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Sealing smokeboxes

roystonthomas

Joined: 1-01-85

Topics: 5

Replies: 16

Posted: Sun 8th Nov 2015, 4:32pm
Sealing smokeboxes

Sealing smokeboxes
Hi All, Has anyone sucessfully used a high temperature silicone sealant to seal the steam pipes in the base of the smokebox? I am finishing off a Milner Hunslet and don't want to use a fire cement as it would then be nigh impossible to get at the pipe fittings passing through the base as they would be set in "concrete".
 

Replies To This Post

PeteW

Joined: 1-10-13

Topics: 0

Replies: 21

Posted: Sun 8th Nov 2015, 7:44pm

I used some 1200 deg stuff from Screwfix for this job in a 5" gauge Polly 1 some months ago. It seems to do the trick. Gun Gum Putty did not last at all for me.
 

roystonthomas

Joined: 1-01-85

Topics: 5

Replies: 16

Posted: Sun 15th Nov 2015, 11:20am

Thanks Pete
 

georgedavis

Joined: 1-01-89

Topics: 0

Replies: 5

Posted: Sat 21st Nov 2015, 11:10pm

I have used fire cement very successfully on my C19 2-8-0 loco, now 24 years old. It seals large gaps, where the steam and exhaust pipes enter, very effectively and is not only very durable but is easily chipped out with a small chisel when needed. I have had it last 10 years, since the last overhaul, with no attention needed whatsoever. The brand I use is 'PYRUMA'
 
 
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