FOR MODELS: JGW, JGR AND JGJ SECTION 5 - MAINTENANCE
1/01 PAGE 5 - 27
Types of Piston Rod Packing Rings
Type "P" Pressure Breaker
This is a single ring. It is cut radially into three equal segments. Total end clearance for the
ring is 0.030 to 0.036 inches (0.76 to 0.91 mm) for PEEK material and 0.015 to 0.021 inches
(0.38 to 0.53 mm) for bronze and cast iron materials. This ring breaks down or slows the gas
flow without sealing it completely. This end gap should be maintained by adjusting the ring
gap or replacing the ring. See Figure 5-14:.
FIGURE 5-14: TYPE “P” PRESSURE BREAKER
Radial Cut
Material: PEEK
Letters toward pressure/cylinder
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