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GOMME
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

 

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

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

 

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

INDICATIONS OF USE

- Shore A hardness from 30 to 90

- Minimum operating temperature -20° C

- Maximum operating temperature + 110° C

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

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

 

PECULIARITY

Resistance to oil

Possibility of compounds intended for contact with foodstuffs

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