Shift linkages on which we vulcanize rubber are used in transmissions gear levers where the rubber on the surface acts as a silent block to limit the transmission of vibration from the transmission to the shifter. The rubber moulded to the surface of the metal rod can achieve various levels of hardness, the most common is around 35 - 50 ShA, but depends on specific customer specifications. NR is the most commonly used material.

 

pt634-001.jpg  pt639-001.jpg

These linkages come in different lengths but their basic shapes are similar as is clear from the images.