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Premium PTFE Lined Flexible Bellows Coupler: Weatherproof Fluoroplastic Injected Expansion Joint for Hazardous Media

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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

Premium PTFE Lined Flexible Bellows Coupler: Weatherproof Fluoroplastic Injected Expansion Joint for Hazardous Media

Model Number	RLJS
Color	Black
Businese Type	Rubber expansion joints manufacturer
Axial Displacement	6-18 mm
Supply Ability	10000 sets per week
OEM/ODM	for 20 Year's Experience
Connection Type	Flanged
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
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	EPDM,NBR,NR, CR, FKM
Main Frame	Nylon Cord Fabric
Head Code	Round
Material Of Flange	Q235, SS304, SS316, SS316L
Working Temperature	-20℃~150℃
Packaging Details	carton or wooden
Product Drawings	Offer
Feature	Small Volume
Certification	CE，ISO
Resistance	Corrosion and abrasion resistant
Customized Support	OEM, ODM
Brand Name	JINGNING
Shape	Round
Oem	Yes
Nominal Diameter	32mm - 1800mm
Deflection Angle	10° - 15°
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

Detailed Product Description

Premium PTFE Lined Flexible Bellows Coupler: Weatherproof Fluoroplastic Injected Expansion Joint for Hazardous Media

Product Description

The Premium PTFE Lined Flexible Bellows Coupler is a high-security engineering component purpose-built for the safe management of hazardous, toxic, and volatile media in demanding outdoor environments. When conveying dangerous fluids, pipeline infrastructure must not only resist internal chemical degradation but also withstand external environmental weathering. This advanced expansion joint answers the call by utilizing a premium PTFE (Polytetrafluoroethylene) inner liner seamlessly bonded within a weather-hardened, weatherproof elastomeric exterior shell.

The internal fluoropolymer barrier isolates hazardous chemicals, preventing micro-leakage and environmental contamination, while the rugged outer cover is formulated to repel intense ultraviolet (UV) radiation, atmospheric ozone, and extreme temperature fluctuations. Supported by heavy-duty backing flanges, this flexible bellows coupler effectively dampens destructive machinery vibrations and absorbs multi-axial thermal expansions, ensuring total system integrity and absolute peace of mind under the most severe operational and environmental conditions.

Performance characteristics

Hazardous Media Containment: The high-density, non-porous PTFE lining acts as a secure, chemically inert barrier that completely prevents the permeation or leakage of hazardous, volatile, or toxic industrial fluids.
All-Weather Exterior Defense: The outer elastomer layer features a specialized weatherproof compound that resists cracking, dry rot, and embrittlement caused by continuous exposure to sunlight, UV rays, coastal salt air, and freezing winter temperatures.
High-Efficiency Vibration Isolation: The heavy-duty elastic bellows design acts as a premium kinetic energy dampener, absorbing mechanical pulsations and high-frequency vibrations from chemical transfer pumps to prevent pipeline fatigue.
Omni-Directional Movement Relief: Engineered to accommodate severe system stresses, smoothly compensating for simultaneous axial compression, axial extension, lateral shearing, and angular misalignments caused by thermal expansion or ground settling.
Integrated Flared Face Gasket: The internal PTFE liner extends through the bore and flares outward across the entire sealing face of the flanges, creating a built-in, full-coverage chemical gasket that guarantees a leak-proof seal at connection points.

Product Specification

Size		Length	Allowable Movements in Operation
mm	inch	mm	Axial Compression mm	Axial Extension mm	Transverse Movement mm	Angular Deflection mm
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

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 flexible coupler safe for handling "hazardous media"?

Hazardous media require zero-tolerance engineering against leakage and permeation. This coupler achieves this by utilizing an ultra-pure, high-density PTFE liner that eliminates microscopic voids. This prevents dangerous chemical vapors or fluids from migrating through the liner into the structural rubber body, ensuring absolute containment of toxic, acidic, or volatile substances.

Q2: How does the "weatherproof" outer cover extend the service life of outdoor pipelines?

Standard industrial rubber components can rapidly degrade, stiffen, and crack when exposed to outdoor sunlight and ozone. The exterior shell of this premium coupler is blended with specialized anti-ozonants and UV-blockers. This ensures the bellows remains flexible and fully functional across decades of changing seasonal cycles without requiring external protective shielding.

Q3: Do I need to install additional gaskets when connecting this coupler?

No separate gaskets are needed. The internal PTFE lining is designed with a flared, turned-over face that wraps entirely around the raised face of the flange. This continuous fluoropolymer surface acts as its own high-quality, full-face chemical gasket, creating an immediate, dependable seal when bolted against the mating pipe.

Product Tags: PTFE lined flexible bellows coupler weatherproof fluoroplastic expansion joint hazardous media expansion joint

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Premium PTFE Lined Flexible Bellows Coupler: Weatherproof Fluoroplastic Injected Expansion Joint for Hazardous Media

Premium PTFE Lined Flexible Bellows Coupler: Weatherproof Fluoroplastic Injected Expansion Joint for Hazardous Media

Q1: What makes this flexible coupler safe for handling "hazardous media"?

Q2: How does the "weatherproof" outer cover extend the service life of outdoor pipelines?

Q3: Do I need to install additional gaskets when connecting this coupler?

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