Kor-N-Seal® II 306 Series Pipe-to-Manhole Connector

Allows you to fit large diameter pipe into the smallest possible manhole structures

Kor-N-Seal II 306 Series. Trelleborg

Seal design & function

The patented 4” wide Stainless Steel Korband is able to overcome the curvature of smaller sized manholes and provide a watertight seal.

kor-N-Seal 306 Series. Trelleborg

Features

  • Can be used in cored or formed holes 

  • Meets the specifications of ASTM C923 

  • Easy to install

Sizing Chart

P/N
Suggested
Pipe O.D Range

Hole Size
Range 
Connector Dimensions 
Pipe
Clamp 
Min. 
Manhole
Size
A B C D Qty P/N
S306-22
S306-22L
17.625-18.500
21.98-22.13 19.875   19   10.5  2 l-318  36/4
18.500-19.625  20  2
S306-24
S306-24L
19.625-20.500
23.98-24.13 21.875   21  10.5
 4 l-180
 36/4
20.500-21.625
 22  4
S306-26
S306-26L
21.625-22.500
26.00-26.20 23.875   23  10.5
 4 l-190
 36/4
22.500-23.625  24  4
l-218
S306-28
S306-28L
23.625-24.500
26.00-26.20
25.875   25  10.5
 4
l-218
 48/5
24.500-25.625
 26  4
S306-30
S306-30L
25.625-26.500
30.00-30.20 27.875   27  10.5
 4
l-218
 48/5
26.500-27.625   28  4
l-242
S306-30L-32
26.500-27.625
32.00-32.20
29.875   28  10.5
 4
l-212
 48/5
S306-32
S306-32L
27.625-28.500
32.00-32.20
28.875
 29  10.5
 4
l-242
 48/5
28.500-29.625   30  4
S306-34
S306-34L
29.625-30.500
34.00-34.20
31.875
 31  10.5
 4
l-258
 48/5
30.500-31.625   32  4
S306-36
S306-36L
31.625-32.500
36.00-36.20
33.250  33  10.5
 4
80667
Power Gear
 60/6
32.500-33.000
 34  4
S306-36-STORM
S306-36L-STORM
31.625-32.500
36.00-36.20
33.875   33  10.5
 4
l-282   60/6
32.500-33.625
 34  4
S306-38
S306-38L
33.625-34.500
38.00-38.20
35.250   35  10.5
 4
80667
Power Gear 
 60/6
34.500-35.000   36  4
S306-38LS-PG
34.625-35.625
38.00-38.20
35.875  36  10.5
 4
80667
Power Gear
 60/6
S306-38-STORM
S306-38L-STORM
33.625-34.500 38.00-38.20
35.875
 35  10.5
 4 l-282
 60/6
34.500-35.625  36  4 l-306
48" Round
48" Round
P/N
Suggested Pipe
O.D Range

Hole Size Range  Connector
Dimensions 
Pipe
Clamp
Min.
Manhole
Size
A B C D Qty  P/N
S306-40
S306-40L 
35.625-36.500
40.00-40.20
37.250 37 10.5
4
80667
Power Gear
60/6
36.500-37.000  38 4
S306-40-STORM
S306-40L-STORM
35.625-36.500
40.00-40.20
37.875  37 10.5
4
l-306 60/6
36.500-37.625  38 4
S306-42
S306-42L 
37.625-38.500  42.00-42.20
39.250  39 10.5
6 80667
Power Gear
72/7
38.500-39.000
40 6
S306-42-STORM
S306-42L-STORM
37.625-38.500  42.00-42.20
39.875   39 10.5
4
l-318 72/7
38.500-39.625
40 4
S306-44
S306-44L 
39.625-40.500
44.00-44.20
41.250  41 10.5
8 80667
Power Gear 
72/7
40.500-41.000  42 8
S306-44LS-PG
40.500-41.625  44.00-44.20
41.875   42 10.5
8 80667
Power Gear 
72/7
S306-44-STORM
S306-44L-STORM
39.625-40.500
44.00-44.20
41.875   41 10.5
4
l-348  72/7
40.500-41.625  42 4
S306-46
S306-46L
41.625-42.500  46.00-46.20
43.250  43 10.5
6 80667
Power Gear 
72/7
42.500-43.000  44 6
S306-46-STORM
S306-46L-STORM
41.625-42.500
46.00-46.20
43.875 
43 10.5
4
l-348   72/7
42.500-43.625  43 4
S306-48
S306-48L 
43.625-44.500
48.00-48.20
45.250   45 10.5
6 80667
Power Gear 
72/7
44.500-45.000 46 6
S306-48-STORM
S306-48L-STORM
43.625-44.500
48.00-48.20
45.875   45 10.5
6 l-242
72/7
44.500-45.625
46 6 l-258 

48" Round
48" Round

Recommendations and advice

Kor-N-Seal II 306 Series. Trelleborg

Dimensions

All data in inch
Subject to change for technical reasons

Corrugated Pipe Adapter. Trelleborg

Using Corrugated Pipes

Adapters are required when using Corrugated Pipe. 

Refer to the Corrugated Pipe Adapter Datasheet for details. 

Downloads

More detailed information

Kor-N Seal II 306 Series_Datasheet

 

Download (pdf)

Kor-N-Seal-306 Series_Overhang chart

 

Download (pdf)

Corrugated Pipe Adapter_Data Sheet

 

Download (pdf)

Kor-N-Seal TechSpecs

 

Download (pdf)

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