Double sphere rubber joint with casting flange

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US $1-288 / Sets | 5 Set/Sets Double sphere rubber joint (Min. Order)
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Quick Details
Stainless Steel
Place of Origin:
Henan, China (Mainland)
Model Number:
Brand Name:
Head Code:
Product name:
Double sphere Rubber expansion joint with casting flange
Key words:
Double sphere rubber joint
Rubber Material:
Body Color:
pipe fittings
outstanding performance
cost effective
Set/Sets per Month Double sphere rubber joint
Packaging & Delivery
Packaging Details
depending on your requirements
Lead Time :
within 15 days after receiving your advanced 30% payment

Double sphere rubber joint with casting flange


Product Description


High quality double sphere rubber joint


Double sphere rubber joints are also called shock absorbers, pipe compensators, flexible connectors, etc. They are designed to absorb movements and stress on piping systems, compensate for pipe misalignment, reduce vibration and system noise, protect against start-up forces as well as system surges.


The double sphere design allows for greater movement and higher flexibility. Angular deflection can be up to 30°.


Double Sphere Rubber Joint

Product Overviews

Name: Double sphere rubber joint


Model: KST DN40~DN600

Technical Parameters

Pressure: 1.0~2.5Mpa

Medium: Air, water, seawater, oil, slurry, weak acid, alkali, etc.

Temperature: -20~+115℃

Application: Construction, water supply and drainage, and heavy industry, refrigeration, sanitation, plumbing, fire, electricity, etc.

Product Features

High resistance to corrosion.

Absorption of movements, vibrations and stresses.

For more information please visit our official website

Structure and Function of Double Sphere Rubber Joint

1 Rubber Body NR Natural Rubber, EPDM , Neoprene, IIR, NBR Buna-N, FKM/Viton, etc. Body
2 Cord Fabric Nylon Cord Fabric Body Carcass
3 Steel Ring Multi-Strand Coppering Steel Wire Reinforcement
4 Floating Flange According to Request Connection


Detailed Images


Detailed Images of Double Sphere Rubber Joint

Photos of Double Sphere Rubber Joint

Quality Comparison of Our Double Sphere Rubber Joint with Others

Project Cases - Application of Rubber Joint


As rubber has superior capability in resistance of acid, alkali, oil and electrolyte, rubber joint has become one of the alternatives of stainless steel and been successfully installed in tough demanding applications such as: Chemical, Petrochemical, Marine, Power Generation, Pulp and Paper, Steel Mills, Water and Wastewater Treatment, Building Construction, Heavy Industry, Freezing and Sanitary Plumbing.

Technical Parameters



Technical Conditions of Double Sphere Rubber Joint


Working pressure1.0 Mpa1.6 Mpa2.5 Mpa
Burst pressure2.0 Mpa3.0 Mpa4.5 Mpa
Vacuum53.3 Kpa86.7 Kpa100 Kpa
Applicable Temperature-20°C~+115°C (-30°C~+250°C under special conditions)
Applicable MediumAir, compressed air, water, sea water, oil, slurry, weak acid, alkali, etc.


Specification of Double Sphere Rubber Joint


Nominal Diameter
Axial Displacement
Horizontal Deflection
Angular Deflection
(a1+a2) °

1. For OEM orders with special requirement, rubber joints should be made according to customers' drawings.

Generally, flange standard is GB/T9115.1-2000, other GB, JB, HG, CB, ANSI, DIN, BSEN, NF, EN, JIS, ISO flanges are also available upon request. Material of rubber body can be NR natural rubber, EPDM, Neoprene, IIR butyl rubber, NBR Buna-N, FKM, etc.
2. When rubber joints size above DN200 are used for overhead water supply system, the pipes must be equipped with fixed supports or fixed brackets, otherwise control units should be installed on rubber joints.
3. Matching flanges of rubber joints should be valve flanges or GB/T9115.1(RF) flanges.

Production Flow


Production Flow of LEEBOO Brand Rubber Joint

Showroom, Workshops and Warehouse of Rubber Joint


Packaging & Shipping


Packaging of Rubber Joint


MOQ 1 pc, OEM orders acceptable.
Packing details Plastic/carton box, then seaworthy plywood case, or as per request.
Shipping method By express, by air or by sea
Shipping port Shanghai, Qingdao, Tianjin or as per request.
Shipping time 5-15 days after receiving 30% down payment, or according to order quantity.




Main Products of Gongyi Xinli Pipeline Equipment Co., Ltd.

Metal Bellows
Expansion Joint
Duckbill Check ValveDismantling JointValvePipe Accessories


Company Information


Why Us?

Pipe Expansion Joints Manufacturer since 1997


LEEBOO - China Famous Brand
Gongyi Xinli Pipeline Equipment Co., Ltd. is a professional manufacturer in the field of pipeline equipment for nealry 18 years and has 15 years sales experience.
Main products: rubber expansion joint, rubber duckbill check valve, dismantling joint, metal hose, metal bellows expansion joint, wall sleeves, valves, etc.


Our Services


1. Quality: ISO9001:2008 quality certified, quality and pressure test in workshop and by third party.

2. Equipment: 20+ molding machines, updated numeric control equipment for machining.

3. Staff: manfacturer of rubber joint since 1997, with well-trained and rich-experienced local workers.

4. Fast delivery: Lots of stocks for urgent order. 5-15 days after payment

5. Price: competitive factory price let clients benefit more from us.

6. Low MOQs / OEM orders acceptable.


Customer Visit


Our products have been exported to about 20 countries, such as Germany, Sweden, Russia, Italy, Portugal, Dubai, Kuwait, Saudi Arabia, Egypt, South Africa, India, Singapore,Thailand, Vietnam, the Philippines, Australia, Argentina and USA.

Customer visit from Italy, UAE, Australia, Algeria, India, etc.


Company Certifications


1. Company Business Licence
2. ISO 9001:2008
3. AAA Grades Trustworthness Enterprise of China
4. Green Environmental Protection Top Brand
5. First Level Supplier of China National Petroleum Corporation (2008)
6. China Quality Sincerity Enterprise Association Member
7. China Famous Brand (2009)



Q: What do you need to know for fast quotation?

A: It would be highly appreciated if we have the details of detailed drawing for OEM order, model, end connection type, flange standard and material, medium, pressure, temperature and other working conditions.

Q: Can you make the product as per client's requirement?
A: Yes, OEM service available. We can make according to your drawings or samples.

Q: How can you guarantee the quality or any warranty?
A: Any quality problems during use, all the products can be returned for domestic clients; we will send more free product in next batch for overseas clients or according to the requests.

Q: Do you accept small quantity order?
A: Yes, MOQ 1 pc for standard size, 5 pcs for customized size.

Q: What is your payment terms?
A: Usually T/T(30% as deposit, the rest 70% will be paid before delivery). L/C, Western Union, Paypal also acceptable.


Q: What about the lead time?
A: Usually 3-10 days for sample order. Lot production time according to order quantity.


Contact Information



Welcome to Contact Us for High Quality Double Sphere Rubber Joints!