Fernco (previously known as Flexseal) Bushes, are primarily used as additional components in conjunction with Shear Banded Couplings or Lateral Connection Saddles in drainage systems. Their main function is to increase the outside diameter of a pipe to ensure a snug and secure fit when the existing pipe is too small for the coupling or saddle being used. This is particularly useful in scenarios where pipes with significantly different diameters need to be connected.
Key Features
Versatile Application: Ideal for use when there is a notable difference in the outside diameters of pipes being connected.
Customizable: They can be manufactured to meet specific site and application requirements, offering tailored solutions.
High-Performance Seal: Ensures a high-performance seal on low-pressure pipes, maintaining the integrity of the connection.
Standard Compliance: Manufactured to meet WIS 4-41-01 standards and conform to BS EN 681-1 and BS EN 295-1:2013.
Specifications
Size Range: Available in a range from 11mm to 265mm, accommodating various pipe sizes.
Material: Made from high-quality EPDM for durability and reliability.
Temperature Range: Suitable for temperatures from -50°C to 80°C continuously, and up to 100°C intermittently.
SKU
Fernco Code
Pipe OD Min/Max (mm)
Bush Thickness (mm)
Pipe OD Increase (mm)
Bush OD Min/Max (mm)
484458
B09-37
30 - 37
9
18
48 - 55
484459
B06-43
35 - 40
6
12
47 - 52
484460
B23-65
55 - 65
23
46
101 - 111
484461
B17-76
65 - 76
17
34
99 - 110
484462
B08-95
85 - 95
8
16
101 - 111
484463
B12-95
85 - 95
12
24
109 - 119
484464
B06-102
92 - 102
6
12
104 - 114
484465
B08-105
95 - 105
8
16
111 - 121
484466
B08-115
105 - 115
8
16
121 - 131
484467
B15-115
105 - 115
15
30
135 - 145
484470
B07-132
122 - 132
7
14
136 - 146
484468
B12-125
115 - 125
12
24
139 - 149
484469
B19-132
122 - 132
19
38
160 - 170
484471
B08-160
150 - 160
8
16
166 - 176
484477
B06-178
168 - 178
6
12
180 - 190
484473
B12-166
156 - 166
12
24
180 - 190
484472
B16-164
154 - 164
16
32
186 - 196
484475
B26-168
158 - 168
26
52
210 - 220
484476
B08-170
160 - 170
8
16
176 - 186
484478
B08-180
170 - 180
8
16
186 - 196
484479
B33-205
195 - 205
33
66
261 - 271
484481
B08-265
255 - 265
8
16
271 - 281
484482
B16-250
240 - 250
16
32
272 - 282
How and Where to Install
Fernco Bushes are straightforward to install:
With Shear Banded Couplings: Check the maximum tolerance between the outside diameters of the pipes to be connected. If the difference exceeds this tolerance, use a bush to fill the gap on the smaller pipe.
With Lateral Connection Saddles: When connecting pipes (other than clay) into saddles designed for thicker-walled materials, use a bush to increase the outside diameter of the pipe to fit within the saddle’s tightening range.
Fit the Bush: Place the bush over the smaller diameter pipe to fill the void between the pipe and the inside of the coupling or saddle.
Compliance Note: For adopted drainage pipelines, as specified under WIS 4-41-01, a Shear Banded Coupling and Bush should be used to ensure alignment and protection against vertical shear loads.
Downloads
Fernco Bushes Technical Datasheet
If you require any further information, our excellent customer service team is here to help so please call us on 01794 835835.
