High Performance Rubber Expansion Joints

We supply a range of products, from standard rubber expansion joints to expansion joints for special applications, to meet the displacement compensation and vibration reduction needs of different piping systems.

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5 Reasons to Work With Us

Reliable Rubber Compounds
Flexible & Easy Installation
Stable Production Capacity
100% Quality Inspection
OEM/ODM & Printed Logo Services

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Rubber Expansion Joint Manufacturer

Industrial pipeline vibration, equipment noise, and thermal expansion and contraction displacement can all affect the operation of equipment systems. Jiuyi’s Rubber Expansion Joint absorbs vibration, reduces noise, and compensates for certain axial and lateral displacements by adjusting the flexible rubber structure. It is suitable for connecting pipes, pumps, fans, and industrial equipment, and customized solutions can be provided according to actual working conditions.

Rubber Expansion Joint Types

Customized rubber compensators are available in various sizes, flanges, rubber materials, and structures to suit different pipeline conditions.

Single Sphere Rubber Expansion Joint

It absorbs pipeline vibration and axial displacement, for water, air and general industrial media.

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Double Sphere Rubber Expansion Joint

Double-sphere structure provides better displacement compensation suit for complex pipelines.

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EPDM Expansion Joint

EPDM rubber has good water & aging resistance, for water supply and drainage systems.

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NBR Expansion Joint

NBR material has oil resistance and is suitable for pipelines containing oil and industrial media.

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Why Use Rubber Expansion Joints in Your Piping System?

Flexible rubber compensators help control vibration, displacement, noise, and installation stress around pumps, valves, HVAC equipment, and industrial pipelines.

Reduce Piping Vibration

Absorbs vibration from pumps, compressors, motors, and other rotating equipment.

Control Thermal Expansion

Handles pipeline movement caused by heating and cooling cycles during operation.

Reduce Mechanical Stress

Flexible construction helps limit stress transferred to pipes and connected equipment.

Minimize Operating Noise

Rubber construction helps reduce vibration-related noise in piping and mechanical systems.

Built for Different Media

Choose rubber compounds according to water, air, oil, chemicals, or other service media.

Easy Flange Installation

Standard flange configurations make replacement and installation more convenient for maintenance teams.

Flexible Size Selection

Multiple nominal pipe sizes and face-to-face dimensions support different piping layouts.

Made for Industrial Systems

Suitable for water treatment, HVAC, pumps, marine systems, and general industrial piping.

Vibration Reduction & Noise Reduction Performance

Jiuyi’s rubber expansion joints offer excellent flexibility, high damping, and superior vibration isolation, reducing mechanical impact and rigid coupling between equipment and pipelines. Typically, rubber expansion joints should be installed near vibration sources. This helps improve noise and vibration reduction in your piping system.

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Good Displacement Compensation Effect

Rubber expansion joints utilize the elastic deformation of rubber materials to convert pipeline displacement into tensile, compressive, shear, and bending deformations of the rubber body, thereby reducing the impact of displacement and vibration on the pipeline system. They can help pipeline systems absorb thermal expansion and contraction, and also help industrial pipeline equipment compensate for installation errors.

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Professional Rubber Expansion Joint Supplier

Jiuyi specializes in the production of rubber expansion joints and flexible pipe connections. We use high-quality rubber formulations and customize and install flanges for you. We have rigorous testing procedures and can provide suitable product solutions based on pipe diameter, pressure, medium, and installation conditions. Our products are widely used in pump rooms, water supply and drainage, HVAC, fire protection, chemical, and industrial piping systems.

Rubber Expansion Joint Solutions for Different Industries

We provide corresponding rubber expansion joint solutions for different application scenarios to help you reduce pipeline vibration, absorb thermal displacement, and reduce mechanical stress generated during equipment operation.

Rubber Expansion Joints for Power Plant

In the power plant and energy system, the vibration and thermal displacement of the pumps and fans will be more, the cooling water cools and the circulating the water pipeline also be vibrated. Rubber expansion joints may be used at the outlets of pumps, in the circulating water pipes and cooling systems, or where else any need to absorb vibration or compensate for movement.

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Rubber Expansion Joints for Chemical & Petrochemical

Chemical & petrochemical pipelines has to account for media corrosivity, temperature extremes and vibration of equipment. For different media, the rubber elastomers like EPDM, NBR, Neoprene, FKM could be chosen according to the working condition in reality.

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Custom Rubber Expansion Joints

Custom rubber compensators sizes, materials, reinforcement layers, flange standards, and connection configurations available for project requirements.

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More Details About Rubber Expansion Joint

Signel Rubber Expansion Joint
Multi-Sphere Rubber Expansion Joint Data Sheet

Table 1: Single Rubber Expansion Joint
Nominal Diameter (DN)		Flange Length (mm)	Axial Displacement (mm)		Radial Displacement (mm)	Angular Displacement
mm	inch	Flange Length (mm)	Elongation	Compression	Radial Displacement (mm)	(a1+ d2)
32	1.25″	90	6	10	10	25
40	1.5″	95	6	10	10	25
50	2″	105	6	10	10	25
65	1.5″	115	8	15	12	25
80	3″	135	8	20	12	25
100	4″	150	12	20	16	15
125	5″	165	12	20	16	15
150	6″	180	12	20	16	15
200	8″	210	30	30	16	15
250	10″	230	30	30	25	8
300	12″	245	30	30	25	8
350	14″	255	30	30	25	8
400	16″	255	30	30	25	8
450	18″	255	30	30	25	8
500	20″	255	30	30	25	8
600	24″	260	40	40	25	8
700	28″	260	40	40	30	3
750	30″	260	40	40	30	3
800	32″	260	40	40	30	3
900	36″	260	40	40	30	3
1000	40″	260	40	40	30	3
1100	44″	300	40	40	30	3
1200	48″	300	50	50	30	3
1300	52″	300	50	50	35	2
1400	56″	350	50	50	35	2
1500	60″	350	50	50	35	2
1600	64″	350	50	50	35	2
1800	72″	400	50	50	35	2
2000	80″	400	60	60	35	2
2200	88″	400	60	60	35	2
2400	96″	450	60	60	35	2
2600	104″	450	60	60	35	2
2800	112″	450	60	60	35	2
3000	120″	500	60	60	35	2
3200	128″	500	70	70	35	2
3400	136″	500	70	70	35	2
3600	144″	500	70	70	35	2
3800	152″	550	70	70	35	2
4000	160″	550	70	70	35	2
4200	168″	550	70	70	35	2
4400	176″	600	70	70	40	1
4600	184″	600	70	70	40	1
4800	192″	650	70	70	40	1
5000	200″	650	70	70	40	1
Note:Above sizes are according to the Chinese Standard. Other sizes can be changed as required.

Table 2: Multi-Sphere Rubber Expansion Joint Data Sheet
Diameter		Length of Double-Sphere (mm)	Length of 3-Sphere (mm)	Length of 4-Sphere (mm)	Axial Displacement (mm)			Radial Displacement (mm)			Angular Displacement (mm)
mm	inch	Length of Double-Sphere (mm)	Length of 3-Sphere (mm)	Length of 4-Sphere (mm)	Double-Sphere	3-Sphere	4-Sphere	Double-Sphere	3-Sphere	4-Sphere	Double-Sphere	3-Sphere		4-Sphere
32	1.25″	165	250	300	±30	±50	±70	45	65	75	45		47	50
40	1.5″	165	250	300	±40	±60	±80	45	65	75	45		47	50
50	2″	165	250	300	±40	±60	±80	45	65	75	45		47	50
65	1.5″	175	300	350	±40	±60	±80	45	65	75	45		47	50
80	3″	175	300	350	±40	±60	±80	45	65	75	45		47	50
100	4″	225	350	400	±50	±70	±90	55	70	80	30		32	35
125	5″	225	350	400	±50	±70	±90	55	70	80	30		32	35
150	6″	225	350	400	±50	±70	±90	55	70	s0	30		32	35
200	8″	325	400	450	±50	±70	±90	55	70	80	15		20	30
250	10″	325	400	450	±50	±70	±90	55	70	80	15		20	30
300	12″	325	450	500	±60	±80	±100	65	75	85	15		15	15
350	14″	325	450	500	±60	±80	±100	65	75	85	15		15	15
400	16″	400	450	500	±60	±80	±100	65	75	85	15		15	15
450	18″	400	550	600	±70	±80	±100	65	75	85	10		10	12
500	20″	400	550	600	±70	±85	±120	65	75	85	10		10	12
600	24″	400	550	600	±70	±85	±120	65	75	85	10		10	12
700	28″	400	550	600	±75	±90	±120	70	80	90	10		10	12
800	32″	450	550	600	±75	±90	±120	70	80	90	8		10	12
900	36″	450	550	600	±75	±90	±120	70	80	90	8		10	12
1000	40″	450	550	600	±75	±90	±120	70	80	90	8		10	12
1200	48″	500	550	600	±80	±100	±140	70	80	90	6		10	12
1400	56″	500	600	650	±80	±100	±140	75	85	100	6		8	12
1600	64″	500	600	650	±80	±100	±140	75	85	100	6		8	10
1800	72″	500	600	650	±80	±100	±140	75	85	100	6		8	10
2000	80″	550	600	650	±85	±120	±160	75	85	100	4		6	8
2200	88″	550	650	700	±85	±120	±160	70	80	100	4		6	8
2400	96″	550	650	700	±85	±120	±160	70	80	100	4		6	8
2600	104″	550	650	700	±85	±120	±160	70	80	100	4		6	8
2800	112″	550	650	700	±85	±120	±160	70	80	100	4		6	8
3000	120″	550	650	700	±85	±120	±160	70	80	100	4		6	8

Real Customer Reviews of Our Rubber Compensators

These rubber bellows compensators were mounted between the pump and the pipeline. The apparatus used to vibrate significantly when running; subsequent to the substitution, field comment were entirely positive particularly with diminution of vibration on line ends while start up and shutdown of pump. This whole the purchasing was easy to follow, and the techs were able to suggest appropriate models for our operating conditions.
Kakan
CEO, Turkey
Our project consisted of non-standard sizes, we had to order rubber expansion joints made to measure, which included the dimensions of the flanges, as well as the overall length. We had submitted drawings and parameters at the beginning, and the key dimensions were reconfirmed by the supplier before production. The finished product is very close to what we had for installation space, this is very critical for the project site.
Somchai
Engineer, Thailand

What displacements can a rubber expansion joint compensates?

Rubber expansion joints are designed to accommodate axial, lateral and angular movements up to a certain limit. The compensation amount is related to the design type, pipe diameter, length, rubber material, and working pressure. The selection should be made on the basis of calculation according to the actual working condition.

What is the difference between single sphere and double sphere rubber expansion joints?

Single sphere joints are generally smaller in size and are more suitable for smaller space or applications where relatively low displacement can be expected. Double sphere joints normally have better flexibility and displacement absorption capability, this makes them the best option for piping systems which are involved with large vibrations or in case more compensation is required.

Which types of rubber is used in the expansion joints of rubber?

The usual materials are EPDM, NBR, Neoprene and natural rubber. EPDM is best suited for water and steam application while NBR is more oil compatible. The specific material is dependent upon the medium, temperature and pressure.

To what standards should the flanges for rubber expansion joints be manufactured?

The most common flange standards for flanges are as followings: ANSI, DIN, JIS, BS, EN. Please confirm the outside diameter of the flange, the number of the bolt and the distance between each bolt, the type of sealing surface and the pressure level when you buy. DN does not allow to know if it is compatible or not.