They are inkjet printed around the nozzle end of the cartridge
As long as the surface of the cured rubber is kept dust and grease free, more rubber of the same type can be poured on top and will bond with the surface. There will be no detectable join. (unless a different coloured catalyst is used, of course) If the above is strictly adhered to then there are no time constraints.
1 parts condensation cure: - by increasing the humidity 2 parts: Silcosets - increase the amount of catalyst to a Maximum of 1% - Apply heat, again not more than 40C 900 Series - Use Cat Red 5 – see technical data sheet for more information Addition Cure 2 part – Increase temperature of curing oven – see individual data sheets. It should be noted however, that the slower the curing of silicone rubber, the better the quality and durability. You will note that any testing undertaken is done after 7 days, when the rubber has fully cured and all volatile products have evolved at which point the rubber has reached its optimum properties.
by using a 1 part RTV - ensuring the edges of the tear are clean and grease free - apply as per the Technical Data Sheet
you will need to know the width and depth of the joint then see calculation table for how many cartridges you will require.
see adhesion substrate guide for which adhesive type to choose and if a primer is required.
Yes we have several sealants that will withstand 300 C see adhesive product lists for temperature range
Yes SGM494 is WRAS approved for hot and cold water and a copy of the certificate can be found on the website under approvals
See section 13 of the Material Safety Data Sheet (MSDS) of the country specific document