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.
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 -25OC and can withstand maximum operating temperatures in liquids up to 110OC. 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.
Requirement    Recommended Material
Air, Water, Water/Glycol    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.