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Products  

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.
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
Joint Size I.D. (in.)
 
Single Arch Recom-mended f-f (in.)
 
Double Arch Recom-mended f-f (in.)
 
Single Arch Axial Compression
 
Single Arch Axial Extension
 
Single Arch Axial Lateral
 
 
Working Pressures (psi)
Style 150-200
Style 200XL Wide Arch
Style 150-200
Style 200 XL Wide Arch
Style 150-200
Style 200XL Wide Arch
Style 150
Style 200
Style 200XL Wide Arch
1/2
6
10
1/2
1
1/4
1/2
1/2
3/4
165
200
225
3/4
6
10
1/2
1
1/4
1/2
1/2
3/4
165
200
225
1
6
10
1/2
1
1/4
1/2
1/2
3/4
165
200
225
1-1/4
6
10
1/2
1
1/4
1/2
1/2
3/4
165
200
225
1-1/2
6
10
1/2
1
1/4
1/2
1/2
3/4
165
200
225
2
6
10
1/2
1
1/4
1/2
1/2
3/4
165
200
225
2-1/2
6
10
1/2
1
1/4
1/2
1/2
3/4
165
200
225
3
6
12
1/2
1
1/4
1/2
1/2
3/4
165
200
225
4
6
12
1/2
1
1/4
1/2
1/2
3/4
165
200
225
5
6
12
1/2
1
1/4
1/2
1/2
3/4
140
200
225
6
6
12
1/2
1
1/4
1/2
1/2
3/4
140
200
225
8
6
12
3/4
1-1/2
3/8
1/2
1/2
1
140
190
225
10
8
12
3/4
1-1/2
3/8
3/4
1/2
1
140
190
225
12
8
12
3/4
1-1/2
3/8
3/4
1/2
1
140
190
225
14
8
12
3/4
1-1/2
3/8
3/4
1/2
1
85
130
150
16
8
12
3/4
1-1/2
3/8
3/4
1/2
1
65
110
150
18
8
12
3/4
1-1/2
3/8
3/4
1/2
1
65
110
150
20
8
14
7/8
1-3/4
7/16
3/4
1/2
1
65
110
150
22
10
14
7/8
1-3/4
7/16
3/4
1/2
1
65
100
150
24
10
14
7/8
1-3/4
7/16
3/4
1/2
1
65
100
150
26
10
14
1
1-3/4
1/2
3/4
1/2
1
55
90
125
28
10
14
1
1-3/4
1/2
3/4
1/2
1
55
90
125
30
10
14
1
1-3/4
1/2
3/4
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
1-3/4
1/2
3/4
1/2
1
55
90
125
42
12
16
1-1/8
1-3/4
1/2
3/4
1/2
1
55
80
100
44
12
16
1-1/8
1-3/4
1/2
3/4
1/2
1
55
80
100
48
12
16
1-1/8
1-3/4
1/2
3/4
1/2
1
55
80
100
50
12
16
1-1/8
1-3/4
1/2
3/4
1/2
1
55
80
100
54
12
16
1-1/8
1-3/4
1/2
3/4
1/2
1
55
80
100
56
12
16
1-1/8
1-3/4
1/2
3/4
1/2
1
55
80
100
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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