| Natural Rubber | |
| Good Mechanical Properties. Resistant to Water. Fair to good resistance to acids and alkalis. Poor resistance to oils petrol. Poor Resistance to Weathering. | 110 °C Max Temp. |
| Butyl | |
| Very good resistance to water, alkalis, many acids. Poor resistance to oils, petrol, and most solvents. | 150 °C Max Temp. |
| Nitrile | |
| Very good resistance to water. Fair resistance to alkalis, acids. Excellent resistance to oils and petrol. | 150 °C Max Temp. |
| Polysulphide | |
| Very good resistance to water. Good resistance to alkalis, fair resistance to acids. Excellent resistance to oils, petrol, aliphatic and aromatic hydrocarbon solvents . Poor mechanical Properties | 66°C Max Temp. |
| Neoprene | |
| Good resistance to water and alkalis, fair resistance to acids. good resistance to non-aromatic pertroleum, fatty oils, solvents (except aromatic, chlorinated or ketone types). Excellent mechanical Properties | 120°C Max Temp. |
| Acrylic | |
| Good heat resistance. Poor low temperature properties. Poor resistance to water, alkalis and some acids. Poor resistance to steam steam at high temperatures. Fair to good resistance to alkalis and acids. Good resistance to oils, petrol, aliphatic and aromatic hydrocarbon solvents | 230°C Max Temp. |
| Hypalon-Chlorosulphonated Polyethylene | |
| Good Mechanical properties Excellent resistance to oxidising chemicals, ozone weathering. .Relatively good resistance to oils and greas. Poor resistance to oils, petrol, aliphatic and aromatic hydrocarbon solvents | 230°C Max Temp. |
| Viton/Kel-F/Fluoroelastomer | |
| Good Mechanical properties Excellent resistance to ozone weathering. .Can be used at high temperatures with with many fuels, lubricants, hydraulic fluids, solvents. | 230°C Max Temp. |
| Asbestos Derivatives | |
| Large number of composites and combinations- Asbestos is not really acceptable for use in UK for health reasons | 600°C Max Temp. |
| Cork Composites | |
| Low Cost. Compressible allowing substantial deflection with negligible side flow. Will conform to irregular surfaces. High resistance to oils. Good resistance to water and many chemicals. Should not be used with inorganic acids and alkalis, oxidising solutions, live steam | 120°C Max Temp. |
| Cork Rubber | |
| Low Cost. Defined compressiblity. good fatigue resistance. Chemical resistance dependent on rubber used | 150°C Max Temp. |
| PTFE/Teflon/ PolyTetrfluoroethylene | |
| Excellent resistance to allmost all chemicals and solvents. Good heat resistance. Exceptional low temperature properties. Low compressibility. Low resilience tends to creep under stress. | 250°C Max Temp. |
| Filled PTFE/Teflon | |
| Improved mechanical properties - however filling material can impair chemical properties | up to 250°C Max Temp. |
| PTFE/Teflon composites(lined) | |
| Chemical properties comparable with virgin PTFE. Inner gasket material providing improved resiliance and deformability | up to 250°C Max Temp. |
| Polythene | |
| Resists most solvents- Poor heat properties | 70°C Max Temp. |
| Neoprene Impregenated wood fibre | |
| No porous - good for glycol, oil, and petrol | 80°C Max Temp. |
| SBR bonded Cotton | |
| Good Water resistance | 105°C Max Temp. |
| Nitrile Rubber - Cellulose fibre | |
| Oil Resistant up to reasonably high temperatures | 105°C Max Temp. |
| Inorganic Fibre | |
| Excellent heat properties - poor mechanical properties | 1000°C Max Temp. |
| Graphite /Carbon Fibre | |
| Excellent heat properties - Excellent chemical and mechanical properties based on product selected. | 1000°C Max Temp. |
| Felt-Pure | |
| Resilient, compressible, and strong but not impermeable. Resists medium strength mineral acids and dilute mineral solutions if not intermitently dried. Resists oils greases, waxes, most solvents. Damaged by alkalis. | - |
| Felt-PTFE Impregated | |
| Good chemical and heat resistance | 130°C Max Temp. |
| Lead | |
| Good general chemical resistance. Best conformity of all metals | 260°C Max Temp. |
| Tin | |
| Good resistance to neutral chemicals . Attacked by acids and alkalis | 260°C Max Temp. |
| Aluminium | |
| High corrosion resistance. Slightly attacked by strong acids and alkalis | 430°C Max Temp. |
| Copper & Brass | |
| Good corrosion resistance at moderate temperatures | 430°C Max Temp. |
| Nickel | |
| High corrosion resistance | 760°C Max Temp. |
| Monel | |
| High corrosion resistance. Good for use with wide range of acids and alkalis. Attacked by strong hydrochloric and oxidising acids. | 650°C Max Temp. |
| Inconel | |
| Excellent heat and oxidising resistance. | 1000°C Max Temp. |
| Stainless Steel | |
| High corrosion resistance depending on grade used. | 600°C Max Temp. |
| Leather | |
| Low cost. Limited chemical and heat resistance. Not recommended against pressurised steam, acid or alkli solutions. | 100°C Max Temp. |
