The sealant Half Twist Coupler series is used to seal any kind of plain pipes or plain bores. Half twist can also be used to test pipes with beads, flanges, flare ends or barb ends. Half twist coupler is manually actuated with just twisting the coupler. These couplers are best used for blinding or filing at low pressure. The half twist feature allows fast engagement and disengagement of the coupler. the compact design ensures sealing at constrained spaces also. Half twist coupler is manually actuated with just twisting the coupler. These couplers are best used for blinding or filing at low pressure.