The 6708-2RS is an ultra-thin section deep groove ball bearing engineered for applications demanding complete contaminant exclusion within severely limited axial space. Featuring dual contact rubber seals (2RS), this configuration provides superior protection against fine dust, moisture, and fluid ingress while maintaining permanent grease retention for truly maintenance-free operation. With a 40mm bore, 50mm outer diameter, and an exceptionally slim 6mm cross-section, it serves as a critical component for medical diagnostic equipment, laboratory instruments, and compact linear actuators where reliability cannot be compromised by environmental exposure.