... request. The material can be CS,SS304,SS316,graphite Spiral Wound GasketSpiral-Wound gasket is suitable for sealing spots where the alteration ... of pipe, valve, pump, thermal exchange, condensing tower, plain hole and man hole of flange, etc.Specification:Description: QS 3050 Spiral-Wound ... and soft non-metallic filler by means of piled, spiral wound and connected its end and beginning by dot welded. ...