Service gurus - silicone lube between 2nd stage diaphragm and purge button?

[Divectionist]

Hi

I've just disassembled the 2nd stages of my fairly new regs for the first time since purchase to perform a more thorough end-of-year clean and I noticed that the R195 Octo has grease between the purge button and diaphragm, whereas the S620Ti does not.

After the bits and pieces have dried, would it make sense to put some grease on the contact point between diaphragm and purge button on both regs, or will this only serve to attract debris? I'd just use regular silicone lube since it's on the outside of the diaphragm and the regs are only used with banked Nitrox. Just unsure whether I should reassemble it all bone dry or not.

Any help would be appreciated.

 

[Bigbella]

I wouldn't; and you're right, it will simply attract debris; and none of my manuals call for that treatment of either the purge button or diaphragm . . .

 

[Divectionist]

Thank you

 

[Couv]

it will simply attract debris; and none of my manuals call for that treatment of either the purge button or diaphragm . . .

...and the diaphragm is made of silicone. Never put silicone grease on a component made of silicone as the component will absorb the grease and will distort.

 

[jakehbk]

It may be a little bit of grease from where the button slides thru the front cover on the R195. The S620 has a flexible cover for a purge button instead. You could grease up the area where the button slides if you wanted, but keep the grease off the actual diaphragm itself.

 

[The Chairman]

Leave it clean. No need to attract dirt as others have noted.

 

[Hatul]

...and the diaphragm is made of silicone. Never put silicone grease on a component made of silicone as the component will absorb the grease and will distort.

I read that as well, but then I've had camera housings with silicone O ring that take silicone grease.

 

[buddhasummer]

It may be a little bit of grease from where the button slides thru the front cover on the R195. The S620 has a flexible cover for a purge button instead. You could grease up the area where the button slides if you wanted, but keep the grease off the actual diaphragm itself.

Yes, I've seen it before on G260s.