Waterproof injection packer is used to inject water-sealing agent into cracks on the walls. First you drill holes on the leaking or strengthening position, then lock  tightly the packers into the holes with "T" spanner.

single liquid packer:
SL-C8: 10*80mm
SL-C10: 10*100mm
SL-8: 13*80mm
SL-10:  13*100mm
SL-15: 13*150mm
SL-20: 13*200mm
SL-25: 13*250mm
SL-30: 13*300mm
SL-100: 13*1000mm

Packing: 1000pcs/carton;500pcs/carton