The NILOS Rings 1305 AV by Nilos are the perfect solution for sealing self-aligning ball bearings with an inner diameter of 25 mm, an outer diameter of 54.8 mm, and a width of 2.5 mm. Weighing only 0.005 kg, they are easy to handle and provide a reliable seal. Made of galvanized special band steel and in an externally sealing design, they are durable and effective. Get the NILOS Rings 1305 AV for your applications to protect your rolling bearings optimally.