Filcoflex Silicone Weighing Bellows are created from compression-molded translucent Shore A 60° silicone with excellent strength and flexibility.
Weighing Bellows are used in systems with load cells, like gravimetric feeders, loss-in-weight feeders or dosing equipment. They act as decoupling compensators that generate low reaction force against vibrations from moving parts that may otherwise impact weighing results of sensitive weighing equipment. This classic weighing bellows is popular among OEM manufacturers for its outstanding lateral and axial flexibility, ensuring high powder metering accuracy and quality end products.
SIL WB W is ideal for applications with accurate weighing requirements and control of consumption. For instance, when connecting weighing, filtering, and dosing equipment to supply lines or packaging equipment.
| Material | Length | Diameter |
|---|---|---|
| Silicone | 90 | 50 |
| Silicone | 90 | 60 |
| Silicone | 90 | 75 |
| Silicone | 90 | 100 |
| Silicone | 90 | 114 |
| Silicone | 90 | 140 |
| Silicone | 90 | 150 |
| Silicone | 90 | 168 |
| Silicone | 90 | 200 |
| Silicone | 90 | 219 |
| Silicone | 90 | 250 |
| Silicone | 90 | 300 |
| Silicone | 90 | 350 |
| Property | Specification |
|---|---|
| Material | Silicone |
| Color | Translucent White |
| Wall Thickness | 1 mm (single arch bellows) / 2 mm (straight end sleeves) |
| Finish | Matte |
| Hardness (Shore A) | 60° (±5° tolerance) — ISO 48-4:2018 / DIN ISO 7619-1 compliant |
| Surface Roughness (Inside End) | ± 0.80 Ra |
| Surface Roughness (Inside Bellows) | ± 0.70 Ra |
| Surface Roughness (Outside End) | ± 0.80 Ra |
| Surface Roughness (Outside Bellows) | ± 0.70 Ra |
| Elongation to Failure | 240% |
| Breathable | No |
| Air-tight | Yes |
| Dust-tight | Yes |
| Property | Specification |
|---|---|
| ATEX Rating | Safe for use in ATEX Zone 20, 21, 22 only for lengths < 100 mm and Minimum Ignition Energies (MIE) > 1 mJ |
| Limitations | Not for use with flammable gases or vapors, hybrid gas/vapor/dust-air mixtures, or dusts with MIE < 1 mJ |
| Additional Information | Consult this product’s explosion safety report for more details |
| Property | Specification |
|---|---|
| Available with Stainless Steel Rings | No |
| Available with Plastic Rings | No |
| Available as Tool Release | Standard (with Filcoflex accessories) |
| Available as One-Ended Connector | No |
| Quick Access Port Option | No |
| Accessories | KLB20 Hoseclamp |
| Marking and Identification | No |
| Earthing and Grounding | No |
| Feature | Value |
|---|---|
| Vibration | Yes |
| ATEX | Yes |
| Weighing & Dosing | Yes |
| Hoseclamp Fitted | Yes |
Are you curious about the product?
Filcoflex specializes in design
and manufacture of polyurethane,
silicone, rubber, and textile flexible
connections for bulk product
transport.
