CORK , PAPER & FELTS

Cork-Elastomer Jointings are suitable for many fluid sealing applications in the automotive, engineering and electrical industries. Cork-Rubber products hold up well under external environmental conditions and have the advantage of minimal side flow compared to most rubber materials and generally possess better load distribution across the sealing faces.

Cork and paper & felts

The majority of grades available utilise either Nitrile or Neoprene as the blended rubber binder; other blends, such as Silicone and cross blends are available for specific process duties and cover obligatory industry specifications. Our sales office will appropriately recommend the most effective material where such specifications are requested.

Most grades retain flexibility down to -25 Deg C and can withstand maximum operating temperatures in liquids up to 110 Deg C. The ‘Chemical Suitability Guide’ below is intended only as a guide as the possible effect of elevated temperatures needs to be considered when determining the compatibility of these products with a given chemical

Air, Water, Water/Glycol Nitrile or Neoprene bonded Cork
Alcohols Nitrile or Neoprene bonded Cork
Fuel & Diesel Oil Nitrile or Neoprene bonded Cork
Lubricating Oil – Mineral Nitrile or Neoprene bonded Cork
Lubricating Oil – Synthetic Nitrile bonded Cork
Hydraulic Oil – Mineral Nitrile or Neoprene bonded Cork
Water/Oil Emulsion Special Blend – Nitrile/Neoprene/Butyl bonded Cork

OP (Oil & Petrol) Paper Jointing is an economical cellulose fibre-based material
impregnated with a glue glycerine composition, or plasticised gelatine depending on the grade.
It is predominantly used in the automotive industry as a gasket material for carburettors, fuel and
oil pumps, gear casings and pipeline flanges. It has excellent resistance to fuels, oils and most organic solvents and is ideal for use at low bolt loadings.

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It has a maximum operating pressure of 8 to 10bar (depending on grade) and an operating temperature range of -20 Deg C to 120 Deg C; limits of pressure and temperature should not be used simultaneously and are dependant on the thickness of the gasket. Supplied in either sheet/roll or precision cut gaskets (maximum 1m wide) from 0.15mm, 0.25mm, 0.4mm, 0.5mm, 0.8mm, 1mm, 1.2mm, 1.6mm, 2mm or 3.2mm thick.

Engineering Felt is available in varying thicknesses, hardness and densities in both woollen and synthetic grades. It can be supplied in sheet, strip or cut shapes for anti-vibration, sound & shock absorption, dust seals, oil seals, wipers, polishing pads/wheels, filters and gaskets. Wool felts are used for wiping because their non-fray homogeneousstructure maintains constant performance during wear life and they can carry a liquid layer and distribute it evenly.

They are used for polishing because they are tough and resilient, wearing in such a way that the working surface is constantly renewed. Because of their homogeneous structure wool felts make excellent filter media accommodatinghigh flow rates whilst offering good particle collection efficiencies. Long lasting resiliency under load offers application suitability, in vibration isolators, padding & cushioning, shock absorption and gaskets.

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