FOR MODELS: JGW, JGR AND JGJ SECTION 5 - MAINTENANCE
1/01 PAGE 5 - 29
Type "BD" Double Acting Seal Set
This set consists of two tangentially step cut rings. The rings are doweled so the tangential
cuts are staggered from one ring to the other. The installed total end gap is 0.078 to 0.109
inches (1.98 to 2.77 mm) for Teflon material and 0.156 to 0.187 inches (3.96 to 4.75 mm) for
bronze, Polyimide and PEEK materials. The set is double acting in that it will seal in either
direction. It is used in cylinders operating near atmospheric pressure to prevent air from
entering the cylinder. Install with the match mark letters facing the pressure. See Figure 5-
16:
FIGURE 5-16: TYPE “BD” DOUBLE ACTING
Alignment
Dowel
D
BD
B
Tangential Step Cut
Material: Teflon
Letters toward pressure/cylinder
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