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Item # TGA-19-1
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Item # TGA-19-1, Terminal Gasket Assembly
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The TGA consists of two ceramic fiber washers, one steel washer, and a spring.
The TGA is used as an alternative to packing ceramic fiber insulation around the Starbar cold end. Ceramic fiber insulation is often used at the cold face of the furnace to help reduce furnace energy losses.
There are advantages to using the TGA rather than packing ceramic fiber insulation around the Starbar. Because the TGA is spring-loaded it allows the Starbar freedom of movement. If ceramic fiber is packed too tightly it can cause tremendous physical stresses to be exerted to the Starbars, possibly leading to failures due to breakage. Freedom of movement is important because there is movement between the Starbars and the furnace walls created by different thermal expansion rates.
Installing of TGA is also quicker than packing with ceramic fiber.
Neither of these methods are intended to be an atmosphere seal. It is to help reduce radiant energy losses, and to a smaller degree some convection heat losses.
There are two free spring lengths, 1 inch (25 mm) and 3 inches (75 mm). The last digit of the part number is used to call out the free spring length.
Specifications
·
Tables and Charts
Specifications
Starbar Diameter
0.75
Inch
19
mm
Steel Washer ID
0.78
Inch
20
mm
Steel Washer OD
1.50
Inch
38
mm
Ceramic Fiber Washer ID
0.75
Inch
19
mm
Ceramic Fiber Washer OD
2.00
Inch
51
mm
Free Spring Length
1
Inch
25
mm
Approx. Ceramic Fiber Washer Thickness
0.125
Inch
3.2
mm
Availability
Most sizes are available from stock. Others can be shipped in one week, or quicker for emergencies.
Note
The last digit of the part number represents the Free Spring Length in Inches, either 1 or 3.
This Strap and Clamps are shown for illustrative purposes and are not supplied with TGA assembly.
Tables and Charts
Terminal Gasket Assembly
TERMINAL GASKET ASSEMBLY
Starbar Diameter
* Part Number
Steel Washer ID
Steel Washer OD
Ceramic Fiber Washer ID
Ceramic Fiber Washer OD
MM
Inch
MM
Inch
MM
Inch
MM
Inch
MM
Inch
10
0.38
TGA-10-_
11
0.44
25
1.00
9.5
0.38
32
1.25
11
0.44
TGA-11-_
13
0.50
32
1.25
11
0.44
38
1.50
13
0.50
TGA-13-_
14
0.56
32
1.25
13
0.50
38
1.50
16
0.63
TGA-16-_
17
0.65
35
1.38
16
0.63
45
1.88
19
0.75
TGA-19-_
20
0.78
38
1.50
19
0.75
51
2.00
25
1.00
TGA-25-_
27
1.06
51
2.00
25
1.00
64
2.50
32
1.25
TGA-32-_
33
1.31
70
2.75
30
1.18
83
3.25
35
1.38
TGA-35-_
36
1.44
70
2.75
35
1.38
83
3.25
38
1.50
TGA-38-_
40
1.56
70
2.75
37
1.44
83
3.25
44
1.75
TGA-44-_
47
1.88
83
3.25
43
1.69
95
3.75
54
2.12
TGA-54-_
56
2.22
89
3.50
51
2.00
101
4.00
64
2.50
TGA-64_
63
2.50
105
4.12
63
2.50
114
4.50
70
2.75
TGA-70-_
73
2.88
105
4.12
70
2.75
114
4.50
For All TGA:
MM
Inch
Free Spring Length
25 or 75
1 or 3
Ceramic Fiber Washer Thickness
Approx. 3.2
Approx. 0.125
* The last digit of the part number represents the Free Spring Length in Inches, either 1 or 3.
Parts can also be purchased separately. When ordering separately
the steel washers, ceramic fiber washers, and springs are designated
by TW-_ _, TG-_ _, and TS-_ _-1 or TS-_ _-3 respectively.
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