The trend in the marketplace for molded silicone rubber parts has been toward the use of liquid silicone injection rubber (LSR) due to its ease of processability, design versatility, excellent quality and productivity gains. They can be sterilized via ethylene oxide, gamma or E-beam irradiation, steam autoclaving and various other methods. Manufacturers of medical devices are increasingly looking toward silver compounds as antimicrobial agents. Silver works in a number of ways to disrupt critical functions in a pathogen's metabolism. Test method AATCC 100-2004, modified for silicones, provides a quantitative procedure for the evaluation of the degree of antibacterial activity. Assessment of antibacterial activity finishes on textile material is determined by the degree of antibacterial activity intended in the use of such materials. The health care Silopren LSR 4000 product range comprises a range of liquid silicone rubbers with hardnesses between 30 and 80 durometer. This product range fulfills all requirements for use in medical devices and pharmaceutical applications.