Buna O-rings, NBR or Nitrile O-rings offer excellent sealing properties and mechanical properties with low cost. Buna and Nitrile O-rings have a basic resistance to common lubricants and are recommended for crude oil, gasoline, propane, petroleum oils and water. Nitrile and Buna O-rings are used in engines, gearboxes, aircraft pumps, and common water applications.
25% Bronze Powder Fillded PTFE is the most common metal filler, it is dark brown in color. Bronze filler has excellent wears, creep resistance, and higher thermal conductivity than glass fiber with PTFE
Silicone o-rings offer wide temperature ranges and low temperature flexibility. Silicone is renowned for its retention of flexibility and low compression set characteristics