Is the Tube end, carbon steel, RST type suitable for low-pressure rubber and textile-reinforced plastic hoses with an external steel braid?

Yes. The Tube end, carbon steel, RST type is suitable for low-pressure rubber and textile-reinforced plastic hoses that have an external steel braid. It is specifically intended for low-pressure rubber, non-reinforced, and textile-reinforced plastic hoses with an external steel braid, and is commonly used in flexible conduits for sanitary fittings, fuel systems, and air systems. Made of galvanized carbon steel, it provides appropriate corrosion resistance and mechanical strength for typical low-pressure applications. Ensure hose size and pressure ratings match the fitting specifications and that installation follows manufacturer guidelines.

Can Tube end, carbon steel, RST type be used in sanitary and fuel flexible conduit applications with external steel-braided hoses?

Yes. Tube end, carbon steel, RST type can be used in sanitary and fuel flexible conduit applications with external steel-braided hoses. It is designed for low-pressure rubber, non-reinforced, and textile-reinforced plastic hoses with an external steel braid and is commonly used in flexible conduits for sanitary fittings, fuel systems, and air systems. Material (carbon steel, galvanized) suits typical low-pressure service; ensure compatibility with media, pressure ratings, temperature range, and any sanitary or fuel-system standards applicable to your installation before use.

Does Tube end, carbon steel, RST type require specific hose inner diameters or wall thicknesses for proper sealing?

Tube end, carbon steel, RST type does require appropriate hose inner diameter and wall thickness to ensure proper sealing and reliable performance. Key requirements: - Inner diameter fit: The hose inner diameter must match the RST tube end outer diameter closely so the hose can slide fully onto the tube end for an interference or tight fit. Too large an inner diameter will prevent adequate compression and sealing; too small may damage the hose or prevent assembly. - Wall thickness / hose construction: Because the RST type is intended for low-pressure rubber, non-reinforced, and textile-reinforced plastic hoses with an external steel braid, the hose wall must be thick enough and have sufficient shore hardness to resist extrusion or deformation under clamping and operating pressure. Very thin-walled hoses may not seal reliably or may pull back from the tube end. - Braid and reinforcement compatibility: The external steel braid provides mechanical restraint, but the hose core and wall must still compress properly against the tube end. Textile-reinforced or non-reinforced hoses specified by the hose maker for use with barbed or plain tube fittings are appropriate. - No nut / low-pressure design: Because RST fittings lack a nut, they rely primarily on hose tightness, possible adhesive/sealant, and the braid for retention. Follow hose manufacturer recommendations for minimum wall thickness and inner diameter tolerance for push-on or crimpless assemblies. - Assembly practice: Ensure full insertion depth, consider using a clamp or crimping method suited to the hose type and operating pressure, and verify with pressure testing. In practice, use hose and tube end manufacturer tables or datasheets to select hose ID and wall thickness compatible with Tube end, carbon steel, RST type. If such data are unavailable, consult the hose supplier or perform validation testing to confirm sealing and retention at the intended service pressure.

Tube fitting, carbon steel, type RST

All products, Low-pressure fittings and adapters/

Additional information

Material	CS – steel (cast iron)

Straight tube fitting type RST, without a nut, intended for low-pressure rubber and plastic hoses, unreinforced and with textile reinforcement, with an external steel braid. Commonly used in flexible lines for sanitary fittings, fuel and air installations, etc. Material: carbon steel, galvanized.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
EC-108504	Fitting tube RST 4 mm (hose 4.5 mm)	4	30	In stock	Enquiry
EC-108505	Fitting tube RST 5 mm (hose 5.5 mm)	5	30	In stock	Enquiry
EC-108506	Fitting tube RST 6 mm (hose 5.5 mm)	6	30	In stock	Enquiry
EC-108508	Fitting tube RST 8 mm (hose 7.5 mm)	8	30	In stock	Enquiry
EC-108510	Fitting tube RST 10 mm (hose 9 mm)	10	30	In stock	Enquiry
EC-108512	Fitting tube RST 12 mm (hose 11.5 mm)	12	30	In stock	Enquiry
EC-108515	Fitting tube RST 15 mm (hose 14.5 mm)	14	30	In stock	Enquiry
EC-108518	Fitting tube RST 18 mm (hose 17 mm)	18	30	In stock	Enquiry

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Straight tube fitting type RST, without a nut, intended for low-pressure rubber and plastic hoses, unreinforced and with textile reinforcement, with an external steel braid. Commonly used in flexible lines for sanitary fittings, fuel and air installations, etc. Material: carbon steel, galvanized.