torque Primus 210 burner gaskets

How snug should I have to get the burner on a Primus 210 to prevent vapor leakage? I have replaced the old gaskets with a pair of graphite?? gaskets from a spares kit.

I am afraid that if I over torque the burner which now is "snug" that I will either split or squash the washers and cause them to fail.

I can see a faint wisp of vapor from near the spirit cup once in a while.

Will these replacements "settle in" after a couple of firings?

Thanks,

AR

 

Hi AR,

If you can see vapour escaping then I would nip them up just a touch more.

Cheers, Graham.

 

I did not know some gaskets were made of graphite except the ones in some spindles? Thought all the while they were made of some other fireproof gasket materials such as the one I got from Kerophile.

Thats something new

Ron

 

Hi AR, I reckon that the "graphite" gaskets you got in the spares kit, from the 1950s, are actually asbestos-based compound with a graphite coating on the surfaces.

The other slight problem is that they are made for a 1.75/2 pint stove so they are slightly too big for your Pr.210. They will likely "cam-out" as you try to tighten tham

Read this post and if you want to buy some high quality heat-resistant, non-asbestos washers, send me a PM:

https://classiccampstoves.com/threads/8382

Best Regards,
Kerophile.

 

Hi Kerophile,

If you read this can you put me out of my misery. I've been racking my brains to reply as to what that asbestos based material was called - is it something like "calmonite"?

Cheers, Graham.

 

Exactly like calmonite!

Now I thought calmonite was an asbestos substitute but I'd better check. Whatever, it's brittle and won't withstand much over-tightening. Wet the seals beforehand which reduces their tendency to split...

 

Thanks. And in addition to the downsides David presents above I think Superman is allergic to it as well.

Coat on, heading out......

 

get some of Kero's washers, get a variety. your hooked already so save yourself the wait when you need another size! calmonite sounds like something your mom would make you drink, or the army!

 

Sounds to me like something that you put on mosquito bites.

AR

 

nagant sepaks the truth here - Kero is a great bloke to deal with.

Cheers

 

AR,do yourself a favour, as others have said, do get your washers from Kerophile - you will not be disappointed you will be delighted!!

 

They're all but in the mail.

Thanks all, for the advice and source

AR

 

Two bits of advice; Get your gaskets ... Wait that's been said.

Okay one bit of advice: prior to installing your gaskets surface your "ends" on a flat surface using a fine grade of abrasive material. 600-900 wet/dry paper or crocus cloth swept with light pressure in a figure 8 pattern until uniformly bright. Then assemble.

lance

 

Okay a second bit, it's been my experience a proper fitted mating surface aside, if one hand tightens then adds a 1/4 to 1/2 turn of the wrench (spanner) to any joint it's tight enough. If it still leaks take up in 1/8 turns until the leak stops.

lance