Sealing sleeves silicone

Silicone funnel top, filling line, pharmaceutical sector

Bellows with VA flanges, decoupling of weighing systems

Compensator, compressible, silicone, FDA-compliant

Cuffs with expansion gusset

Cuffs with pleat, FDA-compliant rubber compound

Transition sleeve, flexible seal, shaft end guide

Vase compensator with pleat

Cuff made of silicone, transparent, FDA-compliant

Sealing cuff Silicone, transparent, FDA-compliant, cold vulcanised

Silicone components for low-dust filling and for decoupling scales when handling dusty bulk materials

High-quality sleeves can be used in many ways in our everyday technical work. No matter for which media, we offer you the right solution with the right component for every application. And if there is not yet a component for your specific application, we will develop one for you.

Reproducible product quality and clean workplaces are very important in many industrial filling and weighing processes. Especially when handling dusty bulk materials, individual components play a decisive role.

Many so-called compensators do not fit precisely, are too stiff or even leak. This then leads to safety-relevant risks, especially in the case of substances that are hazardous to health, to which attention should definitely be paid. Our sleeves and compensators made of silicone, on the other hand, ensure dust-tight filling in flexible pipe systems.

Furthermore, it is important for the weighing process that the individual components decouple vibrations and connect different tube diameters in a dust-tight manner. We supply a variety of different silicone components for this purpose.

Our team, with expertise and experience, will turn your idea into customised products. Contact us!

One of the many flexible connections offered by AL Gummi und Kunststofftechnik is the silicone cradle collar, cradle bellows, vase compensator or step bellows. These components are vulcanised into shape and are therefore completely seamless, which increases both the flexibility and the strength that the connection can withstand.

Our silicone sleeves meet the highest requirements. They are basically FDA-certified, and may therefore also be used in accordance with the strict safety requirements in the food industry, for example.

Due to their extreme flexibility, our weighing collars generate only a very low reaction force, so that they do not influence the weighing. They are very resistant to chemicals, high temperatures and ageing.

In addition, we offer a wide range of silicone moulded parts – fast, high-quality and inexpensive. From design consulting and toolmaking to prototyping, sampling and process qualification, we are happy to put our many years of experience at your disposal. Our speciality is the production of small batches, quickly and precisely according to your design drawing.

Weighing cuffsand weighing bellows

Another flexible connection is the cradle cuff. These collars are manufactured using compression moulding and are therefore completely seamless, which increases flexibility and also resilience. The cradle collar is suitable for a variety of uses, such as the flexible connection of inlet and outlet lines to containers of load cells, mixers, dosing devices or similar devices.

Our weighing collars are made of silicone as standard and are basically FDA-compliant, so they can also be used in the food industry, medical technology or pharmaceutical industry.

Due to their extreme flexibility, weighing collars generate only a very low reaction force, so that they do not influence the weighing. They are very resistant to chemicals, high temperatures and ageing.

Other rubber qualities (wear-resistant, antistatic, oil-resistant, heat-resistant, chemically resistant) are possible at any time and on request.

Stepped bellowsmade of silicone

The silicone seamless stepped bellows allows flexible connection of vessels to load cells, mixers or feeders, with inlets and outlets or other forms of air or powder transport with two different pipe diameters.
When connecting two different pipe diameters, it may be desirable to install a stepped bellows or a conical collar.

Our step bellows are made of silicone as standard and are basically FDA-compliant, so they can also be used in the food industry, medical technology or pharmaceutical industry.

cuff-cradle-transition-cuff-with-offset_light-grey

Scale compensatorfor scale decoupling

The scale or vase compensator is designed for the safe decoupling of filling scales. It prevents deposits in the compensator due to its special shape with seamless and smooth inner walls.

Force-fit connections of components often lead to falsification of weighing results. The special design of the vase compensator compensates for frictional connections and guarantees an unadulterated result.

Often, compensators are not suitable for use in the pharmaceutical sector due to their shape. Product deposits in dead spaces contradict the high demands of the pharmaceutical and medical technology industry. This is because the product residue in the dead spaces often cannot be completely removed even when the component is thoroughly cleaned. In such cases, so-called cross-contamination of batches often occurs.

The vase compensator, on the other hand, consists of a seamlessly moulded individual part and is the perfect application due to its special shape. Its special geometry prevents product deposits and is easy to clean, so that contamination of your products is excluded.

Design featuresWiegemanschette

Due to their high flexibility, cradle sleeves have almost no constraining forces, so they do not affect weighing.

Among other things, they are extremely resistant to chemicals, temperature and ageing.

In addition, the cradle sleeves have a vibration- and sound-damping effect.

Possible applications

ideal as a transition between rigid and flexible pipe
For transitions in filling and dosing systems
Discharge hoses
Vibration transitions
Decoupling of weighing systems

Design featuresSilicone cuffs

Structure of silicone sleeves

Silicone sleeves or hose sections are special sealing solutions that are often used when approval is required at high temperatures or in the food industry.

Silicone sleeves or hose sections are hot-vulcanised in our production. This gives them a smooth inner surface and a slightly structured outer finish. The result is a homogeneous connection with constant material thickness at all times.

Connecting seams of cuffs are generally vulcanised in our production. This produces homogeneous joints with a constant material thickness.
With this manufacturing process, we are able to produce a wide range of dimensions according to individual customer requirements. We use CAD to process the geometries. This means that fewer tool moulds are needed and the production time is significantly reduced.

A particularly cost-effective production option is the so-called cold vulcanisation.
This type of customised production of silicone sleeves involves a multi-stage manufacturing process.
First, the roll material is cut to your specified dimensions. In the next step, the finished cut is cold-vulcanised by hand to the appropriate diameter by one of our employees. In order to even out any final unevenness or protrusions, the silicone sleeve is reground after the seam has been vulcanised.

Function

A quick and inexpensive way to connect pipes or moving machine parts to each other is to use a sleeve that is fastened on each side with hose clamps.

This type of fastening is usually easy to install. The hose clamps can be adjusted to any size. The connection can be used for round or oval pipes of any diameter, circumference, height and length.

This makes the collar a perfect universal stock item that can be used in many different places in your company or during a commissioning of a new system.

The advantages and material properties of silicone at a glance

Due to its high temperature resistance, with a temperature range between -60° C and +210°C, as well as good mechanical properties, silicone is an excellent material for sleeves and hose sections.

The material is also relevant in medical technology, the food and pharmaceutical industries, as it is considered physiologically harmless and thus has various conformities, such as EC 1935/2004 or FDA (21 CFR 177-2600).

Silicone is:

biocompatible and physiologically safe
temperature and heat resistant
ozone and UV resistant
food safe
FDA-compliant
approved for drinking water (according to WRAS)

AL-Gummi Branchenlösungen Getränke- und Lebensmittelindustrie - Fließband mit orangenen Flaschen

Beverage and food industry

Scale decoupling in filling plants, confectionery, breweries, cheese factories, bakeries, tea filling, spice mixtures, pet food, dairy products, powdered milk, infant food, baby food, flours, food starch, sugar, salt, pepper, malt

AL-Gummi Branchenlösungen Anlagen- und Maschinenbau

Plant and mechanical engineering

Filling systems, silos and silo trucks, container seals, drum presses, refrigerated containers, storage containers, material locks, docking of metering units for filling bulk containers

AL-Gummi Branchenlösungen Dosier-, Schüttgut- und Recyclingindustrie - Körner eines Rohstoffes in Händen

Dosing, bulk solids and recycling industry

Flexible connections between rigid pipes to metering devices, mixers, dosing units or vessels on load cells, this requires a dust-free and weight-neutral decoupling.

Powder and granulate, mixing and sieving systems, dryers, flaps, valves, sieve changing systems, decoupling between dosing unit and weigher