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JACOB TUBING SYSTEMS
Gasket Material Properties
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 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
Color: grey white for 1mm, grey for 2mm
Temperature resistance: -22°F to 212°F (-30°C 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
Color: beige
Temperature resistance: -76°F to 482F (-60°C to 250°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
Color: black
Temperature resistance: -4°F to 248°F (-20°C 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)
Color: brown red
Temperature resistance: 5°F to 248°F (-15°C to 120°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.

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