Exhaust Flex Coupling to Threaded Pipe

[ArtJ]

http://www.industrialinsulation.com/calcium_silicate_insulation.htm

Here is some calcium silicate A little more searching should be able to find
1 1/2 inch id.

Here are some links I found on McMaster car both for the calcium silcicate and the wrap tape. The links get you to the general area, I had trouble copying
the exact pages

http://www.mcmaster.com/#thermal-insulation/=sv7kw1

http://www.mcmaster.com/#thermal-insulation/=sv7lws

http://www.mcmaster.com/#thermal-ins...n/=sv7lwsRigid Calcium Silicate Insulation

The high-strength, durable sheets withstand the high heat conditions of ovens and furnaces.
High Temperature Sheets
Maximum Temperature: 1200° F
Heat Flow Rate (K-Factor): 0.73 @ 800° F
Density: 14.5 lbs./cu. ft.
Color: Gold
Meet ASTM E84 0/0 for flame and smoke.
6" × 36"
12" × 36"
18" × 36"
Thick. Pkg. of 2 Pkg. of 2 Pkg. of 2
1 1/2" 9391K51 $25.29 9391K52 $48.69 ______ __
2" 9391K61 33.53 9391K62 66.38 9391K63 $152.23
Extra High Temperature Sheets
Maximum Temperature: 1700° F
Heat Flow Rate (K-Factor): 0.80 @ 800° F
Density: 40 lbs./cu. ft.
Color: White
Can be machined. Meet ASTM E84 0/0 for flame and smoke.
12" × 12"
24" × 48"
48" × 48"
Thick. Each Each Each
1/2" 9353K31 $13.36 9353K41 $94.34 9353K61 $164.09
3/4" 9353K32 17.04 9353K42 120.70 9353K62 200.73
1" 9353K33 20.00 9353K43 134.55 9353K63 226.04
Extra High Temperature High-Strength Sheets
Maximum Temperature: 1700° F
Heat Flow Rate (K-Factor): 1.05 @ 800° F
Density: 55 lbs./cu. ft.
Color: White
These sheets have exceptional strength when compressed. Can be machined.
12" × 12"
24" × 48"
48" × 48"
Thick. Each Each Each
1/2" 93505K12 $32.20 93505K22 $216.90 93505K32 $365.36
1" 93505K14 43.07 93505K24 292.88 93505K34 516.36
1 1/2" 93505K16 70.28 93505K26 470.22 93505K36 832.64
By using this website, you agree to our Terms and ConditionsHome|Help|Returns|Careers|Settings

Rigid Calcium Silicate Insulation

The high-strength, durable sheets withstand the high heat conditions of ovens and furnaces.
High Temperature Sheets
Maximum Temperature: 1200° F
Heat Flow Rate (K-Factor): 0.73 @ 800° F
Density: 14.5 lbs./cu. ft.
Color: Gold
Meet ASTM E84 0/0 for flame and smoke.
6" × 36"
12" × 36"
18" × 36"
Thick. Pkg. of 2 Pkg. of 2 Pkg. of 2
1 1/2" 9391K51 $25.29 9391K52 $48.69 ______ __
2" 9391K61 33.53 9391K62 66.38 9391K63 $152.23
Extra High Temperature Sheets
Maximum Temperature: 1700° F
Heat Flow Rate (K-Factor): 0.80 @ 800° F
Density: 40 lbs./cu. ft.
Color: White
Can be machined. Meet ASTM E84 0/0 for flame and smoke.
12" × 12"
24" × 48"
48" × 48"
Thick. Each Each Each
1/2" 9353K31 $13.36 9353K41 $94.34 9353K61 $164.09
3/4" 9353K32 17.04 9353K42 120.70 9353K62 200.73
1" 9353K33 20.00 9353K43 134.55 9353K63 226.04
Extra High Temperature High-Strength Sheets
Maximum Temperature: 1700° F
Heat Flow Rate (K-Factor): 1.05 @ 800° F
Density: 55 lbs./cu. ft.
Color: White
These sheets have exceptional strength when compressed. Can be machined.
12" × 12"
24" × 48"
48" × 48"
Thick. Each Each Each
1/2" 93505K12 $32.20 93505K22 $216.90 93505K32 $365.36
1" 93505K14 43.07 93505K24 292.88 93505K34 516.36
1 1/2" 93505K16 70.28 93505K26 470.22 93505K36 832.

[romantic comedy]

Thanks Art. I dont remember that thread. I must be older then I think I am.

[ArtJ]

It was part of the fire extinquisher thread. Just search for Calcium Silicate
. l

The only reason I didn't stay with it was because of discovering
the wrap which has been working okay, but the Calcium Silicate would
certainly provide the ultimate insulation and protection.

Just be sure to put the correct sticky wrap on it to prevent powder
flaking off and you will be all set for 20 or more years

[joe_db]

Since this exhaust is in an insulated closed in space, I think even 99% effective insulation would still allow the area to heat up eventually. This seems like it might be a good spot for a blower to be sucking hot air out of.

[romantic comedy]

Joe, air flow would help also.

With insulation, in a steady state situation, the temperature on the cool side will not equal the temperature on the hot side. For most materials the temperature vs distance from the heat is a straight line relationship. Meaning, the further you get from the hot side, the lower the temperature.

[ArtJ]

When I had the calcium silicate hard insulation installed, the surface was
dramatically cooler than the current situation with 3 turns of wrap.
As explained, the only reason i left the calcium silicate was because
I was assured that the wrap was a better solution and the calcium
silicate left a powder - due to my neglecting to wrap it with sticky
high temp fiberglass tape. I have only stayed with the wrap because
it is there and has been somewhat okay ie no burnt wood.

The calcium silicate is by far a much better choice, and was researched
and used by Tom Stevens on his personal Tartan 34.

Art

[Trés 30]

http://www.industrialinsulation.com/...insulation.htm

Here is some calcium silicate A little more searching should be able to find
1 1/2 inch id.

Here are some links I found on McMaster car both for the calcium silcicate and the wrap tape. The links get you to the general area, I had trouble copying
the exact pages

http://www.mcmaster.com/#thermal-insulation/=sv7kw1

http://www.mcmaster.com/#thermal-insulation/=sv7lws

http://www.mcmaster.com/#thermal-ins...n/=sv7lwsRigid Calcium Silicate Insulation

Wow! love learning about new materials, and that site has everything!

Does anyone have experience with that "rigid very high temp mineral wool pipe insulation"? Seems like it'd be a good product for hot sections.

http://www.mcmaster.com/#thermal-insulation/=t1g8j5

[ArtJ]

Originally Posted by ArtJ View Post

http://www.industrialinsulation.com/...insulation.htm

Here is some calcium silicate A little more searching should be able to find
1 1/2 inch id.


The above link is to a company which makes the proven insulation used by Tom
of Indigo Just call for 1 1/2 version . May have to buy a box size.

Art

[romantic comedy]

I would think about using the flat insulation.