TopChem is a range of modified PTFE Based materials which offer the chemical resistance of PTFE with increased mechanical strength and resistance to cold and hot flow under compressive loading. Additional compounds such as silica, barioun sulphate or silicon carbide, allow the materials to be used at higher temperatures and compressive loads than would typically be expected for standard PTFE products.

1. TopChem-2000

Topchem 2000 is a heavy duty modified PTFE material, which has been engineered to cater for a wide range of applications. The exceptional mechanical strength of the material enables it to withstand high temperatures and pressures, whilst providing unparalled creep-resistance. This material has excellent chemical resistance and can be used in strongly acidic and alkaline applications. It is only PTFE based material with fire-free certification (API 6FA).

2. Topchem-2003

TopChem 2003 has been designed to offer high compressibility combined with outstanding chemical resistance. The result is a material which is suitable for practically all media including both strongly acidic and strongly alkaline environments and which is able to maintain a tight seal even at low bolt loads .  The Highly compressible nature of TopChem 2003 allows the material to be used on glass and rubber lined flanges . The material has excellent mechanical properties at low and medium temperatures and loads.

3. TopChem-2005 and 2006

TopChem 2005 and 2006 have been developed to offer an economical alternative to Topchem 2000 and TopChem 2003 for less demanding applications.