NITRIL (NBR)
It’s suggested for most of the applications of permeability elements and is commonly used .Nitril is a butadiene-acrylo nitrile (ACN) polymer .The mixtures used in Nitril rubers changes mineral oils, volume change in Grease and fuel, gas permeability ,elasticity and compression set .They show resistant in Alifatic hydro carbons (propan-butan-petrol) mineral oils ,oiling oils , group H,HL,HLP type oils and Grease ,HFA,HFB,HFC, vegetable and animal fat ,slite heat and diesel fuel. They can be mixed for fuels and industry liquids. It suggested to use the standart nitril mixture -30 +105 degree .Sometimes it maybe increased in short interval operations up to + 120 degree.
HNBR
It’s a kind of elastomer by hydrogenic the whole or or a part of HNBR Polymere with double polyvalent butadiene.It suggested to use the HNBR which has high mechanical value compared with standart HNBR at -30 + 150 degree .
Silicone
Silicone preserves its fexibility between -60 200 degrees celcius. Its not suggested in dinamic applications.It has a good resistance against Ozone Air and oil .It has weak resistance against Oxided oil and some hipoit and E.P.Type oils.
Viton (FKM Flourel)
Viton is resistant to old type of Grease oil and solvent -30-225 degree celcius. It has a good resistant against many chemicals. It results in vacuum systems when its asked for slite gas permeability.
Neopren(CR)
It hasa very good resistance in rupture ,tear and abrasion.It resists against flames .It has a good resistance in high valued mineral oils,silicone oils,Grease and alcohol.Its used in places in which resistance is needed both for oil and atmospheric circumstances.
Polyurethane (PU)
It has got a wonderful endurance against rubture ,tear and abration in -30 and 100 .It is resistant against air and Ozone and also to mineral oils ,Grease and alifatic hydro carbons.Its e specially used as high preasure permeability element and spindle graser.
ETHYLENE PROPYLENE RUBBER (EPDM)ı
It’s used between-40 and 145 degre celcius.It has a very good resistance against Phosfate ,ester liquid, automotive break oils and steam.
SITREN BUTADİEN RUBBER (SBR)
It has a good resistance against glikole based break oils,in organic asist bases and alcohol -50 and 100 degree celcius.
NATUREL RUBBER
Its used in-60 and 100 degrees celcius and is recommended where high flexibility is needed.
POLYACETAL (POM)
Its a general bearing material in hydrolic pneumatic systems.Its calybration stabilization is very good up to 80 degrees.One of its important feature is very low water absorvation.