Shanghai Songjiang Jingning Shock Absorber Co.,Ltd.
| 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 |
| 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 |
| 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 |
| Feature | Small Volume |
| Resistance | Corrosion and abrasion resistant |
| Customized Support | OEM, ODM |
| Shape | Round |
| Oem | Yes |
| Nominal Diameter | 32mm - 1800mm |
| Deflection Angle | 10° - 15° |
| 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 |
| Model Number | RLJS |
| Certification | CE，ISO |
| Brand Name | JINGNING |
| Place of Origin | China |
View Detail Information
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Product Specification
| 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 | 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 | 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 | Feature | Small Volume |
| Resistance | Corrosion and abrasion resistant | Customized Support | OEM, ODM |
| Shape | Round | Oem | Yes |
| Nominal Diameter | 32mm - 1800mm | Deflection Angle | 10° - 15° |
| 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 | Model Number | RLJS |
| Certification | CE，ISO | Brand Name | JINGNING |
| Place of Origin | China | ||
| High Light | PTFE lined flanged expansion joint ，shock-absorbing rubber bellows expansion joint ，acid line rubber expansion joint | ||
Zero-Permeation PTFE Lined Flanged Expansion Joint: Shock-Absorbing Rubber Bellows for Concentrated Acid Lines
Product Description
The Zero-Permeation PTFE Lined Flanged Expansion Joint stands as an elite security component engineered specifically for the extreme demands of concentrated acid lines and hazardous chemical processing networks. Transporting highly volatile fluids like concentrated sulfuric, hydrochloric, or nitric acids requires a system that eliminates all risk of chemical weeping, environmental contamination, or joint failure. This heavy-duty flanged expansion joint achieves maximum safety by fusing an ultra-high-density, zero-permeation PTFE (Polytetrafluoroethylene) liner directly within a multi-layered, reinforced rubber bellows.
The seamless interior PTFE barrier completely isolates the structural elastomer and high-tensile fabric matrix from the chemical stream, preventing micro-permeation, material blistering, and chemical degradation. Combined with robust, free-rotating backing flanges that ensure a secure, uniform bolt load, this shock-absorbing rubber bellows neutralizes intense hydraulic pulsations, accommodates significant thermal movement, and dampens mechanical pump vibrations, keeping your high-risk chemical piping infrastructure secure, leak-free, and operational.
Performance characteristics
Zero-Permeation Barrier: Fabricated using a high-density, specialized molecular structure of pure PTFE that effectively prevents micro-porosity and gas/liquid permeation, even when handling highly concentrated, aggressive acids.
Total Chemical Resistance: The structural inner liner remains completely inert and unaffected when exposed to the most destructive chemicals, strong oxidizers, volatile solvents, and reactive inorganic acids across its entire operational spectrum.
Premium Kinetic Shock Absorption: The heavy-duty elastomer exterior housing acts as a highly efficient vibration isolator, absorbing solid-borne noise, high-frequency motor hums, and sudden pressure surges from chemical transfer pumps.
Multi-Axial Displacement Relief: The flexible single-sphere bellows configuration yields smoothly to dynamic pipeline stress, simultaneously compensating for axial compression, axial extension, lateral shear, and angular piping misalignments.
Flared Full-Face Integrity: The internal PTFE liner extends completely through the throat and flares outward across the entire flange sealing face, creating an integrated, chemical-proof gasket surface that completely seals out moisture and corrosive fumes at the joint interface.
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 |
6. Packaging |
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
In high-concentration chemical systems, standard plastic liners can sometimes allow microscopic amounts of aggressive gases or fluids to seep through their molecular gaps over time—a process called permeation. Our zero-permeation PTFE lining undergoes a specialized high-density manufacturing process that eliminates these microscopic voids, ensuring that even volatile concentrated acids cannot pass through to attack the outer rubber casing.
While exotic alloys can resist corrosion, they are highly rigid, susceptible to fatigue cracking from continuous vibration, and significantly more expensive. A PTFE-lined rubber joint provides the absolute chemical defense of a fluoropolymer combined with the superior vibration damping, shock absorption, and high-flexibility traits of a heavy-duty elastomer.
Yes, because the turned-over PTFE face acts as the built-in, full-surface gasket, ensure that the mating pipeline flanges are entirely clean, flat, and free of sharp burrs before installation. Tighten the backing flange bolts in a progressive, star-pattern sequence using a torque wrench to achieve an even seal without over-compressing the liner.
Company Details
Business Type:
Manufacturer
Year Established:
2004
Total Annual:
30000000-50000000
Employee Number:
100~200
Ecer Certification：
Verified Supplier
Jingning is a specialist company in expansion joints for pipe equipment. Since 2004 we stand for values which are typical of a family owned company: the spirit of innovation, reliability, continuity and flexibility in thought and action.We are a reliable supplier to our customers who count... Jingning is a specialist company in expansion joints for pipe equipment. Since 2004 we stand for values which are typical of a family owned company: the spirit of innovation, reliability, continuity and flexibility in thought and action.We are a reliable supplier to our customers who count...
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