FPN插頭保護抽油桿螺紋聯軸器。 它們防止污垢和碎屑進入聯軸器，并且還有助于防止外來物損壞螺紋。 材料：低密度聚乙烯 標準顏色：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