Hallite® Type 720

The Hallite 720 solves difficult assembly problems and can be a cost-effective alternative to the traditional piston assembly which has a separately fitted seal and bearing(s). This seal improves stability and has smaller extrusion gaps that extend the life of the piston seal. Moulding the bearing material over the outer diameter gives an extremely tight fit between the piston and the cylinder bore. The piston diameter is tightly controlled which reduces the tolerance build up and results in increased performance.

The Hallite 720 unitized piston is constructed using five components:

• High strength steel body
• Non-metallic bearing
• Rubber energiser
• Filled PTFE seal ring for inch sizes
• Polyurethane seal ring for metric sizes