Call us on 01694 722 841 Drop us a Line... 01694 722 841

Resistances

Consistency of U-shaped seals

Pull-ring connections with U-shaped seals when compared with pull-rings with sealant (mastic) are considerably tighter.

In order to withstand different chemical and thermal conditions, U-shaped seals are delivered in different rubber qualities.

The following consistencies are standard qualities. To find further information about these qualities, please refer to a detailed Elastomere-producer-data list.

NBR (Perbunan) Food quality with FDA-Approval
Colour: grey white for 1mm, grey for 2mm
Temperature resistance: -20 up to +100 °C
Suitable for: oil, fats, grease, petrol, petroleum, partially also against solvents
Less suitable for: steam, chlorinated carbohydrogens
SI (Silicone) Food quality due BGA Category IV
Colour: beige
Temperature resistance:  -60 up to +250 °C
Max. hot air resistance: +300 °C
Suitable for: many organic oils and greases, saline solutions, ozone, cool water, partially also against solvents, resistant against ageing and weather
Less suitable for: hot water, steam, acids, alkalies, mineral oil, fats and greases - diesel oil, benzol, petrol
EPDM (Keltan) electrostatic conductivity (conductive at powder coated steel, galvanized mild steel and stainless steel)
Food quality with FDA-Approval
Colour: black
Temperature resistance:  -30 up to +120 °C
Suitable for: water, steam, acids, alkalies, ozone, partial also against solvents like aceton or MEK, resistant against ageing and weather
Less suitable for: mineral oil, greases, fuels
FPM (Viton)  
Colour: brown red
Temperature resistance:  -18 up to +230 °C
Short time up to +250 °C
Suitable for: oil, grease, acids, alkalies, petrol, bencene, ozone, many solvents, very high resistance against chemicals, heat and ageing
Less suitable for: steam, detergents like acetone and MEK,

 U-shaped seals made of CR (Neoprene) and Teflon (PTFE) on request.