Why do rubber electrical gloves have a date stamp on them?
According to the Occupational Safety and Health Administration (OSHA) in 29 Code of Federal Regulations (CFR) 1910.137(c)(2)(viii), all electrical gloves must be tested periodically and prior to being placed into service. All glove manufacturers incorporate some form of production code or date coding to indicate the date of initial testing. Rubber insulating gloves must be tested before first issue and every six months thereafter or upon indication that the insulating value is suspect; after repair; and after use without protectors. Also, if the insulating equipment has been electrically tested but not issued for service, the insulating equipment may not be placed into service unless it has been electrically tested within the previous 12 months. For additional information on in-service care of electrical gloves reference ASTM F496-14a.
These testing requirements can sometimes be a little confusing to interpret. Here’s an example: You’re considering using your electrical gloves for the first time on January 1, 2017, and notice the date stamp is November 1, 2016. Would you need to get the gloves retested before use? No, because you will be putting the gloves into service within the allowable 12 month window.