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All Categories > Rod and Wiper Packing > AVA45/Bronze TY260/230 PBU Packing Rings > Aavolyn # 53-26021-B04  
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Aavolyn # 53-26021-B04, AVA45/Bronze TY260/230 PBU Packing Ring

Where discharge temperatures are a problem over 500 PSI, in non-lube and 2500 PSI, in lubricated service, the AAVOLYN Type 260/230 PBU pressure balanced design with back up ring is recommended to optimize ring life.


Cylinder/ Rod Diameter




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