Spool Type

Rubberexpansionjoint.com ST Style molded rubber expansion joints are designed with a metal reinforcing collar molded into the necks of the carcass. This allows the ST style to use light weight split retaining rings (sold separately) to back-up the molded integral rubber flange that is molded into the ST. The ST style is also available in a filled arch design know as style STF. The ST can be made custom with multiple arches to improve movement, non standard flanges or enlarge flange type (different size flanges on each end), non standard lengths, as a reducer type, or with permanent offsets built into the joint. Larger sizes are available on request. The ST and STF are available on request to meet the requirements of the U.S.C.G. The STF style or filled arch will reduce allowable movements by 50%. It will also increase spring rates by 4 times that of the ST style. The filled arch design is a great option to reduce turbulence and eliminates the ability of solids to settle and remain in the arch. The “filler” in the filled arch is made from a low durometer soft rubber material that is bonded to the ID of the traditional arch. The ID of the STF has a one piece seamless inner tube eliminating the ability of the filler to come loose in service.
Open Arch Filled Arch U.S. COAST GUARD APPROVED: Unthreaded Bolt Holes
SPOOL TYPE (ST)
Diminsions Movement Distance Operating Condition Weight (LBS)
Pipe Size O'all Length Flange OD Bolt Circle No. of Bolt Holes Bolt Hole Size Retaining Ring Thickness Axial Compression Axial Extension Lateral Deflection Angular Deflection Max w.p. (psi)-3,-4 Max Vacuum (in. of Hg)-5 Exp. Joint + Retaining Ring = Total Control Unit (2 Rod)-1,-2
2" 6" 6" 4 3/4" 4 3/4" 3/8" 7/16" 1/4" ±1/2" 19° 150 26 8.0+3.50=11.50 6.75
2 1/2" 6" 7" 5 1/2" 4 3/4" 3/8" 7/16" 1/4" ±1/2" 15° 150 26 11.5+5.50=17.00 7.50
3" 6" 7 1/2" 6" 4 3/4" 3/8" 7/16" 1/4" ±1/2" 13° 150 26 13.0+5.75=18.75 7.75
4" 6" 9" 7 1/2" 8 3/4" 3/8" 7/16" 1/4" ±1/2" 10° 150 26 16.0+7.00=23.00 7.00
5" 6" 10" 8 1/2" 8 7/8" 3/8" 7/16" 1/4" ±1/2" 150 26 19.0+7.75=26.75 7.50
6" 6" 11" 9 1/2" 8 7/8" 3/8" 7/16" 1/4" ±1/2" 150 26 21.0+9.00=30.00 8.50
8" 6" 13 1/2" 11 3/4" 8 7/8" 3/8" 11/16" 3/8" ±1/2" 150 26 29.0+15.75=44.75 11.25
10" 8" 16" 14 1/4" 12 1" 3/8" 11/16" 3/8" ±1/2" 150 26 45.0+16.25=61.25 24.50-1
12" 8" 19" 17" 12 1" 3/8" 11/16" 3/8" ±1/2" 150 26 62.0+22.75=84.75 26.00-1
14" 8" 21" 18 3/4" 12 1 1/8" 3/8" 11/16" 3/8" ±1/2" 150 15 75.0+27.00=102.00 31.00-1
16" 8" 23 1/2" 21 1/4" 16 1 1/8" 3/8" 11/16" 3/8" ±1/2" 150 15 90.0+33.00=123.00 38.50-2
18" 8" 25" 22 3/4" 16 1 1/4" 3/8" 11/16" 3/8" ±1/2" 150 15 92.0+36.50=128.50 41.00-2
20" 8" 27 1/2" 25" 20 1 1/4" 3/8" 13/16" 7/16" ±1/2" 150 15 111.0+40.00=151.00 41.75-2
24" 10" 32" 29 1/2" 20 1 3/8" 3/8" 13/16" 7/16" ±1/2" 150 15 145.0+48.00=193.00 58.75-2

SPOOL TYPE: FILLED ARCH (STF)
Diminsions Movement Distance Operating Condition Weight (LBS)
Pipe Size O'all Length Flange OD Bolt Circle No. of Bolt Holes Bolt Hole Size Retaining Ring Thickness Axial Compression Axial Extension Lateral Deflection Angular Deflection Max w.p. (psi)-3,-4 Max Vacuum (in. of Hg)-5 Exp. Joint + Retaining Ring = Total Control Unit (2 Rod)-1,-2
2" 6" 6" 4 3/4" 4 3/4" 3/8" 7/32" 1/8" ±1/4" 9.5° 150 26 9.0+3.50=12.50 6.75
2 1/2" 6" 7" 5 1/2" 4 3/4" 3/8" 7/32" 1/8" ±1/4" 7.5° 150 26 12.5+5.50=18.00 7.50
3" 6" 7 1/2" 6" 4 3/4" 3/8" 7/32" 1/8" ±1/4" 6.5° 150 26 14.5+5.75=20.25 7.75
4" 6" 9" 7 1/2" 8 3/4" 3/8" 7/32" 1/8" ±1/4" 150 26 17.5+7.00=24.50 7.00
5" 6" 10" 8 1/2" 8 7/8" 3/8" 7/32" 1/8" ±1/4" 150 26 21.0+7.75=28.75 7.50
6" 6" 11" 9 1/2" 8 7/8" 3/8" 7/32" 1/8" ±1/4" 150 26 23.0+9.00=32.00 8.50
8" 6" 13 1/2" 11 3/4" 8 7/8" 3/8" 11/32" 3/16" ±1/4" 150 26 32.0+15.75=47.75 11.25
10" 8" 16" 14 1/4" 12 1" 3/8" 11/32" 3/16" ±1/4" 2.5° 150 26 49.5+16.25=65.75 24.50-1
12" 8" 19" 17" 12 1" 3/8" 11/32" 3/16" ±1/4" 2.5° 150 26 68.5+22.75=91.25 26.00-1
14" 8" 21" 18 3/4" 12 1 1/8" 3/8" 11/32" 3/16" ±1/4" 150 15 82.5.0+27.00=109.50 31.00-1
16" 8" 23 1/2" 21 1/4" 16 1 1/8" 3/8" 11/32" 3/16" ±1/4" 150 15 99.0+33.00=132.00 38.50-2
18" 8" 25" 22 3/4" 16 1 1/4" 3/8" 11/32" 3/16" ±1/4" 1.5° 150 15 101.5+36.50=138.00 41.00-2
20" 8" 27 1/2" 25" 20 1 1/4" 3/8" 13/32" 7/32" ±1/4" 1.5° 150 15 122.5+40.00=162.50 41.75-2
24" 10" 32" 29 1/2" 20 1 3/8" 3/8" 13/32" 7/32" ±1/4" 1.5° 150 15 159.5+48.00=207.50 58.75-2
Size
100% EPDM
100% Neoprene
100% Butyl
Retaining Rings
Retaining Rings
Control Unit (Control Rods)
Control Unit (Control Rods)
Pipe
Part No.
Price
Part No.
Price
Part No.
Price
Carbon Steel Zinc Plated Part No.
Price (Set=4)
T-304      
Part No.
Price (Set=4)
Carbon Steel Zinc Plated Part No. 
Price (Set)
T-304     
Part No. 
Price (Set)

Open Arch

2"
 $191.46  $180.82  $232.57  $10.17  $116.75  $32.88  $76.72
2 1/2"
 $198.00  $187.00  $293.90  $12.21  $161.05  $33.96  $79.24
3"
 $199.64  $188.55  $242.70  $17.79  $184.80  $33.96  $79.24
4"
 $193.36  $182.61  $235.13  $20.34  $236.33  $33.96  $79.24
5"
 $232.22  $220.26  $284.04  $24.42  $262.93  $33.96  $79.24
6"
 $291.00  $274.83  $353.97  $25.41  $298.48  $38.67  $90.23
8"
 $353.33  $333.70  $430.02  $34.89  $443.25  $43.71  $101.99
10"
 $442.83  $417.28  $539.21  $45.15  $547.95  $72.78  $169.82
12"
 $616.12  $580.58  $751.27  $68.64  $784.28  $83.25  $194.25
14"
 $748.83  $718.87  $913.40  $88.89  $1,040.25  $107.46  $250.74
16"
 $853.93  $819.77  $1,043.35  $111.87  $1,284.88  $167.46  $390.74
18"
 $939.23  $901.66  $1,153.35  $157.62  $1,219.35  $190.26  $443.94
20"
 $1,105.65  $1,061.42  $1,357.85  $186.42  $1,683.25  $190.26  $443.94
24"
 $1,557.38  $1,495.08  $1,906.13  $223.74  $1,876.90  $228.18  $532.42

Filled Arch

2"
 $214.05  $202.16  $259.75  $10.17  $116.75  $32.88  $76.72
2 1/2"
 $221.04  $208.76  $267.55  $12.21  $161.05  $33.96  $79.24
3"
 $223.32  $210.91  $271.12  $17.79  $184.80  $33.96  $79.24
4"
 $216.32  $204.30  $262.65  $20.34  $236.33  $33.96  $79.24
5"
 $261.17  $246.66  $317.57  $24.42  $262.93  $33.96  $79.24
6"
 $325.63  $307.54  $395.52  $25.41  $298.48  $38.67  $90.23
8"
 $395.51  $373.54  $480.64  $34.89  $443.25  $43.71  $101.99
10"
 $495.85  $467.24  $602.84  $45.15  $547.95  $72.78  $169.82
12"
 $690.46  $650.62  $840.42  $68.64  $784.28  $83.25  $194.25
14"
 $872.28  $837.38  $1,061.55  $88.98  $1,040.25  $107.46  $250.74
16"
 $996.00  $956.16  $1,213.85  $111.87  $1,284.88  $167.45  $390.74
18"
 $1,099.83  $1,055.83  $1,346.05  $157.62  $1,219.35  $190.26  $443.94
20"
 $1,294.80  $1,243.01  $1,584.85  $186.42  $1,683.25  $190.26  $443.94
24"
 $1,818.95  $1,746.19  $2,220.03  $223.74  $1,876.90  $228.18  $532.42

U.S. COAST GUARD APPROVED: Unthreaded Bolt Holes

100% EPDM
 
Retaining Rings
Retaining Rings
Control Unit (Control Rods)
Control Unit (Control Rods)
SIZE
OPEN ARCH
Price
FILLED ARCH
Price
Zinc Plated
Price
T-304
Price
Zinc Plated
Price
T-304
Price
2"
 $196.46  $219.05  $10.17  $116.75  $32.88  $76.72
2 1/2"
 $203.00  $226.04  $12.21  $161.05  $33.96  $79.24
3"
 $204.64  $228.32  $17.79  $184.80  $33.96  $79.24
4"
 $198.36  $221.32  $20.34  $236.33  $33.96  $79.24
5"
 $238.22  $266.17  $24.42  $262.93  $33.96  $79.24
6"
 $296.00  $330.63  $25.41  $298.48  $38.67  $90.23
8"
 $358.33  $400.51  $34.89  $443.25  $43.71  $101.99
10"
 $447.83  $500.85  $45.15  $547.95  $72.78  $169.82
12"
 $621.12  $695.46  $68.64  $784.28  $83.25  $194.25
14"
 $753.83  $877.28  $88.98  $1,040.25  $107.46  $250.74
16"
 $858.93  $1,001.00  $111.87  $1,284.88  $167.46  $390.74
18"
 $944.23  $1,104.83  $157.87  $1,219.35  $190.26  $443.94
20"
 $1,110.65  $1,299.80  $186.42  $1,683.25  $190.26  $443.94
24"
 $1,562.38  $1,823.95  $223.74  $1,876.90  $228.18  $532.42