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Mercer Rubber Company

Flexmore Expansion Joints/Features
Style 451Style 452Style 453Style 454Style 455Style 456Control Rods8 CAUTION 7
 

Pipe
Size
(in)
Face
to
Face
(in)

Axial
Compres-
sion
(in)

Axial
Extension
(in)

Lateral
Deflection
(in)

Degrees
Angular
(degrees)

Degrees
Torsional
(degrees)
1-1/2
6
1-3/4
7/8
1
54
9
2
6
1-3/4
7/8
1
45
9
2-1/2
6
1-3/4
7/8
1
38
8
3
6
1-3/4
7/8
1
33
7
4
6
1-3/4
7/8
1
25
6
5
6
1-3/4
7/8
1
21
6
6
6
1-3/4
7/8
1
17
5
8
6
1-3/4
7/8
1
13
4
10
8
1-3/4
7/8
1
11
4
12
8
1-3/4
7/8
1
9
3
14
8
2-1/8
1
1-1/4
10
3
16
8
2-1/8
1
1-1/4
8
3
18
8
2-1/8
1
1-1/4
7
3
20
8
2-1/8
1
1-1/4
7
3
24
10
2-5/8
1-1/4
1-1/2
7
3
30
10
2-5/8
1-1/4
1-1/2
5
3
36
10
2-5/8
1-1/4
1-1/2
4
2
Temperature/Pressure Ratings
Maximum Pressure-   
  All Materials     250æ psig @>150° F
Maximum Temperature-
  Natural Rubber
225psig@180° F
  Chlorobutyl
180psig@225° F
  Neoprene
180psig@225° F
  Hypalon
180psig@225° F
  Nitrile (Buna)
200psig@210° F
  EPDM
180psig@225° F
  Viton®
180psig@225° F
VACUUM
RATINGS
1-1/2"-12" 29"Hg
14"-36"    15"Hg

5Top
 

Pipe
Size
(in)
Face
to
Face
(in)

Axial
Compres-
sion
(in)

Axial
Extension
(in)

Lateral
Deflection
(in)

Degrees
Angular
(degrees)

Degrees
Torsional
(degrees)
1-1/2
10
3-1/2
1-3/4
2
73
14
2
10
3-1/2
1-3/4
2
66
14
2-1/2
10
3-1/2
1-3/4
2
59
12
3
10
3-1/2
1-3/4
2
54
11
4
10
3-1/2
1-3/4
2
45
9
5
10
3-1/2
1-3/4
2
38
9
6
10
3-1/2
1-3/4
2
33
8
8
10
3-1/2
1-3/4
2
25
6
10
12
3-1/2
1-3/4
2
21
6
12
12
3-1/2
1-3/4
2
17
5
14
12
4-3/8
2-1/8
2-1/2
19
5
16
12
4-3/8
2-1/8
2-1/2
16
5
18
12
4-3/8
2-1/8
2-1/2
15
5
20
12
4-3/8
2-1/8
2-1/2
13
5
24
15
5-1/4
2-1/2
3
13
4
30
15
5-1/4
2-1/2
3
11
4
36
15
5-1/4
2-1/2
3
9
3
Temperature/Pressure Ratings
Maximum Pressure-   
  All Materials     250æ psig @>150° F
Maximum Temperature-
  Natural Rubber
225psig@180° F
  Chlorobutyl
180psig@225° F
  Neoprene
180psig@225° F
  Hypalon
180psig@225° F
  Nitrile (Buna)
200psig@210° F
  EPDM
180psig@225° F
  Viton®
180psig@225° F
VACUUM
RATINGS
1-1/2"-12"  15"Hg
14"-36"      10"Hg

5 Top
 

Pipe
Size
(in)
Face
to
Face
(in)

Axial
Compres-
sion
(in)

Axial
Extension
(in)

Lateral
Deflection
(in)

Degrees
Angular
(degrees)

Degrees
Torsional
(degrees)
1-1/2
14
5-1/4
2-5/8
3
81
21
2
14
5-1/4
2-5/8
3
76
20
2-1/2
14
5-1/4
2-5/8
3
70
18
3
14
5-1/4
2-5/8
3
66
16
4
14
5-1/4
2-5/8
3
57
13
5
14
5-1/4
2-5/8
3
50
13
6
14
5-1/4
2-5/8
3
45
12
8
14
5-1/4
2-5/8
3
36
10
10
16
5-1/4
2-5/8
3
30
9
12
16
5-1/4
2-5/8
3
25
8
14
16
6-1/2
3-1/4
3-5/8
27
8
16
16
6-1/2
3-1/4
3-5/8
24
7
18
16
6-1/2
3-1/4
3-5/8
22
7
20
16
6-1/2
3-1/4
3-5/8
20
7
24
20
7-7/8
3-7/8
4 -1/2
20
6
30
20
7-7/8
3-7/8
4 -1/2
16
6
36
20
7-7/8
3-7/8
4 -1/2
13
5
Temperature/Pressure Ratings
Maximum Pressure-   
  All Materials        250æ psig@>150° F
Maximum Temperature-
  Natural Rubber
225psig@180° F
  Chlorobutyl
180psig@225° F
  Neoprene
180psig@225° F
  Hypalon
180psig@225° F
  Nitrile (Buna)
200psig@210° F
 EPDM
180psig@225° F
  Viton®
180psig@225° F
VACUUM
RATINGS
1-1/2"-12"  15"Hg
14"-36"      10"Hg

5Top
 

Pipe
Size
(in)
Face
to
Face
(in)

Axial
Compres-
sion
(in)

Axial
Extension
(in)

Lateral
Deflection
(in)

Degrees
Angular
(degrees)

Degrees
Torsional
(degrees)
1-1/2
18
7
3-1/2
4
86
26
2
18
7
3-1/2
4
81
26
2-1/2
18
7
3-1/2
4
77
22
3
18
7
3-1/2
4
73
20
4
18
7
3-1/2
4
66
16
5
18
7
3-1/2
4
59
17
6
18
7
3-1/2
4
54
15
8
18
7
3-1/2
4
45
12
10
20
7
3-1/2
4
38
11
12
20
7
3-1/2
4
33
9
14
28
8-3/4
4-1/4
5
35
10
16
20
8-3/4
4-1/4
5
31
9
18
20
8-3/4
4-1/4
5
28
9
20
20
8-3/4
4-1/4
5
25
9
24
26
10-1/2
5
6
25
8
30
26
10-1/2
5
6
21
7
36
26
10-1/2
5
6
17
6
Temperature/Pressure Ratings
Maximum Pressure-   
  All Materials            250æ psig@>150° F
Maximum Temperature-
  Natural Rubber
225psig@180° F
  Chlorobutyl
180psig@225° F
  Neoprene
180psig@225° F
  Hypalon
180psig@225° F
  Nitrile (Buna)
200psig@210° F
 EPDM
180psig@225° F
  Viton®
180psig@225° F
VACUUM
RATINGS
1-1/2"-12"  15"Hg
14"-36"      10"Hg

5 Top
 

Pipe
Size
(in)
Face
to
Face
(in)

Axial
Compres-
sion
(in)

Axial
Extension
(in)

Lateral
Deflection
(in)

Degrees
Angular
(degrees)

Degrees
Torsional
(degrees)
1-1/2
21
8-3/4
4 -3/8
5
88
33
2
21
8-3/4
4 -3/8
5
85
32
2-1/2
21
8-3/4
4 -3/8
5
81
28
3
21
8-3/4
4 -3/8
5
78
25
4
21
8-3/4
4 -3/8
5
71
20
5
21
8-3/4
4 -3/8
5
66
21
6
21
8-3/4
4 -3/8
5
60
19
8
21
8-3/4
4 -3/8
5
52
15
10
24
8-3/4
4 -3/8
5
45
14
12
24
10-7/8
4 -3/8
5
39
12
14
24
10-7/8
5
6-1/8
41
12
16
24
10-7/8
5
6-1/8
37
11
18
24
10-7/8
5
6-1/8
34
11
20
24
10-7/8
5
6-1/8
31
11
24
31
13-1/8
6-1/4
7-3/8
31
9
30
31
13-1/8
6-1/4
7-3/8
25
9
36
31
13-1/8
6-1/4
7-3/8
22
8
Temperature/Pressure Ratings
Maximum Pressure-   
  All Materials         250æ psig@>150° F
Maximum Temperature-
  Natural Rubber
225psig@180° F
  Chlorobutyl
180psig@225° F
  Neoprene
180psig@225° F
  Hypalon
180psig@225° F
  Nitrile (Buna)
200psig@210° F
  EPDM
180psig@225° F
  Viton ®
180psig@225° F
VACUUM
RATINGS
1-1/2"-12"  15"Hg
14"-36"      10"Hg
5 Top
 

Pipe
Size
(in)
Face
to
Face
(in)

Axial
Compres-
sion
(in)

Axial
Extension
(in)

Lateral
Deflection
(in)

Degrees
Angular
(degrees)

Degrees
Torsional
(degrees)
1-1/2
24
10-1/2
5-1/8
6
90
41
2
24
10-1/2
5-1/8
6
87
40
2-1/2
24
10-1/2
5-1/8
6
84
34
3
24
10-1/2
5-1/8
6
81
32
4
24
10-1/2
5-1/8
6
76
25
5
24
10-1/2
5-1/8
6
70
26
6
24
10-1/2
5-1/8
6
66
23
8
24
10-1/2
5-1/8
6
57
19
10
28
10-1/2
5-1/8
6
50
18
12
28
10-1/2
5-1/8
6
45
15
14
28
13
6-3/8
7-3/8
47
15
16
28
13
6-3/8
7-3/8
43
13
18
28
13
6-3/8
7-3/8
39
14
20
28
13
6-3/8
7-3/8
36
14
24
36
15-3/4
7-1/2
8-3/4
36
12
30
36
15-3/4
7-1/2
8-3/4
30
11
36
36
15-3/4
7-1/2
8-3/4
25
10
Temperature/Pressure Ratings
Maximum Pressure-   
  All Materials        250æ psig@>150° F
Maximum Temperature-
  Natural Rubber
225psig@180° F
  Chlorobutyl
180psig@225° F
  Neoprene
180psig@225° F
  Hypalon
180psig@225° F
  Nitrile (Buna)
200psig@210° F
  EPDM
180psig@225° F
  Viton ®
180psig@225° F
VACUUM
RATINGS
1-1/2"-12"  15"Hg
14"-36"      10"Hg

5Top
 
 
Pipe
Size
(in)
Arch
Height
(in)
Gusset
Thickness
(in)
Rod
Diameter
(in)
Joint
Thrust
Area
(sq. in)
Maximum Operation Pressure
(psig) for Specified
Number of Rods
2
3
4
5
6
1-1/2
1
1/4
1/2
10
250
-
-
-
-
2
1
3/8
5/8
13
250
-
-
-
-
2-1/2
1
3/8
5/8
16
250
-
-
-
-
3
1
3/8
5/8
20
250
-
-
-
-
4
1
3/8
5/8
28
250
-
-
-
-
5
1
3/8
5/8
38
250
-
-
-
-
6
1
1/2
5/8
50
250
-
-
-
-
8
1
1/2
3/4
79
250
-
-
-
-
10
1
3/4
7/8
113
250
-
-
-
-
12
1
3/4
1
154
240
250
-
-
-
14
1-1/4
3/4
1
214
174
250
-
-
-
16
1-1/4
3/4
1-1/8
269
175
250
-
-
-
18
1-1/4
3/4
1-1/8
330
143
211
250
-
-
20
1-1/4
3/4
1-1/8
398
117
175
234
250
-
24
1-1/2
1
1-1/4
573
100
150
201
250
-
30
1-1/2
1-1/4
1-1/2
855
97
145
193
242
250
36
1-1/2
1-1/2
1-3/4
1195
94
141
188
236
250

 
1. Do not install any of the products in this bulletin at pressures or temperatures higher than the published ratings.

2. 450 Butyl, EPDM & Viton connectors are recommended for intermittent (10 minute maximum exposure per hour) 250°F. service or continuous service at a maximum of 225°F. Use Mercer series 500, 600, HT500 or HT600 as described in bulletin 500-MR7 for continuous temperatures of 230°F and higher.

3. Series 450 must be installed against standard 1/16” raised faced or flat faced flanges. Do not install them against recessed flanges such as Victaulic without calling the factory for proper steel filler flanges. If our rubber flanges do not have full bearing the expansion joint will be damaged and leak or fail.

4. Initial misalignment should be kept to a minimum of 1/8”.

5. Pipe system flanges must be smooth and flat. Screw in brass inserts such as those used in check valves can damage the rubber faces if they project above the cast flange face.

6. Water type check valves must exactly center on the rubber flanges. Valve O.D. and I.D. should be checked for conformance with raised face dimensions

7. Check Chemical Resistance Guide CRG-MR1 for service elastomer compatibility.

5Top

Series 450
©2002 Mercer Rubber Company