Rubber & Silicone Bellows
Molded bellows compensating axial, lateral and angular pipe movement - 1M+ cycle fatigue life.
Overview
Rubber bellows are molded convoluted elements that compensate axial extension/compression (plus/minus 20%-50% of nominal length), lateral deflection and angular movement in piping systems. Integral molding with no seams eliminates the stress-corrosion risk of welded metal bellows, while low elastic reaction force places minimal stress on pipe supports. Tested to over 1 million cycles of repeated extension/compression without rupture.
Key Features
- Large displacement compensation in axial, lateral and angular directions
- Low elastic reaction force even under high pressure
- Over 1 million fatigue cycles without rupture or leakage
- Seamless integral molding - no stress-corrosion risk
- Transparent silicone grades allow visual inspection of media flow
Applications
- Water and HVAC piping: thermal expansion compensation
- Pumps and compressors: vibration isolation joints
- Chemical and food process lines
- Automotive: steering and exhaust applications
- Dust collection and ventilation ducting
Specifications
- Material
- EPDM / NBR / Neoprene / silicone
- Movement
- Axial ±20%-50% · lateral · angular
- Temperature
- -40°C ~ 130°C (silicone higher)
- Fatigue life
- 1,000,000+ extension/compression cycles
- Construction
- Integral molded (seamless) · flanged or threaded ends
Customization & Manufacturing
Size, convolutions and end fittings per drawing; material by media and temperature; custom flanges; samples in 7-12 working days.
Need this part customized?
Send your drawing or sample — samples in 7-12 working days, AI-assisted quote within 24 hours.