After the sealing rubber ring of the concrete piston seal is worn out and the size is reduced, the machine stops working. Piston part replacement wastes time and greatly increases production costs.
In addition to the general requirements for sealing materials, polyurethane concrete piston seal should also pay attention to the following conditions:
(1) High elasticity and resilience;
(2) Appropriate mechanical strength, including expansion strength, elongation and tear strength, etc.;
(3) Stable performance, not easy to swell in the medium, and small thermal shrinkage effect;
(4) Easy to process and shape, and can maintain precise dimensions;
(5) Do not corrode the contact surface, do not pollute the medium, etc.
Why use polyurethane material?
1. Polyurethane concrete piston seals have:
2. Excellent high extrusion/abrasion resistance;
3. Chemical resistance performance;
4. Good high temperature resistance: up to 300F (150℃)
5. High pressure resistance: up to 7500
