Bosch 1900210117 O-Ring for CSB 450 RLE, CSB 480 RE, CSB 500 RE, CSB 500 RE / CSB 5-13, CSB 500 RET, CSB 500 SRE, CSB 500-2, CSB 500-RLE, CSB 550 RE, CSB 550 RET, CSB 550 RP, CSB 550 SRE, CSB 550-2, CSB 560 RE, CSB 570 RP, CSB 6-20 RE, CSB 620 IP, CSB 650-2, CSB 650-2 RE, CSB 650-2 RET, CSB 650-2 RP, GBH 10 DC, GBH 11 DE, GSB 16, GSB 16 RE, GSB 18-2, GSB 18-2 RE, GSB 2-600 RE, GSB 2-650 RE, PSB 680-2 RPE