دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a hole drilled into the space between rings of packing material used with a liner in a mud pump. When the liner packing fails, fluid spurts out of the telltale hole with each stroke of the piston, indicating that the packing should be renewed.

n: The hole between capping gland nut and packing washer of drag link of drill pump.