Big problem with helium escape

U ulackfocus

Don't forget to mention the HRR (helium retention ring). If the HRR isn't properly greased, the seal could be compromised.

watchknut

rumor has it that Astroglide is the grease of choice for the HRR...any truth to that?

U ulackfocus

Don't know. Maybe we should as in that thread.

U ulackfocus

A question came up in another thread about the best grease for a watch's HRR (helium retention ring):





Do any of our watchmakers or members have any insight they'd like to share? Also, is there a generic version of Astroglide that might save a little money?

Thanks!

Ali Haas

I have not read the whole thread, sorry. But the volume of a watch case is fixed. If it was evacuated of all and any gases it would be lightest. Less than a gram less compared to any gas you could put in there. If you then add back Any gas, including He the weight of the watch would only increase. The more He you add the heavier the watch would be. But again, even at 1,000 PSI it would not add a gram to the weight to the watch.

In fact, if you pressurized air vs He to the point of liquefaction the He would actually weigh more but still less than a gram likely.

Ali

tyrantlizardrex

Hi Ali - you are aware that this thread is a joke, right?