ORING FOR COMPRESSION COUPLINGS Φ20, ORING FOR COMPRESSION COUPLINGS Φ25, ORING FOR COMPRESSION COUPLINGS Φ32, ORING FOR COMPRESSION COUPLINGS Φ40, ORING FOR COMPRESSION COUPLINGS Φ50, ORING FOR COMPRESSION COUPLINGS Φ63, ORING FOR COMPRESSION COUPLINGS Φ75, ORING FOR COMPRESSION COUPLINGS Φ90