Group R - Thermoplastic polymers, elastomers and additives

Excellent mechanical properties, excellent resistance to abrasion, tearing and fatigue. Excellent resistance to UV radiation, ozone, oxygen, atmospheric agents, hot aging (but hardens due to prolonged heat in the presence of oxygen). Excellent resistance to seawater, salts, bases and diluted acids. Good flame resistance with self-extinguishing properties. Discrete or deficient dielectric properties, moderate resistance at low temperatures, high impermeability to many gases. Good resistance to minerals, silicone, animal and vegetable oils, aliphatic hydrocarbons and cooling fluids. It is not compatible with concentrated acids, aromatic and chlorinated hydrocarbons, polar solvents, ketones, esters and ethers, phenols, liquids of the HDF group. It is not possible to produce non-toxic items. Hardness 20 ÷ 90 Sh. Working temperature -20 +100 ° C (with peaks of 120 ° C). Glass transition temperature - 50ºC. Chloroprene tends to harden over time (especially at low temperatures), this is because it does form crystals in its macromolecules.

Very dense molecular structure, which guarantees a very high watertightness to air and water and to most gases. Perfect osmosis seal Good resistance to breakage and abrasion but low elastic performance. Good dielectric properties, excellent resistance to UV radiation, ozone, atmospheric agents, heat without flame resistance. Good compatibility with hot water, steam at 120 ° C, saline solutions, alkalis including medium / high concentration acids, hypochlorites, alcohols, ketones, glycols, vegetable and animal oils and fats. enough satisfactory compatibility with different ethers and esters, different types of Freon. It is not compatible with petroleum products in general, mineral oils and greases, aliphatic, aromatic and chlorinated hydrocarbons, non-polar fluids, synthetic lubricants based on ester. With the IIR it is possible to produce non-toxic articles. Hardness 40 ÷ 80 Sh. Working temperature -30 +110 ° C (-50 ° C +130/150 ° C with an optimal formulation).

Characteristics: Exceptional mechanical value frame, exceptional resistance to abrasion, high resistance to permanent deformation (compression set), good aging and behavior at high temperatures. Chemical resistance to fats and mineral, animal, vegetable, silicone, hydraulic, aliphatic and aromatic hydrocarbons, chlorinated, polar solvents, oxygen, ozone, water, steam, gas, freon and their substitutes. It is possible to produce non-toxic items. Hardness 50 ÷ 90 Sh. Working temperature -40 +150 ° C.

Good mechanical properties, low permanent deformation and good gas impermeability. Remarkable chemical resistance due to its saturated polymer chain. Excellent resistance in the presence of gas (methane, LPG, butane, propane). Good resistance to oils, minerals, animals, vegetables, silicon, hydraulic H, HL, H-LP, aliphatic hydrocarbons, non-polar solvents, non-flammable liquids HFA, HFB, HFC, hot water and saline solutions, fatty acids, acids and bases diluted. Good resistance to heat and aging (early age in hot air), low resistance to flames. Poor resistance to UV radiation, ozone and atmospheric agents, poor dielectric properties. It is not compatible with aromatic and chlorinated hydrocarbons, ketones, esters, phenols, polar solvents and concentrated acids. It can be non-toxic. Hardness 30 ÷ 95 Sh. Working temperature -40/30 +120 ° C (+100 ° C in air). To ensure greater durability of the NBR parts, it is recommended to avoid direct contact with air, using it in immersion applications or maintaining a protective layer of lubricating oil.