1. Hand tighten Drop Seal to the bottom of the 40mm or 50mm waste pipe outlet of the shower base, bath, vanity, reducer or puddle flange.
2. Line up the p/s waste trap to the centre of the waste pipe outlet and support the bottom of the p/s trap.
3. Insert Drop Seal into the 40mm or 50mm p/s trap and set the shower base, bath, vanity, reducer or puddle flange in place and set to floor.
Drop Seal will seal inside of the 40mm or 50mm p/s trap.