Tag Archives: history

Historical Fiction Company Summary of Enchanted Journal

My latest novel, “The Enchanted Journal: Adventure on the Oregon Trail,” has been reviewed by the Historical Fiction Company and was awarded four out of five stars. Here’s some of what they said about it.

“The Roberts family takes the Oregon trail to make a new future for themselves. But the six month-long journey is not an easy adventure; it needs endurance, tenacity, cunning, and patience to arrive at the destination alive. Incredible dangers are lurking on its path that could end someone’s life in hours, and there are many graves along the road. Does the Roberts family have what it takes to make it?

“The reader becomes deeply attached to the characters, watching out for dangers, predicting a plot twist (and being often wrong), or wishing the villain could forever disappear. While the reader can possibly foresee the turn of events, by the end, there is one more surprise to entice and entertain (no spoilers). Overall, The Enchanted Journal proved an entertaining reading which teaches a few history lessons along the way.”

API 682 Mating Ring Clearances

Mating Ring Clearance Illustration

Before the 4th Edition, API 682 did not specify a minimum clearance between the inside diameter of a stationary seal part and the outside diameter of a rotating seal part. The 4th Edition specifies this minimum clearance – typically the clearance between the sleeve OD and the mating ring ID. The clearances specified in 4th Edition are representative of standard clearances that have been used for decades.  I’ve written a historical perspective on how those sleeve to mating ring clearances came to be.

It should be emphasized that the minimum clearance specified in API 682 4th Edition applies only to equipment within the scope of the standard. Equipment outside that scope, such as non-cartridge seals, older pumps, non-API 610 pumps and certain severe services, might benefit from larger clearances.