Zootechnics
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Bentivogli produces gaskets for zootechnical applications, such as butterfly valves made from FDA-certified nitrile compound for the food industry.
Some of our finished products
Products
Materials table
| Chemical terminology | Acronym | Trade name | Characteristics | Operating temperature | Shore A hardness | Application | Chemical resistance |
|---|---|---|---|---|---|---|---|
| Natural rubber | NR | Natural rubber | Excellent physical-mechanical properties. Very good elastic performance. Outstanding abrasion resistance. | - 70°C ÷ + 80°C | 22 SH ÷ 90 SH | Seals, membranes, belts, buffers, rollers, wheels, bellows, suction cups, sleeves, etc. | Moderate resistance to seawater and mediumconcentration acids. |
| Styrene-Butadiene Copolymer | SBR | styrene | Good physical-mechanical properties. Good abrasion resistance. Good resistance to permanent deformation. | - 40°C ÷ + 100°C | 42 SH ÷ 92 SH | Seals, buffers, belts, sleeves, etc. | Good resistance to certain types of freon, glycols, and brake fluids. |
| Acrylonitrile-Butadiene Copolymer (NBR) | NBR | Nitrile or oil-resistant | Good resistance to oils. Good physical-mechanical properties. From good to excellent impermeability to air and gases. | - 40°C ÷ + 130°C | 30 SH ÷ 80 SH | Oil seals, gaskets, bellows, rollers, bushings, membranes, valves, suction cups, etc. | Good resistance to oils, mineral, vegetable, and animal fats, hydrocarbons, and gases. |
| Acrylonitrile Butadiene Copolymer (NBR) | NBR | Conductive nitrile | Good resistance to oils. Good physical-mechanical properties. From good to excellent impermeability to air and gases. | - 30°C ÷ + 170°C | 50 SH ÷ 90 SH | Cleaning machinery (floor scrubbers, pressure washers, etc.), automotive drive belts, flexible hoses, O-rings, oil seals, gaskets, V-belts, roller coverings, and cables. | Good resistance to oils, mineral, vegetable, and animal fats, hydrocarbons, and gases. |
| Hydrogenated Acrylonitrile Butadiene | HNBR | Therban | Excellent physical-mechanical properties. Outstanding resistance at temperatures up to 150 °C. Extremely high resistance to permanent deformation and abrasion. | - 40°C ÷ + 150°C | 40 SH ÷ 90 SH | Automotive sector, HVAC sector (Heating, Ventilation, and Air Conditioning) | Excellent resistance to oils, mineral, vegetable, and animal fats, hydrocarbons, gases, and certain types of freon. |
| Polychloroprene | CR | neoprene | Good resistance to ozone and seawater. Good flame resistance and possible self-extinguishing properties. Good resistance to animal and vegetable fats. | - 20°C ÷ + 120°C | 40 SH ÷ 85 SH | Hoses, membranes, gaskets, bridge and construction supports, suction cups, etc. | Good resistance to fats, ozone, sunlight, weathering, flames, and various types of freon. |
| Ethylene Propylene Copolymer | EPM | dutral | Excellent resistance to heat, ozone, and high temperatures. High resistance to permanent deformation. Can only be vulcanized with peroxide. | - 90°C ÷ + 140°C | 40 SH ÷ 90 SH | Gaskets and seals for construction, expansion joints for bridges and viaducts, sleeves, etc. | Good resistance to water and glycols, to chemical agents, and to oxidation. Excellent resistance to steam up to 150 °C. |
| Ethylene Propylene Diene Terpolymer | EPDM | Terpolymer | Excellent resistance to heat, ozone, and high temperatures. High resistance to permanent deformation. Excellent resistance to water and steam up to 150 °C. | - 80°C ÷ + 150°C | 40 SH ÷ 90 SH | Gaskets and seals for construction, expansion joints for bridges and viaducts, sleeves, printing pads, printing rollers, etc. | Good resistance to water and glycols, to chemical agents, and to oxidation. Excellent resistance to steam up to 150 °C. |
| Polydimethylsiloxane | FVMQ | fluorosilicone | Characteristics very similar to those of silicone but with superior chemical resistance to lubricating oils such as M15, etc. | - 50°C ÷ + 300°C | 30 SH ÷ 80 SH | Highly specialized products for the mechanical, chemical, pharmaceutical industries, etc.; gaskets for oil or gas burners, gaskets for containers of solid or liquid foods, keypads for electronic machines. | Good resistance to aliphatic hydrocarbons, aromatic hydrocarbons, mineral oils, ozone, and UV rays. Fair resistance to gasoline. |
| Polydimethylsiloxane (PDMS) | VMQ | silicone | Insensitivity to thermal variations. Excellent electrical insulation, with appropriate production processes: non-toxicity and the possibility of achieving electrical and thermal conductivity grades. | - 60°C ÷ + 200°C | 30 SH ÷ 80 SH | Gaskets for solid and liquid food containers, covers for control panels, special series for high temperatures up to 300°C, etc. | Good resistance to water and aqueous solutions, exposure to atmospheric agents, ozone, and UV rays, as well as to vegetable, animal oils, and glycols. |
| Fluoroelastomer | FPM/FKM | Tetrafluoroethylene - hexafluoropropylene | Excellent resistance to chemical agents, lubricants, heat, and flame; exceptional performance against permanent deformation (compression set). Outstanding behavior in ozone and UV radiation. | - 20°C ÷ + 280°C | 55 SH ÷ 80 SH | Highly specialized items for the mechanical, chemical, pharmaceutical, and other industries. | Specific chemical agents for which excellent resistance is ensured across a wide range of temperatures include: aliphatic, chlorinated, and aromatic hydrocarbons; fuels; mineral and vegetable oils and fats; and hydraulic fluids in general. |
| Polyurethanes | PU | vulkollan - adiprene - urepan | Exceptional resistance to abrasion and tearing. Excellent mechanical properties (tensile strength and elongation). Good impermeability to air, many gases, and oils. | - 30°C ÷ + 100°C | 60 SH ÷100 SH | Coatings for rollers, wheels, pulleys, etc. | Good resistance to hydrolysis, saline solutions, and seawater. |
| Polyepichlorohydrin | CO | herclor | Good resistance to ozone and seawater. Good flame resistance and possible self-extinguishing properties. Good resistance to animal and vegetable fats. | - 40°C ÷ + 160°C | 30 SH ÷ 80 SH | Seals for washing machines, refrigerators, cars, etc. | Good resistance to oils, mineral, vegetable, and animal fats, as well as glycols. |
| Ethylene-acrylate | AEM o EAM | Vamac | Excellent air and gas impermeability. Low elastic yield. Outstanding resistance to oils up to 170 °C and to heat. Low values of permanent deformation even at high temperatures. | - 40°C ÷ + 180-200°C | 50 SH ÷ 80 SH | Radiator sleeves for engines, O-rings, shaft seals, precision-molded parts, rubber-metal co-molded components (vibration dampers, buffers, strips, etc.). | Excellent resistance to aliphatic oils, oxygen, ozone, weathering agents, and heat. Resistance to high temperatures. |