Full Face Rubber Expansion joint
DN25-DN2000
The Full Face Rubber Expansion Joint features an integral rubber flange extending across the entire flange face, providing self-sealing, leak-proof connection without additional gaskets. The rubber flange is molded seamlessly with the bellows body and supplied with steel backing flanges, drilled to match EN, ANSI, AWWA, BS, or JIS standards.
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Full Face Rubber Expansion Joint – Product Overview
Description
The Full Face Rubber Expansion Joint features an integral rubber flange extending across the entire flange face, providing self-sealing, leak-proof connection without additional gaskets. The rubber flange is molded seamlessly with the bellows body and supplied with steel backing flanges, drilled to match EN, ANSI, AWWA, BS, or JIS standards.
Key Features
- Full-face self-sealing – no gaskets needed
- Seamless integral flange and bellows
- Working pressure up to 2.5 MPa (25 bar); burst up to 4.5 MPa (45 bar)
- Absorbs axial, lateral, and angular movements
- Reduces vibration, noise, and water hammer
- Single or multiple arches for greater movement
- Optional vacuum ring for vacuum service
- Seamless integral flange and bellows
- Working pressure up to 2.5 MPa (25 bar); burst up to 4.5 MPa (45 bar)
- Absorbs axial, lateral, and angular movements
- Reduces vibration, noise, and water hammer
- Single or multiple arches for greater movement
- Optional vacuum ring for vacuum service
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Movement Capabilities (DN32–DN1000)
- Axial extension: up to 18 mm
- Axial compression: up to 26 mm
- Lateral displacement: up to 26 mm
- Angular deflection: up to 15°
- Axial compression: up to 26 mm
- Lateral displacement: up to 26 mm
- Angular deflection: up to 15°
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Materials
Rubber compounds:
- EPDM (-40°C to +120°C) – water, steam, seawater, acids – HVAC, water supply
- NBR (-30°C to +100°C) – oils, fuels – oil handling, mining
- Neoprene (-20°C to +90°C) – seawater, weathering – marine
- Natural Rubber (-20°C to +70°C) – abrasion resistant – slurry
- FKM (-20°C to +250°C) – high temp, aggressive chemicals
- EPDM (-40°C to +120°C) – water, steam, seawater, acids – HVAC, water supply
- NBR (-30°C to +100°C) – oils, fuels – oil handling, mining
- Neoprene (-20°C to +90°C) – seawater, weathering – marine
- Natural Rubber (-20°C to +70°C) – abrasion resistant – slurry
- FKM (-20°C to +250°C) – high temp, aggressive chemicals
Backing flanges:Carbon steel (standard), galvanized steel, stainless steel 304/316L. Split flanges available for large sizes.
Reinforcement:Nylon, aramid, or steel wire; support rings for high pressure/vacuum.
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