due to its flexibility and resilience.

Industrial Belts: PU is used in the manufacturing of conveyor belts and power transmission belts.

Automotive Components: PU is utilized in suspension components, bushings, and other automotive parts.

Mining and Construction: PU is employed in various heavy-duty applications due to its toughness.

Chemical Structure: Polysiloxane polymer.

Density: Typically ranges from 1.1 to 1.4 g/cm³.

Hardness: Shore A 10 to 80.

Tensile Strength: Varies from 5 MPa to 12 MPa depending on the formulation.

Elongation at Break: Typically high, ranging from 100% to 700%.

Tear Strength: Exhibits good tear resistance.

Temperature Range: Silicone rubber is known for its broad temperature resistance, typically from -60°C to 230°C (-76°F to 446°F).

Thermal Conductivity: Low thermal conductivity.

Dielectric Strength: Excellent dielectric properties.

Volume Resistivity: Generally high.

Excellent Resistance To: Ozone, UV, weathering, water.

Good Resistance To: Some acids and bases.

Limited Resistance To: Solvents and fuels.

Varies: Standard silicone rubber is not inherently flame-resistant, but flame-retardant formulations are available.

Application Areas:

Medical Devices: Silicone rubber is widely used in medical applications due to its biocompatibility.

Electronics: Silicone is used for electrical insulation and sealing in electronic components.

Kitchenware: Silicone is used in the manufacturing of baking mats, utensils, and other kitchen tools.

Automotive: Silicone rubber is utilized in gaskets, seals, and various automotive components.

Construction: Silicone is used for weatherstripping, sealants, and architectural applications.

Different Hardness and Grades: Silicone rubber is available in various hardness levels and grades.

Additives: Formulations can be modified with additives for specific performance enhancements.