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Aavolyn # 56-43901-716, AVA5015 TY430 Butt Cut Rider Ring
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The rider split or wear ring is part of all piston designs where there is no lubrication or the
possibility of loss of lubrication exists during operation. New process compressors have rider
rings included whether the compressor is lubricated or non-lubricated. The rider supports the
weight of the piston and prevents contact with the cylinder wall. It is designed taking into
consideration the weight of the piston and rod, the physical properties of the ring material, the
operating conditions and the desired ring life. AAVOLYN engineers have considerable
experience in designing PTFE rider rings for all pressures, temperatures and gases. The
Type 430 split rider ring is recommended unless the ring travels out into the counter bore
area. Side and face grooves can be added to ensure the rider ring does not act as a piston
ring. The large surface area would generate significant frictional heat. Therefore grooves are
necessary to prevent the ring from sealing. The split rider is available in step, angle or butt
cut design.
1 piece Butt Cut Rider Ring
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Cylinder/ Rod Diameter
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17.750
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Material
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AVA5015
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Material Description
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- Throughout the Specialty Gas industry AVA5015, is recognized as the finest material available for use in Oxygen and Argon service. It was specifically developed for Oxygen bearing gases. No other product comes close to the wear properties exhibited by this patented PTFE blend. The proprietary fillers in AVA5015 form a surface film with excellent frictional characteristics. This film increases the life of the sealing ring three to five times that of other filled PTFE.
The specific percentage and type of filler, as well as particle size, molding procedures, and sintering cycles are critical to the development of the surface film. - When combined with the PBU pressure balanced piston ring & packing designs, AVA5015. significantly reduces surface generated frictional heat. Every major specialty gas manufacturer has verified the performance of this unique material over any products available on the market today. Specific application performance data can be obtained on request.
- Substitute materials have been offered for use in Oxygen or Argon applications, resulting in reduced ring life. The glass/moly filled and straight glass filled PTFE exhibit 1/2 to 1/3 the seal life when substituted for the AAVOLYN product. Once the AVA5015 seals seat after installation, wear rates drop substantially. This proprietary material eliminates wear on the sealing surfaces such as piston grooves, cylinder walls and piston rods & limits ring wear.
Recommended Usage: Oxygen, Argon, Air Though out the Specialty Gas Industry AVA5015 is recognized as the finest material available for Oxygen service.
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