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CR

Name:

Polychloroprene

Temperature:

Constant: -40°C / +100°C

Application:

For situations that envisage coolants, ozone, ammonia and diluted hydrocarbons. Resistant to atmospheric agents and to seawater. Poor resistance to mineral oils, but good resistance to extinguishing agents.

EPDM

Name:

Ethylene Propylene

Temperature:

In air: -40°C / +115°C (with peaks of 120°C); for peroxide vulcanization: -50°C / +150°C (with peaks of 170°C);
In water: -30°C / +98°C (before reaching boiling point); for peroxide vulcanization: -40°C / +130°C

Application:

Used in contact with hot and cold water, air, atmospheric agents, ozone, saline solutions, diluted acids, hydraulic- and car-brake fluids, detergents, phosphate esters, acetates, ketones, aldehydes, alcohols, glycols and amines. Never to be used with hydrocarbons, mineral oils and greases, halogenated solvents, aliphatic and aromatic hydrocarbons, mineral-base fluids and lubricants.

FPM/FKM

Name:

Fluorocarbon

Temperature:

Constant: -15°C / +250°C

Application:

Resistant to aliphatic and halogenated hydrocarbons, aromatic solvents and ester-base hydraulic fluids, atmospheric agents and ozone, methane and LPG, mineral oils and greases. It has poor resistance to low temperatures, but exceptional resistance to high ones, even when aggressive hydrocarbons are present. It has no resistance to ketones, aldehydes, esters with low molecular weight, nitrogen compounds, strong acids, hot water with vapour, brake fluids and ammonia.

FVMQ

Name:

Fluorosilicone

Temperature:

Constant: -50°C / +220°C

Application:

Normally used in extreme conditions, and in the aerospace and chemical industries. It behaves well at both low and high temperatures, with oils and hydraulic fluids. Low chemical properties.

HNBR

Name:

Hydrogenated Nitrile

Temperature:

Constant. Standard formulations: -20°C / +150°C

Special formulations: -40°C / +150°C

Application:

Normally used in the hydraulics and pneumatics industries. Compatible with mineral oils and coolant gases. Low gas and vapour permeability. Compared with NBR, it resists higher running temperatures and is more resistant to chemicals. Resistant to ozone and diluted acids, but not to ketones, esters, aldehydes, aromatic and halogenated hydrocarbons, amines and strong acids

NBR

Name:

Acrylonitrile Butadiene

Temperature:

Constant. Standard formulations -25°C / +110°C; Special formulations -45°C / + 100°C

Application:

Normally used in the hydraulics, pneumatics and oil-hydraulics industries. Resistant to fluids and mineral oils, petroleum-based hydraulic fluids, mineral, vegetable and animal fats, aliphatic hydrocarbons, combustible oils, diesel, kerosene, gas, methane, butane and propane. Compatible with water glycols and water and oil emulsions. Non-resistant to strong acids, aldehydes, ketones, amines, esters, aromatic hydrocarbons, brake fluids, halogenated solvents.