FPN插头保护抽油杆螺纹联轴器。 它们防止污垢和碎屑进入联轴器，并且还有助于防止外来物损坏螺纹。 材料：低密度聚乙烯 标准颜色：黑色
The FPN plugs protect sucker-rod threaded couplings. They prevent dirt and debris from entering the coupling and also help protect against foreign objects damaging the threads.
Material: Low-density polytheylene Standard Color: Black
To Cap Rod Size
Dim A (IN)
Dim C (IN)
Dim D (IN)
5/8
.975
.38
1.38
3/4
1.100
1.50
7/8
1.225
1.69
1
1.415
2.00