Rubber Connector
Rubber Multi-Port Cable / Hose Connector
Rubber connectors are flexible elastomeric components designed to absorb vibration, accommodate movement, and protect electrical cables, communication lines, and pneumatic hoses installed between rail vehicles or within rolling stock assemblies.
The multi-port rubber connector (grommet type) enables organized routing of multiple cables or air lines through panels, inter-coach connections, bogie assemblies, and underframe structures while ensuring environmental sealing and mechanical protection.
Applications
1. Inter-Coach Connections
Used between railway coaches for:
- Electrical control cables
- Communication lines
- Brake system air hoses
- Signal wiring
Functions:
- Vibration and shock absorption
- Abrasion prevention
- Electrical insulation
- Dust and moisture sealing
2. Bogie & Underframe Installations
- Protection of cables passing through metal panels
- Reduction of vibration transfer
- Secure alignment of multiple lines
3. Brake & Pneumatic Systems
- Routing of air brake control lines
- Auxiliary pneumatic line organization
- Sealing against environmental contaminants
Key Features
- Multi-port design for organized cable/line management
- High flexibility and elasticity
- Excellent vibration damping
- Weather and UV resistance
- Oil and ozone resistance (material dependent)
- Long service life under harsh railway conditions
- All Products are UL90 HL30 VO
Typical Technical Specifications (Customizable)
- Hardness: 40–70 Shore A
- Operating Temperature: −40°C to +120°C (EPDM)
- Tensile Strength: ≥ 7 MPa
- Elongation at Break: ≥ 300%
- Color: Blue / Black / Custom
- Compliance: As per railway customer specification
Benefits in Railway Applications
Railway environments involve:
- Continuous vibration
- Mechanical shock
- Temperature fluctuation
- Outdoor exposure
Rubber connectors provide:
- Flexibility under dynamic loads
- Shock absorption
- Electrical insulation
- Environmental sealing
- Reduced maintenance costs
Material Options
- EPDM Rubber – Excellent weather, ozone, and heat resistance
- Silicone Rubber – Wide temperature range and flexibility
- Neoprene (CR) – Good oil and moderate weather resistance
- NBR – Suitable for oil-exposed applications