Tapered Rubber Bellows , also known as Rubber Expansion Joint, Molded Rubber Bellows Tubing, Rubber Corrugated Pipe, Rubber Syphone Bellows, Rubber Bellow Boots, Rubber Convoluted Boots, is an essential part of many different industrial systems. Tapered Rubber Bellows are a new struction designed to protect against dust, water, oil, grease, acids, bleaches, spatter and other environment elements.

Rubber bellows are made from a variety of materials, selected according to your design parameters and use scenarios. There are usually several rubber materials to choose from, such as natural rubber (NR), EPDM, CR, or Si, and they are available in a variety of shapes and sizes to meet your special needs.

Product Specifications

Product Pictures

Rubber Bellows Main Struction and Shape

Expansion joints rubber bellows are universal seals for a wide range of industrial applications, including steering components for HVAC systems, pump and cylinder expansion joints.The expansion joints can be customized to suit your needs. Molded silicone bellows can also have different wall thickness according to the design requirements.

Custom Rubber bellows are also widely used in the field of medical devices. Medical grade silicone is usually used in materials as the support and connection of medical devices' hoses.Examples include respirators, respirators, anesthesia machines, and implantable drug pumps.

Rubber corrugated hose advantage

1. Excellent followability

As bellows seal itself is fully closed structure, eliminated the ordinary spring in structure and seal will be some movement in the ring and the shaft sleeve (or axis) dynamic sealing ring, make the bellows fully utilized to form their own play rate than pressure (and ordinary seal due to the existence of the sealing ring, the ring sleeve when the relative displacement takes part of balance.

The friction force between the seal ring and the shaft sleeve (or shaft) makes the balance force limited by the machining dimension precision and heat treatment of the seal ring, showing its superior tracking.In the process of use, common mechanical seals often cause pump body pumping phenomenon due to various reasons such as device fluctuation or operation process.

At this time, the existence of the moving ring seal ring makes the end face open and cannot be reset in a timely manner, resulting in the leakage of mechanical seals, and the bellow machine seal in the structure to eliminate the seal failure way.It is almost not affected by pump body pumping, showing its good compensation and performance in easy pumping light hydrocarbon pump, pressure relief tower bottom pump, etc.

This feature is an important reason for the application of bellows seal.

2. High temperature resistance

Because bellows seal cancelled the common spring the influence of the sealing ring of the sealing ring, suitable medium and temperature greatly expanded, usually ordinary mechanical seal ring seal materials in organic compounds, such as teflon rubber these organic compounds in some medium, in conjunction with the medium body produces chemical reaction, under the condition of low temperature and high temperature, will change its physical properties, make the seal failure, produce sclerosis and bellows seal is not restricted by the above factors, generally applicable to benzene, ketone, alkenes, alkanes and general many media such as oil, acid, alkali salt, temperature range can also be used by - 250-450 degrees

3. Balance

Compared with the ordinary machine seal, bellows seal does not need to be processed on the shaft sleeve step, itself can establish the balance diameter, in the balance state (generally for the partial balance) when the bellows inside and outside diameter dimension parameters can be adjusted, to reach the ideal state, the bellows machine seal in the application are generally balanced.

4. Less leakage

Ring and static ring sealing points are metal (non-metallic) gasket sealing and connecting bolt fastening way, it is difficult to find leak, corrugated pipe sealing leakage in essence only friction pair the dynamic seal points, there is no doubt that the chance of greatly reduced, and general mechanical seal leakage of channel mainly has three: ring sealing ring and static ring sealing ring and friction pair of end face.In this leakage channel, the seal leakage caused by the failure of the dynamic and static ring auxiliary sealing ring accounts for 40% of the total leakage.

How to customize conical rubber bellows?

1. Provide samples or 2D/3D design drawings and tell us your special requirements.

2. Material selection: solid silicone, liquid silicone rubber or other materials.

3. Grade requirements: food grade, pharmaceutical grade or industrial grade.

4. Hardness requirement :10-80 Shore A(durometer).

5. Working environment: Working temperature, chemical environment, etc.

6. Quantity and packing requirements.

We are a professional manufacturer of silicone rubber products, with precision mold design and manufacturing technology, with more than 15 years of experience in the production of silicone rubber, you can customize a variety of silicone rubber bellows and silicone rubber sealing rings, gaskets, silicone rubber keyboard keys and other silicone products, welcome to contact us at any time.