Patent ID: 11905780
Assignee: AWA OILFIELD SERVICES, INC.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A secondary seal for a polished rod stuffing box, wherein the stuffing box has a primary seal pack disposed below a stuffing box cap, the secondary seal comprising:
a body having an inner surface and an outer surface separated by a first wall thickness, and an inner side surface and an outer side surface separated by a second wall thickness;
a cylindrical opening in the body through the first wall thickness, the opening defined by a first diameter;
a separation in the body from the cylindrical opening to the outer side surface and extending through the first and second wall thicknesses, the separation forming a fluid seal when the separation is closed;
wherein the separation can be opened and the cylindrical opening placed about a portion of a polished rod above the stuffing box cap to fluidly seal against the polished rod; and
wherein when the inner surface of the body contacts an outer top surface of the stuffing box cap, and the inner side surface of the body contacts an outer side surface of the stuffing box cap, the separation is closed and the stuffing box is sealed against fluid intrusion from above the stuffing box cap.