This B-927 material is ideal for marking applications that require a material that is both durable outdoors and tamper resistant.
National Electrical Manufacturers Association (NEMA) recommends use of Mr. Ouch" labels on transformers located in public areas. Our transformer markers meet the NEMA Standard as well as Underwriters Laboratory Performance Standard #969. Markers are made of B-927 tamper-resistant film to prevent defacing and vandalism. Their permanent pressure sensitive acrylic adhesive provides a strong bond to steel and other clean, dry surfaces."