Amazing grease from Japan. My qwik-test.

[LarryS]

3 days ago I mentioned restoring life to original seals/O-rings of the pressure chamber assembly 140-71 used in Crosman pumpers like 140 and many similar models. These models date back to the '50's.

Finishing the restoring process with a "LIGHT, THINLY SPREAD, FILM" of grease out of a Makita grinder gear box on the surface of all O-rings, O-ring channels, and any sealed cap or plug that is under air pressure. The light film was applied by wetting the fingers with some of this grease and rubbing it into the rings etc., and removing any globs or excess with cloth or Q-tip. The grease came from a tool I repaired for Son-in-law.

To date the rifle continues to function and hold air without leakage day after day. Left overnight with 3 pumps, the rifle fires faithfully the next afternoon with a powerful blast of air. Shooting continues flawlessly.

So I decided to test this grease a little further being curious about the sudden change in my rifles dependability.

The grease looks like bee's wax, but a little darker with more orangish-brown tint to it. It is extremely "sticky" without any drippy or oily surface that can creep on application.

I ran a temperature test to see what effect the temperature from a heat gun would have on it and did this by applying a very small glob of grease on the end of a Delta Designs Mirror scale thermometer. The grease was drawn to a tiny tall point with wooden Q-tip handle.

The main stem of the thermometer was protected by 2 inches of solid aluminium round stock with a small hole drilled in the center for the stem, leaving only the tip and the "peaked grease" showing. The point of the test was to see if summer temperatures would cause the grease to flow and possibly change the air storage & shooting of my rifle.

The heat gun was aimed 2 inches away and AT the greased tip and turned on. The temperature of thermometer tip climbed slowly to 140*F (60*C) and still the tiny grease point refused to melt down or collapse. The aluminium stock burned my fingers when removed. That is far higher than my rifle would ever get inside or out during the summer.

Now thoroughly interested..... I applied a pointed glob of grease on the end of a wood Q-tip handle and brought the heat gun in 1 inch away from it turned on. The grease point refused to melt down right up to the point of where the grease finally began boiling!.(super-high temp.). Even then much of the tiny grease point still remained. This stuff is VERY HIGH TEMPERATURE!!! and so "sticky" that it will not flow to adjacent parts or areas.

From this short test (and long dialog)...... I think I've got the ultimate air rifle O-ring and seal grease. And it came from a Makita power tool gear box for those with a similar tool for sourcing the grease for themselves.
-LarryS <Still un-Knighted by the Queen>