Shanghai Songjiang Jingning Shock Absorber Co.,Ltd.
JINGNING Specialized In Rubber Expansion Joints
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Can be Customized Pipe Expansion Joint Flange Type PTFE Bellows
Product Description
Addressing complex piping geometries and thermal transients, the PTFE bellows incorporates advanced kinematic design principles. Its three-dimensional flexibility—permitting axial compression/extension, lateral offset, and torsional rotation—mitigates stress concentrations caused by building settlement, thermal cycling, or seismic activity. PTFE bellows core's low friction coefficient (μ < 0.1) facilitates smooth bending without energy loss, while the metallic reinforcement layer prevents over-extension and kink resistance. Tested to exceed 10,000 cycle durability in fatigue testing, this component minimizes maintenance requirements in marine exhaust systems, geothermal power plants, and nuclear reactor coolant loops. Optional FDA-compliant silicone-free liners are available for food-grade applications.
Performance characteristics
1. Flexibility: Accommodates axial, lateral, and angular movements.
2. Durability: Reinforced Rubber Joint provides long-lasting performance.
3. Corrosion Resistance: Resists aggressive environments and chemicals.
4. Noise & Vibration Reduction: Dampens vibrations and shock waves.
5. Ease of Installation & Maintenance: Compact design and standard flange connections facilitate installation and upkeep.
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
PTFE bellows 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’s the material of PTFE bellows?
A1:The material can be EPDM,NBR,CR,SBR..It depends on the working condition.
Q2:What’s the warranty period of PTFE bellows?
A2:We provide 18 months’ warranty.
Q3:What’s the working temperature of PTFE bellows?
A3:The working temperature is -20℃~100℃.
Q4:What’s the package?
A4:The package is carton box and strong plywooden case.