Flame-retardant
CARBOFORM®/EN/ISO
Oil- and petrol-resistant pressure hose, flame-retardant and self-extinguishing. Specifically designed as fuel hose for leisure boats and yachts where fire safety is critical. NBR inner tube tolerates up to 50% aromatic content. Compliant with EN and ISO standards for marine fuel installations.
- Self-extinguishing
- NBR inner tube
- Antistatic
- −35 to +80 °C
- ISO 7840
- Cut to length
Why this hose?
CARBOFORM®/EN/ISO is specifically designed for fuel installations on leisure boats and yachts. ISO 7840 is the international standard for onboard fuel hoses — and only hoses with this certification may be used in commercial marine fuel installations.
The self-extinguishing property is critical in marine environments — a fire onboard can be catastrophic and every material component must actively counteract fire spread.
Where it is used
On leisure boats and yachts it sits throughout the fuel system — from tank to engine.
In yacht industry new builds it's the standard choice for fire-safe installations.
In everyday talk we call it a "marine fuel hose" or "ISO 7840" — it's the standardised yacht hose.
Technical specifications
Technical specifications for CARBOFORM®/EN/ISO.
| Material | NBR inner tube, flame-retardant exterior |
|---|---|
| Self-extinguishing | Yes |
| Resistance | <109 Ω |
| Temperature | −35 to +80 °C |
| Conformity | ISO 7840, REACH, RoHS |
| Cut to length | Yes |
| Manufacturer SKU group | 3305 |
Dimensions and ordering
Standard dimensions for CARBOFORM®/EN/ISO.
| Inner Ø |
Outer Ø |
Wall thickness |
Working pressure |
Burst pressure |
Max. length |
Weight |
Article no. |
|---|---|---|---|---|---|---|---|
| 6 | 15 | 4.5 | 3 | 14 | 40 | 0.24 | 3305006000 |
| 8 | 16 | 4 | 3 | 14 | 40 | 0.25 | 3305008000 |
| 10 | 18 | 4 | 3 | 14 | 40 | 0.28 | 3305010000 |
| 12 | 21 | 4.5 | 3 | 10 | 40 | 0.36 | 3305012000 |
| 16 | 25 | 4.5 | 3 | 10 | 40 | 0.45 | 3305016000 |
| 19 | 28 | 4.5 | 3 | 10 | 40 | 0.5 | 3305019000 |
Fields without a value (—) are not specified in the manufacturer's factsheet. Overpressure and underpressure values are recommended operating limits; the product can be subjected to higher loads on request. Bend radius is measured along the inside of the hose bend.
Standards and compliance
CARBOFORM®/EN/ISO conforms to:
- ISO 7840. International standard for onboard fuel hoses on vessels.
- REACH and RoHS.
Documentation and downloads
Additional documents about this hose, its compliance and installation. Click to download as PDF in a new tab.
Help with material selection
If you're choosing a hose and are unsure about the right resistance level or zone classification, these two articles are a good place to start:
The invisible weakest link
Why a conductive or antistatic hose isn't sufficient on its own — and what grounding means for the complete system.
Know your ohm
The difference between antistatic and conductive, which resistance limits apply where, and how to measure them correctly.
Industries that use it
CARBOFORM®/EN/ISO is specialised for marine fuel installations:
In yacht industry and leisure boat building it's the standard choice due to ISO 7840 compliance.
The self-extinguishing property is a regulatory and practical necessity on any onboard fuel hose.
Custom lengths and assemblies
The hose is delivered on rolls and cut to length with couplings as a finished assembly.
For serial deliveries we can establish consistent assembly.
Frequently asked questions
What is ISO 7840?
International standard for onboard fuel hoses on vessels. Specifies requirements for material, fire resistance and electrical conductivity. Often a regulatory requirement for commercial marine installations.
What does self-extinguishing mean?
The material stops burning within a defined time interval when the ignition source is removed. In marine context it's a critical safety property.
Does it tolerate both diesel and petrol?
Yes. The NBR inner tube tolerates both diesel and unleaded petrol (up to 50% aromatic).
Does it need grounding?
Yes. The antistatic property only works with correct grounding.
Is it ATEX-approved?
Antistatic-marked but not formally ATEX. ISO 7840 is the marine-relevant certification.
Can I get it with marine couplings?
Yes. We fit DIN 86250 or other marine standard couplings as a finished assembly.