| 摘要 |
<p>A polish rod seal comprising; a post with a bottom end, top part, and circumferential flange situated between the bottom end and top part; a collar that fits over the top part of the post, the collar having one or more internal channels into which 0- rings are inserted and positioned, between the collar and top pan of the post; and a barrel with a bottom end and two internal bushings, each of which has one or more internal channels into which O-rings are Inserted, The bottom end of the barrel screws into the top part of the post. Lambda bracket is attached to the circumferential at flange and secures the collar on the top part of the post, while still alb wing it to hex on the post. A polish rod extends through the post, collar and barrel and is in contact with the O-rings in the internal bushings.</p> |
