Custom Formed Rubber Hose
RONTEIX offers various mandrel-formed rubber hoses at a competitive price, including S-shape, U-shape, elbow hose, multi-bend rubber hose and offset rubber hose.
Our factory can design and develop mandrels of different shapes according to vehicle models and drawings to fit the compact internal space of engines. RONTEIX utilizes a mandrel molding process to manufacture coolant hoses, heater hoses, air intake hoses, PVC hoses, turbocharger hoses, and fuel hoses.
If you are looking for a manufacturer who can customize rubber hoses with complex geometries and bend angles, RONTEIX will be your best choice. Contact us and send your drawings to us.
How to Form Rubber Hose?
- Machine stainless steel or aluminum alloy into smooth-surfaced mandrels based on 3D drawings.
- Incorporate vulcanizing agents, color masterbatches, and anti-aging agents into rubber raw materials (such as EPDM or NBR) to prepare the rubber compound.
- Extrude the compounded rubber to form the inner tube.
- Feed the rubber inner tube into a braiding or spiral-winding machine to apply a reinforcement layer of polyester yarn, aramid fiber, or steel wire.
- Pass the reinforced inner hose through an extruder again to apply the outer cover, providing corrosion and aging resistance.
- Cut the hose to the required length and slide it onto mandrels of various shapes. Mandrel release agent must be applied beforehand to prevent sticking.
- Place the hose assembly into a vulcanization oven at 140–180°C for a period of pressurized vulcanization.
- Immerse the vulcanized rubber hose in a cooling water tank.
- Inject high-pressure water between the mandrel and the inner wall of the rubber hose for easy demolding.
RONTEIX Hose Forming Mandrel
RONTEIX offers forming mandrels in a wide range of inner diameters and shapes. Most are made from stainless steel or aluminum and are designed for repeated use. These mandrels are ideal for manufacturing automotive coolant, turbo, heater, and radiator hoses.
Hoses produced using these forming mandrels feature precise shapes that permanently retain their intended curvature. Supported by the mandrel during production, inner wall remains smooth and resists collapse or suction-induced flattening under negative pressure. This process ensures a high degree of consistency in wall thickness, inner diameter, and shape across the entire production batch.
If you need to develop a new mold, please send RONTEIX 3D drawings or a physical sample. We can produce both the mold and the finished product within 5 to 7 days.
Forming Rubber Hose Applications
RONTEIX molded rubber hoses are primarily used in automotive and industrial applications. Capable of being manufactured in various curved configurations, such as S-shapes, J-shapes, and multi-bend forms, they are frequently utilized as automotive coolant and radiator hoses within the confined spaces of engine compartments.
- Coolant Hose
- Radiator Hose
- Heater Hose
- Air Intake Hose
- Turbocharger Hose
- PCV Hose
- Oil Hose
OEM Mandrel Formed Rubber Hose
To accommodate various vehicle models, engine configurations, and piping layouts, RONTEIX offers custom manufacturing of mandrel-formed rubber hoses. This production process allows for better dimensional control, making it ideal for mass production.
- Mold development based on 2D/3D drawings or physical samples.
- Customizable specifications, including bend angle, bend radius, inner diameter, wall thickness, reinforcement layers, and hardness.
- Highly consistent dimensions for easy installation.
- Rapid turnaround—mold creation, sample production, and testing completed within 5–7 days to shorten production cycles.
- Capability to manufacture hoses from various materials, including EPDM, NBR, silicone, and FKM.
- Custom branding options for logos on the hose body and packaging to promote your business.
