RUBBERS
EPDM
GENERAL PROPERTIES
INDICATIONS OF USE
- Shore A hardness from 25 to 90
- Minimum operating temperature -20° C
- Maximum operating temperature + 130° C
PHYSICAL-MECHANICAL PROPERTIES
- Good to excellent mechanical properties (tensile strength, elongation, tear resistance)
- Good resistance to permanent deformation
- Good resistance to abrasion
OTHER CHARACTERISTICS
- Poor resistance to fire
- Excellent dielectric properties
- High resistance to UV radiation
CHEMICAL BEHAVIOUR
More than satisfactory with:
- Water and steam up to 130°C, sea water, salt solutions, strong mineral bases and their solutions.
- Alcohols, ketones and other oxygenated solvents.
- Ozone and atmospheric agents.
Satisfactory with:
- Strong mineral acids and their solutions
- Vegetable or animal oils and fats
- Hydraulic fluids based on phosphoric esters.
Unsatisfactory with:
- Mineral oils and fats
- Aliphatic, aromatic and chlorinated hydrocarbons
- Hydraulic fluids based on silicone esters
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PECULIARITY
Absolute resistance to oxidation, atmospheric agents, ultraviolet radiation, ozone and high temperatures.
RUBBERS
CR / NEOPRENE
GENERAL PROPERTIES
INDICATIONS OF USE
- Shore A hardness from 20 to 90
- Minimum working temperature -20° C
- Maximum operating temperature + 85° C
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PHYSICAL-MECHANICAL PROPERTIES
- Good to excellent mechanical properties (tensile strength, elongation, tear resistance)
- Good resistance to permanent deformation
- Excellent resistance to abrasion
OTHER CHARACTERISTICS
- Excellent resistance to fire. Possible self-extinguishing properties
- Good dielectric properties
- Very good resistance to UV radiation
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CHEMICAL BEHAVIOUR
Satisfactory with
- sea water, saline solutions with specific formulation
- various animal and vegetable oils and fats (excluding castor oil)
- Hydraulic fluids based on silicone esters
- Atmospheric agents
- Non-oxidising acid solutions
- Medium-high concentration alkalis
Relatively satisfactory with:
- Mineral oils with medium to high aniline content
- Aliphatic hydrocarbons with specific formulation
- Ozone
- Water up to 100°C with specific formulation
Unsatisfactory with:
- Medium to high concentration mineral acids
- Aromatic and chlorinated hydrocarbons
- Phenol
- Synthetic lubricants based on diesters,
PECULIARITY
Excellent combination of satisfactory physical and chemical properties
Various range of application.
RUBBERS
NBR
GENERAL PROPERTIES
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INDICATIONS OF USE
- Shore A hardness from 30 to 90
- Minimum operating temperature -20° C
- Maximum operating temperature + 110° C
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PHYSICAL-MECHANICAL PROPERTIES
- very good to excellent mechanical properties (tensile strength, elongation, tear strength)
- Good resistance to permanent deformation
- Good resistance to abrasion
​
OTHER CHARACTERISTICS
- Poor resistance to fire
- Poor dielectric properties
- Poor resistance to UV radiation
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CHEMICAL BEHAVIOUR
More than satisfactory with:
- Mineral, vegetable and animal oils and fats
- Sea water and saline solutions
- Aliphatic hydrocarbons and fuels
Satisfactory with:
- Concentrated alkaline solutions
- Oil-based hydraulic fluids to silicone esters
- Alcohols (except benzyl)
Unsatisfactory with:
- Benzene and chlorinated hydrocarbons
- Ozone and atmospheric agents
- Phenol
- Hydraulic fluids based on phosphoric esters
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PECULIARITY
Resistance to oil
Possibility of compounds intended for contact with foodstuffs