China Single Sphere Rubber Expansion Joint manufacturer
Shanghai Songjiang Jingning Shock Absorber Co.,Ltd.
JINGNING Specialized In Rubber Expansion Joints
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Anti-Corrosion PTFE Lining Rubber Expansion Loop: Industrial Strength Anti-Leak Flexible Coupler for Chemical Plants

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Shanghai Songjiang Jingning Shock Absorber Co.,Ltd.

City: zhengzhou

Province/State:shandong

Country/Region:china

Tel:86-150-93112546

Contact Person:
Mr.Wu
View Contact Details

Anti-Corrosion PTFE Lining Rubber Expansion Loop: Industrial Strength Anti-Leak Flexible Coupler for Chemical Plants

Minimum Order Quantity 1
Delivery Time 5--15 working days
Flange Standard PN10/16, Class150#, Class300#, JIS5K, JIS10K
Flange Material Carbon steel, SS304, SS316
Company Type Factory
Power Manual
Applicable Media Air, Water, Oil, Weak Acid and Alkali
Material Of Flange Q235, SS304, SS316, SS316L
Working Temperature -20℃~150℃
Packaging Details carton or wooden
Product Drawings Offer
Material EPDM,NBR,NR, CR, FKM
Main Frame Nylon Cord Fabric
Head Code Round
Model Number RLJS
Color Black
Businese Type Rubber expansion joints manufacturer
Axial Displacement 6-18 mm
Payment Terms Western Union,T/T,L/C,D/A,D/P,MoneyGram
Product name Rubber Expansion Joint Standard High Pressure Resistant In Piping Customized
Size DN50
Warranty 12 months
Application Pipeline systems
Price US$11.16~51.22/pc
Keyword Rubber Expansion Joint Standard
Standard DIN/ANSI/JIS/BS
Temperature Rating 200°F
Supply Ability 10000 sets per week
OEM/ODM for 20 Year's Experience
Connection Type Flanged
Place of Origin China
Surface Treatment Cold Galvanized
Standard Of Flange ANSI, DIN, JIS, EN, etc
Warranty Time 12 months
In Stock 20000
Rubber Joint Material EPDM,NBR,CR,PTFE,etc.
Operating Medium Water, Oil, Air, Chemicals
Installation Manual offer
Feature Small Volume
Brand Name JINGNING
Shape Round
Oem Yes
Nominal Diameter 32mm - 1800mm
Deflection Angle 10° - 15°
Certification CE,ISO
Resistance Corrosion and abrasion resistant
Customized Support OEM, ODM
Detailed Product Description

Anti-Corrosion PTFE Lining Rubber Expansion Loop: Industrial Strength Anti-Leak Flexible Coupler for Chemical Plants

Product Description

The Anti-Corrosion PTFE Lining Rubber Expansion Loop is a specialized, industrial-strength fluid control component engineered explicitly for the ultra-safe environments of modern chemical processing plants. Designed to solve the dual challenge of severe chemical corrosion and mechanical pipeline stress, this high-performance flexible coupler integrates a heavy-walled, zero-permeation PTFE (Polytetrafluoroethylene) liner into the core of a ruggedized elastomeric body. The internal PTFE shield completely isolates the outer structural rubber and high-tenacity reinforcement layers from hazardous, aggressive media, eliminating the risk of chemical degradation. Bound securely by heavy-duty metal backing flanges, this flexible loop functions as a vital safety buffer that dampens high-frequency pump vibrations, accommodates structural movements, and prevents catastrophic joint fatigue, delivering a highly reliable, leak-proof piping connection under the most punishing chemical exposures.

Performance characteristics

  • Industrial-Strength Anti-Leak Sealing: Engineered with an integrated flared PTFE face that wraps entirely around the sealing flange, creating a continuous, impenetrable barrier that prevents hazardous fluid seepage or creeping leaks at connection points.
  • Universal Chemical Defense: The high-density PTFE lining provides total resistance to almost all commercial chemicals, organic solvents, strong oxidizers, concentrated acids, and reactive alkalis, ensuring long-term material stability.
  • Superior Vibration Isolation & Shock Damping: The high-elasticity rubber exterior acts as a premium kinetic dampener, swallowing mechanical vibrations from chemical pumps, compressors, and dosing equipment to protect fragile downstream instrumentation.
  • Multi-Directional Displacement Loop: The optimized single-sphere geometry allows the coupler to seamlessly absorb concurrent axial elongation, axial compression, lateral shearing, and angular misalignments caused by thermal stress or ground settling.
  • High Flow Efficiency & Anti-Scaling: The mirror-smooth interior surface of the inner liner minimizes fluid friction loss and actively prevents chemical crystal precipitation or sediment scaling from adhering to the bore walls.

Product Specification

SizeLengthAllowable Movements in Operation
mminchmmAxial Compression mmAxial Extension
mm

Transverse Movement

mm

Angular Deflection mm
251130/15220121415°
321 1/495/130/15220121415°
401 1/295/130/15220121415°
502105/130/15220121415°
652 1/2115/130/15220121415°
803130/135/15220121415°
1004130/15220121415°
1255130/152/16520121415°
1506130/152/18520121415°
2008130/152/21020121415°
25010130/203/23020121415°
30012130/203/24525162215°
35014200/25525162215°
40016200/25525162215°
45018200/25525162215°
50020200/25525162215°
6002426025162215°
7002826025162215°
8003226025162215°
9003626025162215°
100040260/30025162415°
11004430025162415°
12004830025162415°

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


Rubber Expansion Joint Standard 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

Q1: What makes this expansion loop "industrial strength" compared to standard commercial joints?

Industrial-strength units are built to a much higher standard regarding material density and reinforcement. They utilize extra plies of high-tenacity synthetic nylon fabric and a thickened PTFE liner that undergo a specialized high-pressure vulcanization process. This ensures the loop can handle severe industrial pressure cycling and dangerous media without blistering, tearing, or fatiguing prematurely.

Q2: Do I need to purchase separate chemical-resistant gaskets for installation?

No, separate gaskets are not required. The PTFE liner extends through the inside of the joint and turns outward over the raised face of the rubber flange. This flared PTFE face creates a built-in, full-coverage gasket. When bolted tightly against your pipeline's mating flange, it forms an immediate, leak-proof, chemical-resistant seal.

Q3: How do the backing flanges assist in preventing leaks?

The connector utilizes heavy-duty, free-rotating metal backing flanges. Because they spin independently of the rubber body, technicians can line up the bolt holes perfectly without twisting or putting torque on the rubber and PTFE bellows during installation. Furthermore, their thick profile ensures uniform bolt pressure distribution, eliminating localized gaps that cause leaks.

Product Tags: PTFE lining rubber expansion loop   industrial strength rubber expansion joint   anti-leak flexible coupler for chemical plants  
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