15 mm food grade washers

[Lammatron2000]

I'm in the middle of converting my 70litre stock pot into a boiler :)

After my tinkering I'm nearly there, the only trouble is the leaking issue!

I used two elements from the Tesco kettles. These leaked to start with as the SS is thinner than the plastic buckets. Solved this with an o ring on the outside.

However I'm now getting leaky tap isses

I'm using a 15mm ball valve compression tap through a filed out tank connector. Because the tank connector is flat against a round surface I'm getting a leak. Not much of one but I reckon a couple of plastic washers will do the trick.

But what washers and from where? They will need to be food grade and able to withstand 100C+

Any ideas?

thanks

 

[simonranson]

... I think there's a high-temp washers thread in the 'Equipment links' area that has some links of where to find some. Silicone o-rings may be best.

Cheers
Simon

 

[timbim]

There have been suggestions that you can fashion them to requirements from readily available silicone baking sheets.

 

[Aleman]

What washers and from where? They will need to be food grade and able to withstand 100C+

Silicone ones from Altec Web

 

[Vossy1]

There have been suggestions that you can fashion them to requirements from readily available silicone baking sheets.

They can and they're widely available :thumb:

I'm using a 15mm ball valve compression tap through a filed out tank connector. Because the tank connector is flat against a round surface I'm getting a leak. Not much of one but I reckon a couple of plastic washers will do the trick

You should be able to get the area to flatten out under tightening, that'd be my first option.
B&Q do high temp plastic washers, though again, they'll only work with sufficient compressive forces.

 

[evanvine]

I make a lot of sealing rings/washers from Vossy's silicon tube.
You are a bit limited to diameter though (50mm).

 

[Vossy1]

I make a lot of sealing rings/washers from Vossy's silicon tube

Good to hear the forum hose has other uses

You are a bit limited to diameter though

Yep, sheet and punch set sort that out.

 

[BarnsleyBrewer]

I hammered the curve out of mine, never leaked.

BB

 

[Vossy1]

Heathen :rofl:

 

[Lammatron2000]

I managed to solve the problem by doubling up the B&Q washers on both sides :thumb:

HOWEVER

I'm now getting a leak from the olive on the tank connector! I'm putting this down to my filing of it to get the pipe to pass thought! Argh!!

Why can't we buy tank connectors that a pipe can pass though? I don't want to go an buy a new drill bit for drilling out a couple of tank connectors

 

[46.philh]

On http://www.bes.co.uk/products/094.asp

Multi-use Washers

Non-asbestos jointing washer/gasket, composed of kevlar aramid fibres and high temperature resistant mineral fillers, bonded with high CAN-content NBR elastomer. Universal uses - gases, hydrocarbons, solvents, low pressure steam, mild acids and alkali, food industry, water and oils. Colour blue. Approvals : WRc, KTW, DIN-DVGW, SVGW, BAM, HTB, BS 7531: 2006 Grade Y. Temp. (max. short term) : 370°C. Temp. (max. continuous) : 320°C. Steam (max. continuous) : 200°C. Pressure (max.) : 100 bar.

Are these kevlar aramid fibres washers ok ?

 

[Cyclops]

I managed to solve the problem by doubling up the B&Q washers on both sides :thumb:

HOWEVER

I'm now getting a leak from the olive on the tank connector! I'm putting this down to my filing of it to get the pipe to pass thought! Argh!!

Why can't we buy tank connectors that a pipe can pass though? I don't want to go an buy a new drill bit for drilling out a couple of tank connectors

Have you tried wrapping the olive and part of the pipe in ptfe?

 

[evanvine]

Heathen :rofl:

I think the Philistine has an excellent idea there! :whistle:

 

[Lammatron2000]

Have you tried wrapping the olive and part of the pipe in ptfe?

No, I'll give that a go tonight! thanks :)

 

[evanvine]

The olives only "don't fit" if the end of the pipe is distorted or has burrs.