Shear ram is composed of upper ram body ,lower ram body, top seal,right seal, left seal and tool face seal. Tool face seal is placed in th front slot of the upper ram body,with right seal and left seal on the both sides. The shear ram is installed in the BOP in the same manner sa the common ram.but need to replace tha hanger pf the main piston to hunger. otherwise it will not be used. Other BOP parts that we supply all come from original/OEM manufacturers, they are 100% interchangeable. 1. In accordance with API Spec.16A 2. All the parts are original or interchangeable 3. Reasonable structure, easy operation, long life of plastic core 4. Adapt to a wide range, capable to seal pipe string with nominal paths from 0-DN in and shapes, better performance by combining with ran blowout preventer in the use.