Click on the icon on the left to do the best printing
NBR
CHARACTERISTICS OF THE BASE ELASTOMERS:
CURRENT NAME: Nitrile Rubber NBR
TRADE NAME: Perbunan N, Europrene N.
It's a butadiene-acrilonitrile copolyimer, the ACN percentage can vary from 18% to 50%.

CHARACTERISTICS
• Good mechanical properties
• Good resistance to permanent deformation for compression (compression-set)
• Good impermeability to air and gases
• Easy coloured
• Limited resistance to UV rays
• Limited dieletctric properties
• No resistance to fuel

MATERIALS HARDNESS Shore A Lowest tensile strenght N/mm2 Elongation at breakage Permanent deformation to compression in air according to DIN 53517
24 h (+100 °C) 24h (+120 °C) 		Working temperature
°C 		Temperature
for continuous fragility increase
°C ASTM D 746
NBR 60 155,0 300 ≤ 15 ≤ 20 95 – 40
NBR 70 145,0 250 ≤ 15 ≤ 20 95 – 40
NBR 80 15,0 200 ≤ 15 ≤ 20 95 – 40

COMPATIBILITY AND CHEMICAL BEHAVIOUR
• Good resistance:
– Oils and mineral fats
– Light combustible oils, diesel oil
– Aliphatic hydrocarbons
– Oils and animal and vegetal fats
– Hot water (+ 100 °C), sea water,saline solutions

• Medium resistance:
– Fuels rich in aromatics
– Some types of Freon
– Acid dilute solutions
– Hydraulic fluids with petroleum base
– Syntetic lubricants with diesters base

•Low resistance:
– Benzene and chlorinated hydrocarbons
– Aromatic hydrocarbons (benzol)
– Hydraulic fluids with phosphoric esters base
– Different liquids for brakes with a glycol base

– It's possible to make mixtures with specific formula in order to optimize their chimical-physical characteristics to improve the performance in heavy uses.
– We make mixtures to use in contact with food.
 Click on the icon on the left to do the best printing