Hose Rings

Hose rings are essential sealing elements that are usually made from an extruded hose. Their characteristic feature is a round, circular cross-section, created by cutting hose pieces or hose by the metre to length. These rings are mainly used for sealing and fixing in various industrial applications and also act as buffers in statically and dynamically loaded components.

Manufacturing methods

1. Extrusion in the extruder / vulcanisation in the autoclave: The most widely used method for producing hose rings is extrusion. The unvulcanised rubber compound is fed into the extruder in strips and conveyed forwards through the die by a screw, producing a circular hose with the required diameters and consistent tolerances without significant eccentricity. This hose is then fully vulcanised in a large steam autoclave. In the final step, the finished hose is cut to the required length to produce the desired hose rings.

1.1 As a moulded hose with tighter tolerances: Here, hose pieces are moulded on the principle of a moulded article, allowing tighter tolerances than extrusion; subsequent grinding of the outer diameter is no longer necessary.

2. Cutting and further processing: After extrusion and subsequent vulcanisation in the steam autoclave, or after moulded hose production, the rubber hoses can be cut and processed in various ways.

Hose rings: The extruded or moulded hoses are cut to the required cut thicknesses on various cutting machines, partly with circular knives and partly with fixed knives.

Ground hose rings: The extruded hoses are pulled onto a mandrel and the outer diameter is ground over its full surface to a tighter tolerance. This allows a more precise fit, e.g. in cable glands, to ensure optimum strain relief for the cable passed through.

Cut-in rings: Once the extruded or moulded hose has been cut into the required hose sections by circular knife or chop cut, we can provide these rings with additional diameters. These can then easily be removed by hand or with a knife. The advantage is that only one ring with a specific inner and outer diameter has to be produced, which is then given further diameters in a more cost-effective process. This allows a single ring to be used in several ways. Also known as a universal sealing ring or, as it used to be called, an onion ring.

Colour code stripe: We can also mark the finished hose rings, sealing rings, moulded sealing rings and cut-in rings with a colour code stripe on the outer diameter. This allows, for example, quick and reliable identification of the different materials, as a particular size is often needed in different grades.

3. Material selection and design: Hose rings are made from a wide range of elastomers, each offering specific properties such as abrasion resistance, ageing resistance, chemical resistance and different temperature ranges. Commonly used materials include NR, NBR, CR, EPDM, FPM/FKM (Viton®) and silicone. The choice of the right material depends on the requirements of the application.

Precise manufacturing of hose rings, whether by extrusion or moulding, ensures that they meet the specific requirements of different industries. The versatility and flexibility of these sealing elements make them an essential component in areas such as the electrical industry, connection technology, mechanical and plant engineering, the sanitary industry and the automotive sector.

At SIEGEL Dichtungen we not only offer standard hose rings and moulded rings, but are also on hand with tailor-made solutions for your end product and technical advice. Please contact us for further information on our products and services.

Hose rings are versatile sealing elements used in a wide range of industries and technical applications. As your partner for hose rings, we offer tailor-made solutions that meet the requirements of different industries.

Electrical industry: In the electrical industry, hose rings are used to insulate and seal electrical components, control cabinets, connectors and cable glands. They not only ensure a reliable seal but also provide strain relief and kink protection for the cable passed through, and offer protection against moisture and environmental influences, also as EMC seals on request.

Mechanical and plant engineering: In mechanical and plant engineering, hose rings are frequently used in various sealing systems, connections and electrical assemblies. They provide reliable protection against dust, dirt and various media, increasing the operational reliability and service life of machines. Hose rings can also be used as buffers in this field.

Fastening and connection technology: In fastening and connection technology, hose rings play a key role in securely fixing and sealing components. They are used, for example, in pipelines, plug connections, wall mountings, housings and closure mechanisms to ensure a reliable seal between two components.

Building services: In building services, hose rings are used to seal and insulate sanitary installations, heating and air-conditioning systems and other installation components. They help to minimise energy losses and guarantee a reliable seal.

Sanitary industry: In the sanitary industry, hose rings are essential for sealing pipe connections, fittings and a wide range of sanitary installations. They ensure a reliable seal and support hygiene standards in sanitary systems. In this field we can also supply to various standards, e.g. KTW, DVGW, W270, WRAS and others.

Our hose rings meet current quality standards and, depending on your request and application, can also be designed to meet various standards and approvals. We offer suitable solutions and materials that comply with the specific requirements and regulations of your industry.

KTW-BWGL and DVGW: On request, the elastomer grades we use for hose rings are tested and approved to KTW-BWGL and DVGW, ensuring their suitability for drinking water applications.

EN16421 (W270): The standard governing the influence of materials on water intended for human consumption with regard to the growth of microorganisms. For use in the food and beverage industry, our hose rings comply with EN16421 (W270) on request, ensuring high hygiene standards and material compatibility.

FDA, BfR and EC 1935/2004: For applications involving direct contact with food, our hose rings are also certified to FDA, BfR and EC 1935/2004 and meet the strict legal requirements for food contact materials.

UL94 V: On request and depending on the application, our hose rings are self-extinguishing and flame-retardant to UL94 V, ensuring their safety and usability in environments with a fire risk.

These certifications and standards underline our commitment to the quality and safety of our products. Our hose rings meet the necessary requirements and are optimally designed for your specific needs. Contact us for further information on our approvals and standards for your individual applications.

At SIEGEL Dichtungen we offer tailor-made hose ring solutions to meet our customers' individual requirements. Our range includes a wide variety of options to ensure that our hose rings match your specific needs in every respect.

Colour code stripes for easier identification: On request, we can provide our hose rings with colour code stripes on the outer diameter. This marking makes it easier to distinguish between the different grades and ensures the correct use in your plant.

Small to large series: We can manufacture hose rings in both small and large series. Whether you need a small batch for special applications or large quantities for series production, we support you with our expertise and flexibility.

To PG, metric or your specifications: Our hose rings can be manufactured to common standards such as PG or metric. We can also work to your individual specifications to ensure that the hose rings exactly match your technical requirements.

Our aim is to offer you high-quality hose rings that meet all your requirements. Please contact us for further information or to discuss your specific requirements. We look forward to supporting you with our expertise.

Ordering your hose rings is simple and straightforward, so that we can offer you the best possible service. Here is how to order your custom hose rings from us:

Contact us: Get in touch with our experienced team by phone or email. Our experts will be happy to discuss your requirements and help you choose the right hose rings.

Advice and quotation: Based on your specific requirements and applications, we offer comprehensive advice. We prepare an individual quotation tailored to your needs, including pricing and delivery terms.

Order: Once you are happy with our quotation, you can place your order. We ensure that your hose rings are delivered according to the agreed specifications and quantities.

After-sales support: We remain at your disposal after delivery. We offer first-class customer service to make sure your expectations are met and you are fully satisfied with our products.

Take the opportunity to order your hose rings from us and benefit from our many years of experience and our commitment to quality and customer satisfaction. Contact us today to find out more and place your order.