Common Questions & Technical Support Is the 20403301 a direct substitute for the 20403302

System Safety: Provides a reliable 249

including gas and electric furnaces and heat pump systems

Ensure the 24V coil voltage matches your system's control circuit

engineered to facilitate high-precision movement between non-parallel shafts

TB Woods 4JE Insert Common Questions & Technical SupportThe TB Woods 4JE flange insert is a single piece, solid construction EPDM sleeve specifically engineered for Sure Flex Plus size 4 couplings. This high performance elastomer provides excellent torsional flexibility and is designed to handle angular misalignment, parallel offset, and axial movement in power transmission systems. As a veteran grade elastomeric coupling insert, the 4JE is ideal for applications involving high humidity or atmospheric