Genuine Casio replacement rubber packing/o-ring in black.
 
Made for the following model(s):
ECB-800TR-2A, ECB-800DC-1A, ECB-800D-1A, ECB-800DB-1A,
 
EF-328D-7AV, EF-328D-1A5V, EF-328D-1AV, EQW-M710D-2A, EF-328ZD-1A5V, EF-328SG-1AV, EF-328ZD-1AV, EF-328ZD-7AV, EF-328ZSG-1AV, 
 
EQB-800DB-1A, EQB-501XD-1A, EQB-501DC-1A, EQB-700D-2A, EQB-700D-1A, EQB-501TRC-1A, EQB-501XYD-1A, EQB-501XDB-1A, EQB-501XYDB-1A, EQB-501DB-2A, EQB-501D-1A, EQB-501YDC-1A, EQB-800D-1A, EQB-800TR-1A, EQB-800BL-1A, EQB-500DC-1A, EQB-500RBK-1A, EQB-500DB-2A, EQB-500D-1A2, EQB-500D-1A, EQB-500L-1A, EQB-500RBB-2A, EQB-600D-1A2, EQB-510D-1A, EQB-600D-1A, EQB-510RBM-1A, EQB-510DC-1A, EQB-501XBL-2A, EQB-501XBL-1A, EQB-800BR-1A, EQB-501XBR-1A
 
EQS-700DB-1AV, 
 
EQW-T720D-1A, EQW-M710L-1A, EQW-M710-1A, EQW-M710DB-1A1, EQW-M710DC-1A, EQW-M710DB-1A2, EQW-M710DB-7A, EQW-T720DC-1A,