No rubber insulating gloves are safe forever. It is (and has been) common practice for rubber insulating gloves to be inspected daily before use and periodically retested at an electrical testing facility. ASTM F496 Standard Specification for In-Service Care of Insulating Gloves and Sleeves has provided guidance. Previously, section 7 of ASTM F496 was subject to interpretation and misunderstanding regarding the maximum test interval for either new gloves or in-service gloves. In 2024, the ASTM Committee F18 (Electrical Protective Equipment for Workers) addressed this issue with an update to the ASTM F496 standard clarifying the difference between new gloves (reference 7.1.1) and gloves previously put into service (reference 7.1.2).
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