Imedical Healthcare Solutions
The Stryker LUCAS 3 Bumpers (1 Pair) (#11576-000091) are rubber seals that can be placed over the hinge end caps, to protect both the user and the hardware from damage. These are designed for use with the LUCAS 3 device. Each order comes with two rubber bumpers. 
Warranty: 90 Days. 
Stryker LUCAS 3 Chest Compression System Brochure
Stryker LUCAS 2/3 Chest Compression System Genuine Accessories Guide