The HKS rubber expansion joints of Type 2 in Construction types CR, G, GR, R and RS are individually designed to suit customer requirements regarding their pressure level. Nominal widths from DN450 to DN3000.
| Available rubber bellows qualities | |
|---|---|
| CR | Chloroprene, suitable for cold and warm water, swimming pool water, sea water, waste water (weak acid or alkali) - also oleiferous, coolant with oleiferous anti-corrosives, lubricating oil, fats, air and compressed air. |
| G | Nitrile suitable for petroleum products, fuel-ethanol blends and DIN EN fuels, mains gas and natural gas with the exception of liquid gas. |
| GR | Hypalon®, suitable for chemicals, acids, alkalis and corrosive chemical waste. For oleiferous compressor air up to +90°C. |
| R | EPDM, suitable for water, cold and warm process water, sea water, coolant, also with chemical additives for water treatment, weak acids and alkalis, saline solutions, technical alcohols, esters and ketones. |
| RS | EPDM, suitable for water, cold and warm process water, sea water, coolant, also with chemical additives for water treatment, weak acids and alkalis, saline solutions, technical alcohols, esters and ketones. |