Pipe Sealing Bellows
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MULTIDIMENSIONAL KT-Type Pipe Sealing Bellow
The main advantage of KT-type sealing bellows is the low logistics and storage cost, since only five dimensional types cover the full range of diameters from DN 100 to DN 600. Each type features two preformed diameter steps on the side facing the casing pipe. The included stainless steel clamps can be used across the entire dimensional range.
| Details | |
|---|---|
| Material: | EPDM |
| Thickness: | approx. 3–4 mm |
| Shore A Hardness: | 60 ± 5 |
| Carrier pipe sizes: | 10 mm – 508 mm |
| Casing pipe sizes: | 110 mm – 610 mm |
| Offset compensation: | Yes |
| Special dimensions: | not available |
| Clamp material: | stainless steel |
DU-Type Pipe Sealing Bellow
DU-type sealing bellows are always supplied in the exact dimensions needed for the specific carrier pipe and casing pipe combination. No further adjustment on site is required.
| Details | |
|---|---|
| Material: | EPDM |
| Thickness: | approx. 5–6 mm |
| Shore A Hardness: | 50 ± 5 |
| Carrier pipe sizes: | 20 mm – 762 mm |
| Casing pipe sizes: | 90 mm – 965 mm |
| Offset compensation: | Yes |
| Special dimensions: | not available |
| Clamp material: | stainless steel |
KG-KO Type Pipe Sealing Bellow
KG/KO-type sealing bellows have a conical shape. Due to their individually manufactured design, they are available for nearly all sizes and combinations of carrier pipe and casing pipe. If necessary, size adjustments can be made on site.
| Details | |
|---|---|
| Standard material: | neoprene rubber |
| Optional material: | silicone (KG only) and NBR |
| Thickness: | approx. 2–3 mm |
| Shore A Hardness: | 65 ± 5 |
| Carrier pipe sizes: | 32 mm – 1320 mm |
| Casing pipe sizes: | 48.3 mm – 2000 mm |
| Offset compensation: | up to 500 mm (larger upon request) |
| Special dimensions: | available upon request |
| Clamp material: | stainless steel |
HA Type Pipe Sealing Bellow
HA-type gaskets (closed version only) are used exclusively for sealing small utility pipes during residential construction.
| Details | |
|---|---|
| Material: | EPDM |
| Thickness: | approx. 2–3 mm |
| Shore A Hardness: | 50 ± 5 |
| Carrier pipe sizes: | 25 mm – 50 mm |
| Casing pipe sizes: | 50 mm – 90 mm |
| Offset compensation: | No |
| Special dimensions: | not available |
| Clamp material: | stainless steel |
STM Type Pipe Sealing Bellow
STM seamless sleeves are manufactured according to the customer's specific requirements. They are available for nearly all pipe sizes. This sleeve type is ideal for situations with extreme misalignments or when multiple outlets are needed, for example for auxiliary cables. A reinforced version (STMV) is available for higher mechanical loads.
| Details | |
|---|---|
| Material: | Rottolin |
| Thickness: | STM approx. 6–8 mm, STMV approx. 9–11 mm |
| Shore A Hardness: | 50 ± 5 |
| Carrier pipe sizes: | 50 mm – 1200 mm |
| Casing pipe sizes: | 200 mm – 1600 mm |
| Offset compensation: | Yes |
| Special dimensions: | available on request |
| Clamp material: | stainless steel |
FW Type Pipe Sealing Bellow
FW-type sealing bellows are designed specifically to provide a pressure-tight seal of the annular space between the carrier and casing pipes. The bellow is made of high-quality Rottolin with a thickness of 9–11 mm, dimensionally stable and tested up to 0.5 bar. Thanks to their exceptional flexibility, these sleeves allow axial and radial movements between the casing and carrier pipe. To maintain gasket integrity, the space between tangent points of the pipes should not exceed 70 mm. A special permanently elastic adhesive is sprayed onto the inner side of the bellow collar, which is then secured over the casing and carrier pipe using stainless steel straps.
| Details | |
|---|---|
| Material: | Rottolin |
| Thickness: | 9–11 mm |
| Color: | red |
| Shore A Hardness: | approx. 50° |
| Tensile strength: | 11 N/mm² |
| Elongation at break: | 400 % |
| Initial tear resistance: | 27 N/mm |
| Max continuous operating temperature: | 55°C |
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