321 spiral wound gasket, consists of "v-sharpe"or"w-sharp"metal tape and nonmetal tape, which are overlapped each other and wound continuously to fast metal tape, both its start point end point are tack welded.

321 spiral wound gasket consists of four types: Basic type, with outer ring, with inner ring, with inner and outer rings; Heat exchanger spiral wound gasket: Basic type and with inner and outer rings.

More information for 321 spiral wound gasket, please contact with Sunwell.