Black XNBR valve seat for wafer / lug type (centerline) butterfly
Carboxyl nitrile rubber (XNBR)
1. Basic characteristics:
1.1 Vulcanization speed is faster than nitrile rubber and easy to
1.2 Pure rubber blend shows high tensile strength.
1.3 Vulcanized rubber has good heat resistance and wear resistance.
2.1.4 Good compatibility with phenolphthalein resin.
2. Scope of application: Mainly used for hoses, seals, gaskets, oil
seals, various model products and adhesives.
The butterfly valve seal is an essential component for blocking all
three potential leakage paths: the sealing of pipes, flanges and
operating shafts, in shut-off valves, flap valves and disk valves.
In their materials and design, they must be configured optimally
for the respective application.
Sealing solutions from our factory offer a precisely calibrated
material quality and torque-reducing geometries. On one hand, they
allow the flap to close with a low expenditure of force. On the
other hand, they nonetheless feature a high pressing action for
Free of both dead space and the penetration of contamination, the
designs make possible hygienic applications for the food and
We can offer the FDA foodgrade rubber for your application.
Materil temperature chart
|Material||Recommended General Operationg Range|
|Low Temp||High Temp.|