Fire Retardant Hose

Silflex flame retardant hose has been specifically designed for the demanding requirements of mass transit applications.

Silflex flame retardant hose has been specifically designed for the demanding requirements of mass transit applications. Generally it is used in applications that require the material to be flame-retardant and give off low smoke & low toxic fumes. This compound has been tested to EN 45545-2:2020 and is classified as follows: R22 & R23 – HL1, HL2 & HL3. It is classified as category II AGAINST BS 6853 & AS F1,IO against NFF16-101.

Engineering Options

Wire Reinforcement

A wire helix between the plies helps to prevent collapse in negative pressure conditions.

Part Marking

Part marking with Silflex or customer logos and part numbers assists with product identification and traceability.

Anti Abrasion Sleeves

Anti Abrasion Sleeves to protect against localised abrasion.

Location Marking

Marks can be added to the hose to specify where components are to be placed such as clips helping speed up installation.

Construction

Plies of flame-retardant silicone, reinforced with polyester fabric. The number of plies will vary depending on the working pressure, bore size, and required wall thickness. A galvanised spring steel wire helix may also be added for high or low pressure applications, or where extra flexibility is required.

Hose Design

Almost all applications have unique requirements: from routing paths, temperature zones, pressure demands, chemical exposure, vibration levels, installation constraints, or regulatory considerations. Whether our customers require one-off prototypes, full OEM production runs or complex multi-branch assembly – we design hose solutions that meet all of these needs.

Our Hose Design Capabilities

Custom shapes, bends, reducers, elbows, and multi-branch configurations
Design for tight routing paths and confined spaces
Pressure-rated and vacuum-rated constructions
Specification of reinforcement materials (polyester, Nomex®, wire helix, etc.)
Integration of specialist liners: Silgiene® and FKM/Viton Profuel
CAD-based design and dimensional modelling
Support with prototype development and validation

From high-temperature turbocharger hoses to sterile pharmaceutical tubing, our design team ensures your solution is engineered precisely for its environment.

Production Volumes

Thanks to our fully in-house manufacturing capability, Silflex offers exceptional flexibility in production volumes. We support a diverse customer base with requirements ranging from rapid-turnaround prototypes and low-volume specialist builds to high-volume, repeat production for major OEM programmes. Our end-to-end, self-contained operation allows us to deliver what many suppliers can’t – a responsive, tailored service that adapts to each customer’s exact specifications. Whether the need is bespoke or large-scale, Silflex ensures every silicone hose solution is engineered and manufactured with precision, quality, and speed.

BSI Approved

Silflex is a BSI approved company and holds the ISO 9001:2015 certificate of quality assurance. Silflex is proud to manufacture products that are made to meet or exceed SAE J20 International Automotive Standards.

Our advanced in-house manufacturing methods enable the creation of fully custom silicone hose designs, including complex one-piece assemblies that minimise joint failure and leak risk, and improve overall flow performance. Our engineering team can integrate inserts, branches, and specialist features directly into the hose structure, ensuring a precise, durable solution tailored to each application.

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