Intumescent Wrap Strip FiWS
Universal intumescent wrap strip for sealing combustible services
Applications
- Non-metallic service: PVC 14“ (355 mm), cPVC 8“ (203 mm), ABS 6“ (152 mm), FRPP 4“ (102 mm)
- Insulated service: Steel 10“ (254 mm), Iron 10“ (254 mm), Copper 4“ (102 mm), Glass fibre 3“ (75 mm), AB/PVC flexible foam 1“ (25 mm)
- Cable bunches: 3“ (76 mm)
Advantages
- Efficient and effective for sealing of pipe openings in floors and walls
- Easy to fit
- Moisture resistant
- Freeze-thaw characteristics
- No mechanical fixing required
- Economical solution
- Up to 4 hours fire resistance
- Asbestos and halogen free
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How it works
Functioning

FiWS is a flexible, intumescent graphitebased synthetic compound strip, which has been designed to be installed in both vertical and horizontal applications.
FBB are highly elastiFiWS has been developed as a PRE or cast-in FireStop solution, and has been designed to work with the fischer Universal Collar for retro fitting or surface mounted applications.
For large openings, the FiWS can be used in conjunction with the FFSC.

TECHNICAL DATA
Item no. | Dimensions B x L x H | Sales unit [pcs] | |
Item | |||
FiWS-2 | 531397 | 50 mm x 6 mm x 5.48 m / 2˝x 1/4˝ x 18˝ | 1 |
Universal Collar 2 | 536053 | 51 mm x 15 m / 2“ x 50 ft | 1 |
Technical data
State | solid |
Odour | odourless |
Density | approx. 1.3 kg/m³ |
Expansion ratio | 1 : 40 |
Significant expansion occurs at temperature | > 190 °C |
Max. recom. pipe-Ø | < 355 mm |
Flame spread (ASTM E 84 – UL723) | 5 |
Smoke index (ASTM E 84 – UL723) | 5 |
Colour | black |
Both sides of the wall


Botttom of floor


Application data
FiWS – typical configuration | ||
Pipe diameter [mm] | No. of layers | Length per stacks [mm] |
50 | 1 | 200 |
75 | 2 | 580 |
100 | 2 | 740 |
150 | 3 | 1640 |
200 | 4 | 2890 |
305 | 4 | 4210 |