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AVA45 TY260 Pressure Balanced Unit Packing Rings
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Aavolyn # R62878B
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Aavolyn # R62878B, AVA45 TY260 Pressure Balanced Unit Packing Ring
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The AVA-PBU pressure balanced unitized design is the latest concept in shaft seals. The AVA-PBU was developed to extend packing life in conventional applications. However, it has found use in all services from non-lube air to 50,000 PSI compressors handling polyethylene. Each ring operates on the principle of balancing the pressures around the seal to minimize the downward force of the piston rod. Frictional forces are reduced considerably. In applications where filled PTFE materials are utilized, there is less chance that the PV limit (temperature/pressure limit) of the PTFE will be exceeded because of reduced frictional heat.
Specifications
Cylinder/ Rod Diameter
1.125
Material
AVA45
Material Description
AVA45 performs exceptionally well in non-lubricated applications where operating temperatures are a major factor in the performance of the seal. AVA45 combines the strength and thermal conductivity of the bronze with the frictional properties of the Moly Disulfide for both cryogenic and high temperature air service. Wear tests performed by the US Navy for their high pressure non lube compressors showed AVA45 to have the best wear properties of all standard PTFE tested.
Recommended Applications: High Temperature Air Cryogenic Service
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