CONNECTION EX Ferraz de Vasconcelos SEALING UNIT SEALING UNIT SEALING UNIT SEALING UNIT SEALING UNIT SEALING UNIT STOPPER WITH RECESS STOPPER WITH RECESS Use in closing connections. STOPPER WITH RECESS STOPPER WITH RECESS Use in closing connections. STOPPER WITH RECESS STOPPER WITH RECESS Use in closing connections.