Shanghai Songjiang Jingning Shock Absorber Co.,Ltd.
                                                                                                           
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22 Years
Since 2004
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Floating Flange Rubber Expansion Loop: Easy-Install Flexible Pipe Coupler for Rapid Maintenance & Alignment

Price Negotiable
Price: US$11.51~51.51/pc
MOQ: 1
Delivery Time: 5--15 working days
Brand: JINGNING
Product Description

Floating Flange Rubber Expansion Loop: Easy-Install Flexible Pipe Coupler for Rapid Maintenance & Alignment


Product Description

In complex retrofits and aging pipeline corridors, traditional fixed-flange connectors often turn installation into a logistical nightmare, forcing field crews to wrestle with misaligned bolt holes. Maximize your field efficiency with this premium floating flange rubber expansion joint, strategically engineered with loose, split-type backing flanges that rotate a full 360 degrees completely independent of the rubber body. This smart engineering architecture eliminates the risky practice of forcing, prying, or twisting the flexible elastomeric core to match a rigid pipe header, ensuring an immediate drop-in fit even in highly restricted or poorly aligned piping footprints.

By decoupling the metal flanges from the rubber matrix, this design prevents catastrophic pre-installation torquing stress—a leading cause of premature joint failure where the internal reinforcement cords are sheared during the initial bolt-tightening process. When technicians can secure the hardware without introducing structural twist, the joint retains 100% of its rated pressure and movement capacity. It serves as the definitive high-speed maintenance component for plant turnarounds, emergency swap-outs, and utility upgrades where structural safety must be achieved without wasting valuable operational downtime.


Performance characteristics

  • 360° Non-Binding Flange Rotation : Equipped with fully loose backing flanges that spin freely around the rubber sealing collar. This allows field technicians to line up bolt patterns seamlessly at any angle, completely eliminating field alignment bottlenecks.

  • Zero Pre-Installation Torsional Stress : Guarantees that the internal high-tenacity reinforcement fabric remains entirely free of twisting or shearing forces during bolt torqueing, preserving the full structural integrity and bursting pressure rating of the bellows.

  • Rapid Asset Swap-Out Capability : Engineered specifically as a high-efficiency maintenance joint for aging or shifting pipelines. It drastically shortens pipeline downtime by accelerating alignment verification, minimizing labor costs during critical plant turnarounds.


Product Specification

Size Length Allowable Movements in Operation
mm inch mm Axial Compression mm Axial Extension
mm

Transverse Movement

mm

Angular Deflection mm
25 1 130/152 20 12 14 15°
32 1 1/4 95/130/152 20 12 14 15°
40 1 1/2 95/130/152 20 12 14 15°
50 2 105/130/152 20 12 14 15°
65 2 1/2 115/130/152 20 12 14 15°
80 3 130/135/152 20 12 14 15°
100 4 130/152 20 12 14 15°
125 5 130/152/165 20 12 14 15°
150 6 130/152/185 20 12 14 15°
200 8 130/152/210 20 12 14 15°
250 10 130/203/230 20 12 14 15°
300 12 130/203/245 25 16 22 15°
350 14 200/255 25 16 22 15°
400 16 200/255 25 16 22 15°
450 18 200/255 25 16 22 15°
500 20 200/255 25 16 22 15°
600 24 260 25 16 22 15°
700 28 260 25 16 22 15°
800 32 260 25 16 22 15°
900 36 260 25 16 22 15°
1000 40 260/300 25 16 24 15°
1100 44 300 25 16 24 15°
1200 48 300 25 16 24 15°

Note: If the medium is oil, acidic or alkaline substances, and there are special requirements for the working temperature, you can customize it by sending a letter or drawing. Please specify when ordering


Product Details

Production Flow


1.Raw material

Top level CR/EPDM/NBR

rubber raw materials,

No recycled rubber

2.Plasticating and mixing

Special Formulation for better Bending with Nylon,For Better Strength,Sealing

3.Workblanks wraping

Cooper plated steel wire reinforcement prevent pull off


4.Vulcanizing

Automatic vulcanization machine ensure vulcanization time and pressure

5.Inspecting
100% strict inspection is to be responsible for consumers

6. Packaging
Protective Packaging for No
Rust and Breakage


Application


Flexible Joint Flange are widely used in various fields, including construction, chemical industry, shipbuilding, tap water, gas, chemical pipelines, petroleum pipelines, food pipelines, air conditioning pipelines, and sewage treatment.


Our Services

1.24-hour online

2.Free samples provided

3.Support customization

4.Provide drawings

5.Multiple payment styles to choose from

6.Factory inspection (material, specifications, quantity, pressure, packaging)

7.Long warranty period

8.Suitable packaging for transportation


Our Customer


Certificate

FAQ

  • Q: Why do the metal flanges spin freely on the rubber body?

  • A: This is a floating flange design meant to simplify installation, allowing you to match any bolt pattern without twisting the elastomer.

  • Q: Do I need a heavy torque wrench to seal this joint?

  • A: No, standard cross-tightening with a regular wrench is enough, as the rubber flange face seals perfectly under normal torque.

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Shanghai Songjiang Jingning Shock Absorber Co.,Ltd.
Location Room 1002, Xinghua Building,Zhengzhou City, China
Contact Person Wu

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