PTFE/Silicone.

• Temperature resistance: from −60 to 230 °C
• Universal chemical resistance
• Pressure: low
• Vacuum: suitable

Made of PTFE and silicone, circular PTFE collar facilitates assembly and assures exact placement of the gasket. The elasticity for expansions and contractions is given by a special kind of silicone which is placed behind PTFE sealing lips. Universal chemical resistance since the product is only exposed to PTFE.

For HWS® 'Adaptor, metal, for flexible metallic hose' for a reliable sealing between glass flange and metal adaptor. Ideal for sealing temper connections, e.g. on double walled vessels.