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Materials

FKM, which stands for Fluoroelastomer, is a synthetic fluorocarbon-based elastomer known for its exceptional chemical, thermal and ageing resistance. These properties make it ideal for applications in harsh environments where long life and reliability is required.

Technical characteristics

  • Temperature range: -30 °C to +250 °C, with some specific grades down to -40°C
  • Very high compatibility with all types of fuels.
  • High resistance to solvents, oils, acids and bases, both organic and inorganic.
  • Low gas permeability.
  • Excellent flame resistance.

Areas of application

Common applications

Static and dynamic oil- and fuel-resistant seals, high-performance O-rings for aggressive chemical environments, rotary shaft seals in engines and pumps, internal linings for chemical pipes and tanks, valve and fitting components in high-temperature environments, seals for compressors and turbines, seals for exhaust systems and transmission systems, seals in contact with aromatic fuels and hydrocarbon mixtures, sealing elements for oil wells and pipelines, seals for aviation fuel tanks, components for reactors and industrial chemical plants, seals for steam systems and high-pressure fluids, seals for vacuum or rarefied atmosphere applications, seals for heat exchangers and chemical centrifuges, ozone and thermal ageing resistant seals

NBR (Nitrile Butadiene Rubber) is a synthetic elastomer composed of acrylonitrile and butadiene copolymers. It is well known for its excellent resistance to mineral oils, aliphatic hydrocarbons, and various chemicals, making it widely used in industrial and automotive environments.

Technical Characteristics

  • Operating temperature: from –25 °C to +120 °C, with peaks up to +150 °C for special formulations.
  • Good resistance to mineral oils, aliphatic fuels, greases, and hydraulic fluids (type H).
  • Poor resistance to weathering, ozone, and UV radiation.
  • Good mechanical properties and abrasion resistance.

Application Fields

Typical Applications

Seals and O-rings for hydraulic and pneumatic systems, fuel and oil hoses, valve diaphragms, industrial protective gloves, compressor gaskets, oil seals, roller and cable coatings, oil-resistant electric cables, anti-slip industrial footwear, anti-vibration elements for machinery.

HNBR is a hydrogenated version of NBR rubber, obtained by selectively saturating the double bonds in the butadiene component. This process significantly improves resistance to heat, ozone, and chemicals, making it suitable for highly demanding environments. Excellent abrasion resistance and good resistance to permanent deformation

Technical Characteristics

  • Operating temperature: from –40 °C to +150 °C, with short peaks up to +180 °C.
  • Excellent resistance to ozone, weathering, and heat.
  • High mechanical strength, abrasion, and tensile resistance.
  • Good compatibility with refrigerants (R134a, R1234yf) and synthetic oils.

Application Fields

Typical Applications

Seals and gaskets in compressors and A/C systems, O-rings for high-pressure hydraulic systems, oil seals for engines and transmissions, hose linings exposed to hydrocarbons and high temperatures, valve and pump components for chemical processing, gaskets for submersible pumps, flexible transmission elements in harsh chemical environments.

VMQ (Vinyl Methyl Silicone) rubber is a silicone elastomer known for its wide thermal window of use and excellent weathering, ozone and UV resistance. It is widely used in applications requiring thermal stability and flexibility. Used wherever high heat resistance and at the same time excellent elasticity at low temperatures is required.

Technical characteristics

  • Use temperature: -60 °C to +250 °C, with peaks up to +300 °C.
  • Very good resistance in water and aqueous solutions, vegetable and animal oils, glycols.
  • Good resistance to motor oils, aliphatic fuels, glycol-based brake fluids, highly flammable hydraulic fluids of the HFD-R and HFD-S group, high molecular weight chlorinated aromatic hydrocarbons.

Areas of application

Common applications

Hoses for food, chemical  farmaceutical or medical fluids, components for engines and plants exposed to heat and chemicals, gaskets for windows, doors and flaps, medical devices, oxygen and transfusion hoses, syringe caps, caps and gaskets for barrels, barriques, fillers and wine containers, electrical insulators and components for high-temperature appliances, masks and mouthpieces for diving, gaskets for ovens, washing machines, dishwashers and other household appliances, protective coatings for wiring and electronic devices

ACM (Polyacrylate Rubber) is an elastomer based on acrylic esters, designed to offer high resistance to hot oils and oxidation. It is favored where thermal stability and resistance to lubricants are critical requirements.

Technical Characteristics

  • Operating temperature: from –25 °C to +165 °C.
  • Excellent resistance to mineral and synthetic oils at high temperatures.
  • Poor resistance to moisture, acids, and oxygenated fuels.
  • Limited elasticity at low temperatures.

Application Fields

Typical Applications

Seals for automatic transmissions and gearboxes, oil seals in lubricated systems, O-rings in oil circuits of internal combustion engines, seals for scroll and rotary compressors, components for valves and pumps in medium-high thermal environments, seals for power steering and differentials.

AEM (Ethylene Acrylic Rubber) is a copolymer of ethylene and methyl acrylate, often formulated with a third component for vulcanization. Compared to ACM, it provides better low-temperature flexibility while maintaining good heat and oil resistance.

Technical Characteristics

  • Operating temperature: from –30 °C to +165 °C.
  • Good resistance to mineral oils, heat, ozone, and weathering.
  • Excellent dynamic behavior and flexibility at low temperatures.
  • Moderate resistance to fuels and polar solvents.

Application Fields

  • Automotive (air/oil and cooling systems)
  • Transportation
  • General mechanics

Typical Applications

Flexible hoses for air/oil systems in engines, gaskets for manifolds and turbo circuits, seals for cooling and ventilation systems, O-rings and oil seals for internal combustion engines, gaskets for heat exchangers, heat- and fluid-resistant anti-vibration components, flexible hoses for refrigerants and high-temperature oils.

FVMQ (Fluorosilicone Rubber) is an elastomer that combines the properties of silicone with enhanced chemical resistance, particularly to lubricating oils and fuels.

It is used in applications requiring resistance to low temperatures and aggressive fluids.

Better resistance to fuels, solvents and apolar oils, and low temperature properties than VMQ.

Technical characteristics

  • Use temperature: -55 °C to +200 °C, with peaks up to +250 °C.
  • Good resistance to aliphatic and aromatic hydrocarbons, mineral oils, ozone and UV radiation.
  • Fair resistance in petrols.

Areas of application

Common applications

O-rings for aeronautical fuels (Jet A, JP-8, AVGAS), seals for valves and hydraulic connections in aircraft engines, seals for pressurised cabins and cryogenic systems, elements for pneumatic actuators and avionic systems, static seals for fuel circuits, seals for injectors and high-pressure rails, rings and dust covers for pressure and temperature sensors.

Seals for dosing systems for solvents and aggressive fluids, seals in fine chemical production plants, components for vacuum laboratory equipment, seals for aggressive fluids in biotechnology. Seals for cryogenic environments, seals in precision instrumentation and optical devices, environments with ozone, UV radiation and corrosive vapours, seals in equipment for testing in extreme climatic chambers.

EPDM (Ethylene-Propylene-Diene Monomer) is a widely used synthetic elastomer due to its excellent resistance to weathering, ozone, steam and heat. Its properties make it ideal for outdoor applications and for components requiring electrical insulation and durability.

Technical characteristics

  • Use temperature: -40 °C to +150 °C in the presence of water and hot steam, without considerable degradation.
  • Good chemical and ageing resistance.
  • Excellent elasticity even at low temperatures.
  • Good insulating properties.

Areas of application

  • Automotive (door seals, windows, bonnet)
  • Household appliances (washing machines, dishwashers)
  • Electronics and electrical cables
  • Rubber hoses and fittings

Common applications

Door, window and bonnet seals in the automotive sector, spongy rubber profiles for luggage racks, hot water and steam hoses, seals for washing machines and dishwashers, insulating coatings for electrical cables, expansion joints for construction, seals for HVAC systems, seals for solar collectors and photovoltaic panels, pipes for plumbing and sanitary systems, membranes for water treatment systems, gaskets for irrigation systems, bumpers and anti-vibration components, gaskets for heat exchangers, linings for tanks and chemical containers, ozone and weather resistant gaskets.

CR rubber, also known as Neoprene, is an elastomer with a good balance of mechanical properties, chemical and weather resistance. It is one of the most versatile synthetic rubbers and is used in a wide range of industries.

Technical characteristics

  • Use temperature: from -45°C to +100°C, with brief peaks up to +120°C
  • Good resistance to water, aqueous solutions, paraffinic mineral oils and refrigerants.
  • Excellent outdoor behaviour due to ozone, ageing and flame resistance (self-extinguishing).

Areas of application

  • Corrosion and static seals
  • Coatings for cylinders and electrical cables
  • Rubberised fabrics and conveyor belts
  • Technical clothing (e.g. diving suits)

Common applications

Anti-corrosion seals for outdoor environments, coatings for industrial cylinders and rollers, protective covers for electrical cables, rubberized fabrics for technical clothing such as diving suits, conveyor belts for abrasive or oily materials, components for flame-retardant seals due to the self-extinguishing property, bumpers and anti-vibration mounts, gaskets for HVAC systems and ventilation ducts, sealing elements in refrigeration systems, gaskets for household appliances subject to moisture, coatings for metal tanks and containers, profiles for industrial doors and sectional overhead doors, waterproofing membranes for building and infrastructure use.

Styrene-Butadiene Rubber (SBR) is a synthetic elastomer used mainly for its good mechanical properties, low cost and wear stability. Despite limited chemical resistance, it is popular in applications where prolonged exposure to aggressive agents is not required.

Technical characteristics

  • Use temperature:  from -45°C to +100°C
  • Good insulating power (in well-formulated compounds).
  • High gas permeability, but still lower than natural rubber.
  • Low chemical resistance, not suitable for direct contact with oils or acids.

Areas of application

  • Automotive
  • Electronics
  • Household articles
  • Footwear industry
  • Conveyor belts, liners, cylinders

Common applications

Soles for technical and sports footwear, linings for electrical cables, gaskets for braking systems with glycol-based liquids, anti-vibration and anti-slip mats, industrial and civil flooring, conveyor belts for general materials, linings for cylinders and rollers, gaskets for household items, car interior components such as mats and heel pads, gaskets for lids and containers, insulating materials for electrical use in dry environments, play and sports articles, rubber bumpers and shock absorbers, moulded products for light industry, protective coatings for mechanical surfaces.

PVMQ rubber (Polyphenylvinylmethylsiloxane), also known as phenyl silicone, offers excellent resistance to both low and high temperatures.
It shows good resistance to water and steam, weathering, ozone, and UV radiation, as well as compatibility with sterilization methods and chemical resistance

Technical characteristics

  • Operating temperature: from -110°C up to +200°C, with peaks up to +250°C for special formulations
  • Good flexibility at low temperatures
  • Excellent ozone resistance
  • Chemical inertia, suitable for applications in the food and pharmaceutical industries
  • Good insulating properties

Common applications

  • Automotive
  • Aerospace
  • Chemical and pharmaceutical industry
  • Food industry
  • Electronics
  • Heating and cooling systems
  • Nuclear
  • General-purpose applications

 

In summary, PVMQ is a versatile and reliable material, ideal for a wide range of applications that require resistance to high temperatures, chemicals, weathering, and extreme conditions, along with excellent sealing and insulating properties.

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