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Chemical-resistant o-rings seal down to -42 Celsius

02 March 2011

Chemically resistant Kalrez O-ring seals from Dichtomatik are rated for operation at temperatures down to -42°C. These products are the latest in the DuPont Kalrez Spectrum perfluoroelastomer range, which has proven capability with over 1,800 chemicals, solvents and aggressive fluids, combining excellent sealing performance and elasticity at such low temperatures. The seals are a suitable replacement for less chemically resistant elastomers such as silicone or fluoroelastomers.

The upper service temperature limit for these products is 220°C, with an approximate volume swell of 10% when exposed to nitric acid for a duration of 168 hours. Compression-set resistance is similar to other Kalrez products in the range, which also incorporate the same high levels of chemically-resistant protection.

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