hydraulic door closer hinge

Specifications: 1. Shaft dimension 23mm; Length 150mm*extended width 100mm*thickness 3.5mm 2. Weight:2.3kg per set 3.Adopt Germany branded hydraulic oil (Nair-45'C ,flash point 190'C),Germany branded latex sealing piece (heat resistance over 150'C),imported springs As national patented products, our 3-in-1 hydraulic door closer hinge integrates the functions of door closer, hinge, and door stopper/holder/sucker. It can completely take the place of the three above door hardware, with its excellent performance. It is featured with those advantages such as unique designs, compact structures, small volume, light weight, elegant appearance, and steady performance. Applications: Used in door of any materials that can be installed with ordinary hinges & widely used in goverment departments,company buildings,hotels,telephone box,security door ,artistic door etc. Door size: Length 1.8-2.5m*width0.7-1.2m*thickness42-60mm.