Ringfeder Corp. manufactures an extensive line of Power Transmission components including: elastomeric, rubber, and silicone engine flywheel couplings; shaft to shaft flexible and rigid couplings; torque limiters; and specialty keyless locking devices.\r\n\r\nRFC's extensive experience in coupling combustion engines with pumps, compressors, generators, and U-joint connections are reflected in their industry leading couplings.