The FireEG Endless Fire Collar is a segmented, flexible intumescent fire collar that wraps around plastic pipes of any diameter from 40mm to 160mm — including non-standard and metric pipe sizes where fixed-diameter collars cannot be used. The intumescent strip activates at 180°C, expanding to seal the pipe penetration as the plastic pipe melts during a fire event. Shell in 304 stainless steel. No specialist tools required for installation.
Technical Specifications
| Parameter | Value |
|---|---|
| Pipe Diameter Range | 40–160mm (nominal) |
| Applicable Pipe Materials | PVC, CPVC, PVC with fittings, HDPE, PP (Triplus, Raupiano) |
| Activation Temperature | 180°C (356°F) |
| Shell Material | 304 Stainless Steel |
| Segment Length | 15mm per segment |
| Connection Method | Clip system (click-in, tool-free) |
| Large Diameter Installation | Double-collar butt joint method for 150–160mm pipes |
| Certification | — (for projects not requiring UL listing) |
| Nominal Pipe Diameter (mm) | PVC / PVC+Fitting | HDPE | PP (Triplus/Raupiano) |
|---|---|---|---|
| 40 | 60 | 57 | 57 |
| 50 | 73 | 67 | 67 |
| 56 | — | 73 | — |
| 63 | — | 80 | — |
| 65 | 86 | — | — |
| 75 | — | 92 | 92 |
| 80 | 99 | — | — |
| 90 | 107 | 107 | 107 |
| 100/110 | 127 | 127 | 127 |
| 125 | — | 133 | — |
| 150/160 | 168 | 168 | 168 |
Required Segments
| Nominal Pipe Diameter (mm) | PVC | PVC+Fitting | HDPE | PP (Triplus/Raupiano) |
|---|---|---|---|---|
| 40 | 15 | 17 | 15 | 15 |
| 50 | 18 | 20 | 18 | 18 |
| 56 | — | — | 18 | — |
| 63 | — | — | 20 | — |
| 65 | 21 | 23 | — | — |
| 75 | — | — | 23 | 23 |
| 80 | 24 | 26 | — | — |
| 90 | 26 | 27 | 26 | 26 |
| 100/110 | 29 | 31 | 29 | 29 |
| 125 | — | — | 33 | — |
| 150/160 | 2×40 | — | 2×40 | 2×40 |
Required Clips
| Pipe Size Range | Clips Required |
|---|---|
| 40–90mm | 3 |
| 110–160mm | 4 |
Sealant Requirements
| Pipe Diameter | Annular Gap | Sealant Requirement |
|---|---|---|
| 40–160mm | 0–2mm | Optional |
| 40–110mm | 2–8.5mm | 10mm deep bead of Fire Seal |
| 125–160mm | 0–4mm | 10mm deep bead of Fire Seal |
How the Endless Fire Collar Works
Unlike fixed-size fire collars that are manufactured for specific pipe diameters, the Endless Fire Collar is supplied as a continuous segmented strip that the installer cuts and forms to the required pipe circumference on site.
Each segment is 15mm in length. The installer counts out the required number of segments for the pipe diameter (see table above), cuts to length, wraps the collar around the pipe, and connects the ends using the clip system — no adhesive, no tools, no pre-formed housing required.
When fire occurs and the pipe temperature exceeds 180°C, the intumescent strip within the collar expands inward, compressing and sealing the void left by the melting plastic pipe — restoring the fire compartmentation of the floor or wall assembly.
Installation Overview
Step 1 — Measure and cut
Count the required number of 15mm segments for the nominal pipe diameter (see specification table). Cut the collar to length along the segment line.
Step 2 — Trim the intumescent strip
Trim the intumescent material flush with the cut metal edge to ensurea clean connection.
Step 3 — Wrap around pipe
Clean the outer surface of the plastic pipe. Bend the collar into an approximately circular shape and wrap it around the pipe.
Step 4 — Connect with clips
Insert Tab A into Slot B and Tab B into Slot A. Once the click sound is heard, the connection is secured. Install clips at the specified intervals (3 clips for 40–90mm; 4 clips for 110–160mm).
Step 5 — Seal annular gap (if required)
If the annular gap between pipe and hole exceeds 2mm, apply a 10mm deep bead of FireEG FEG-1000E firestop sealant around the perimeter.
Step 6 — Fix to substrate
Fix the collar to the floor or wall substrate using appropriate anchors for the substrate type (see fixing table). Cutting surface must face toward the mounting wall.
[Download Full Installation Instructions PDF]Substrate Fixing Guide
For HDPE Pipes (40–160mm):
| Substrate | Fixing Type |
|---|---|
| Concrete slab, formwork, concrete wall, masonry wall | 5×30mm Concrete Screw Bolt, or 6×35mm Steel Wedge Anchor, or 6.5×40mm Steel Sleeve Anchor (min. 25mm embedment) |
| Single layer plasterboard lined steel stud wall | Min. M4 Steel Expandable Anchor |
| Double layer plasterboard / shaft liner wall | 10g×38mm Coarse Thread Laminating Screw, or Min. M4 Steel Expandable Anchor |
| Hebel / AAC / Walsc block | 14g-10×65mm Hex Head Screw |
For PVC, PP (Triplus & Raupiano) Pipes (40–160mm):
Same fixing options as above apply. Refer to full data sheet for complete specification.
Special Installation: 150–160mm Pipes
For pipe diameters of 150–160mm, a double-collar installation is required:
- Make two 40-segment collars with clips slotted in at 90° intervals on both.
- Join the two collars together by inverting one collar and aligning
the fixing holes. - Bolt the collars together through the fixing holes using M6 nuts and bolts.
- Place four clips at 90° intervals around the combined collar to use
as fixing points and secure to the substrate.
Endless vs FEG40 — How to Choose
| Endless Fire Collar | FEG40 Fire Collar | |
|---|---|---|
| Pipe diameter | 40–160mm (any size) | 1.5″–4″ (fixed sizes) |
| Shell material | 304 Stainless Steel | Carbon / Galvanized / Stainless steel |
| Installation method | Cut to length on site | Fixed-size, bolt-on |
| Applicable pipes | PVC, HDPE, PP | PVC, CPVC, ABS, FRPP, HDPE |
| UL1479 certification | Not listed | ✓ R40652 / C-AJ-2941 |
| Best for | Metric pipe sizes, non-standard diameters, flexible site conditions | Projects requiring UL1479 documentation |
→ For projects requiring UL1479 certified firestop documentation:
specify FEG40 [→ View FEG40 Fire Collar]
→ For metric pipe sizes, HDPE, or projects without UL requirements:
Endless Fire Collar offers flexible on-site sizingFrequently Asked Questions
Q: Can the Endless Fire Collar be used on copper or cast iron pipes?
No. Like all intumescent fire collars, the Endless Fire Collar is designed for combustible plastic pipes only. Non-combustible metal pipes do not require intumescent collars — the pipe itself does not melt and create an opening during a fire.
Q: Is the Endless Fire Collar suitable for use with pipe insulation?
The collar wraps around the outer surface of the pipe. If insulation is present, please contact us with the pipe and insulation OD to confirm the collar size selection.
Q: What happens if I cut too many segments?
Remove the excess segments before connecting the clips. The segment system allows exact sizing — count carefully using the specification table for your pipe material and nominal diameter.
Q: Does the Endless Fire Collar require fire sealant?
Sealant is optional when the annular gap is 0–2mm. For gaps exceeding 2mm (up to 8.5mm for pipes 40–110mm), a 10mm deep bead of firestop sealant is required. We recommend FireEG FEG-1000E acrylic intumescent sealant for this purpose.
Q: Is the 304 stainless steel shell suitable for corrosive environments?
304 stainless steel provides good corrosion resistance for standard indoor applications including humid environments. For aggressive chemical environments, please contact us.
Q: What is the maximum single collar size before double installation
is required?
Single collar installation applies for pipe diameters up to 125mm.
Double collar butt-joint installation is required for 150–160mm pipes.
Related Products:
[→ FEG40 Intumescent Fire Collar – UL1479 listed, 1.5″–4″]
[→ FEG-1000E Acrylic Firestop Sealant – for annular gap sealing]
[→ HGYY-TW712 Intumescent Strip – OEM collar wrap component]
[→ View All Passive Fire Protection Products]