Dura-Perm
UNAFLEX "DURA-PERM" Expansion Joints combined the best features of PTFE with the best features of elastomeric expansion joints. Joints are available in 1" to 96" I.D. in standard face-to-face dimensions, or special lengths. Also available in multiple arch configurations, or as straight pipe (see flexible pipe section). NOTE: 1/2" to 1-1/2" sizes are flared to raise face dimension only.
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| They are recommended for use in the chemical and pulp paper industries because of their capabilities to resist corrosive attack, high temperatures, and pressures. |
- Chemical Resistance/ Anti-stick properties
- Noise and Vibration dampening/ High Flexibility
- Thermal Stability/ Resistance to age cracking
- High pressure rating/ Temperature rating to 400°F
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Joint Size I.D. (in.)
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Single Arch Recom-mended f-f (in.)
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Double Arch Recom-mended f-f (in.)
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Single Arch Axial Compression
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Single Arch Axial Extension
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Single Arch Axial Lateral
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Working Pressures (psi)
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Style 150-200
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Style 200XL Wide Arch
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Style 150-200
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Style 200 XL Wide Arch
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Style 150-200
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Style 200XL Wide Arch
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Style 150
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Style 200
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Style 200XL Wide Arch
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1/2
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6
|
10
|
1/2
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1
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1/4
|
1/2
|
1/2
|
3/4
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165
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200
|
225
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|
3/4
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6
|
10
|
1/2
|
1
|
1/4
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1/2
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1/2
|
3/4
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165
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200
|
225
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1
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6
|
10
|
1/2
|
1
|
1/4
|
1/2
|
1/2
|
3/4
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165
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200
|
225
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1-1/4
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6
|
10
|
1/2
|
1
|
1/4
|
1/2
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1/2
|
3/4
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165
|
200
|
225
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1-1/2
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6
|
10
|
1/2
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1
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1/4
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1/2
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1/2
|
3/4
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165
|
200
|
225
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|
2
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6
|
10
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1/2
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1
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1/4
|
1/2
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1/2
|
3/4
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165
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200
|
225
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2-1/2
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6
|
10
|
1/2
|
1
|
1/4
|
1/2
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1/2
|
3/4
|
165
|
200
|
225
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|
3
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6
|
12
|
1/2
|
1
|
1/4
|
1/2
|
1/2
|
3/4
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165
|
200
|
225
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|
4
|
6
|
12
|
1/2
|
1
|
1/4
|
1/2
|
1/2
|
3/4
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165
|
200
|
225
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|
5
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6
|
12
|
1/2
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1
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1/4
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1/2
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1/2
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3/4
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140
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200
|
225
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6
|
6
|
12
|
1/2
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1
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1/4
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1/2
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1/2
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3/4
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140
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200
|
225
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8
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6
|
12
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3/4
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1-1/2
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3/8
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1/2
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1/2
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1
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140
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190
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225
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|
10
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8
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12
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3/4
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1-1/2
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3/8
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3/4
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1/2
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1
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140
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190
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225
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12
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8
|
12
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3/4
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1-1/2
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3/8
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3/4
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1/2
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1
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140
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190
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225
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|
14
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8
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12
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3/4
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1-1/2
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3/8
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3/4
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1/2
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1
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85
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130
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150
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|
16
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8
|
12
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3/4
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1-1/2
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3/8
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3/4
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1/2
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1
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65
|
110
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150
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|
18
|
8
|
12
|
3/4
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1-1/2
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3/8
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3/4
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1/2
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1
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65
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110
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150
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|
20
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8
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14
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7/8
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1-3/4
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7/16
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3/4
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1/2
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1
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65
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110
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150
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22
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10
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14
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7/8
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1-3/4
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7/16
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3/4
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1/2
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1
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65
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100
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150
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24
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10
|
14
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7/8
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1-3/4
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7/16
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3/4
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1/2
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1
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65
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100
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150
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26
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10
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14
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1
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1-3/4
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1/2
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3/4
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1/2
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1
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55
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90
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125
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28
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10
|
14
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1
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1-3/4
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1/2
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3/4
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1/2
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1
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55
|
90
|
125
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30
|
10
|
14
|
1
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1-3/4
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1/2
|
3/4
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1/2
|
1
|
55
|
90
|
125
|
|
34
|
10
|
14
|
1
|
1-3/4
|
1/2
|
3/4
|
1/2
|
1
|
55
|
90
|
125
|
|
36
|
10
|
14
|
1
|
1-3/4
|
1/2
|
3/4
|
1/2
|
1
|
55
|
90
|
125
|
|
40
|
10
|
14
|
1
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1-3/4
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1/2
|
3/4
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1/2
|
1
|
55
|
90
|
125
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|
42
|
12
|
16
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1-1/8
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1-3/4
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1/2
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3/4
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1/2
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1
|
55
|
80
|
100
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|
44
|
12
|
16
|
1-1/8
|
1-3/4
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1/2
|
3/4
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1/2
|
1
|
55
|
80
|
100
|
|
48
|
12
|
16
|
1-1/8
|
1-3/4
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1/2
|
3/4
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1/2
|
1
|
55
|
80
|
100
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|
50
|
12
|
16
|
1-1/8
|
1-3/4
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1/2
|
3/4
|
1/2
|
1
|
55
|
80
|
100
|
|
54
|
12
|
16
|
1-1/8
|
1-3/4
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1/2
|
3/4
|
1/2
|
1
|
55
|
80
|
100
|
|
56
|
12
|
16
|
1-1/8
|
1-3/4
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1/2
|
3/4
|
1/2
|
1
|
55
|
80
|
100
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|
60
|
12
|
16
|
1-1/8
|
1-3/4
|
1/2
|
3/4
|
1/2
|
1
|
55
|
80
|
100
|
|
62
|
12
|
16
|
1-1/8
|
1-3/4
|
1/2
|
3/4
|
1/2
|
1
|
55
|
80
|
100
|
|
66
|
12
|
16
|
1-1/8
|
1-3/4
|
1/2
|
3/4
|
1/2
|
1
|
55
|
80
|
100
|
|
72
|
12
|
16
|
1-1/8
|
1-3/4
|
1/2
|
3/4
|
1/2
|
1
|
45
|
70
|
100
|
|
78
|
12
|
16
|
1-1/8
|
1-3/4
|
1/2
|
3/4
|
1/2
|
1
|
45
|
70
|
100
|
|
84
|
12
|
16
|
1-1/8
|
1-3/4
|
1/2
|
3/4
|
1/2
|
1
|
45
|
70
|
100
|
|
96
|
12
|
16
|
1-1/8
|
1-3/4
|
1/2
|
3/4
|
1/2
|
1
|
45
|
70
|
100
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