Hawk global Gasket Tape; 75mm; 6' 7'' (2m) size . Exceptional for sealing the underside of centerboard trunks; transom flaps or rudder fairings on larger boats. Mylar (with Dacron on one aspect for glue/epoxy to bond to). 2''W size (SS50) is typically for centerboard gaskets (two separate strips overlapping). 3''W size (SS75) is for centerboard gaskets (on strip slit down the middle or two separate strips overlapping).