O-ring service kits: - ISO9001: 2008 standard OEM/ODM are welcomed O-ring service kits: ... Red, Black, Blue, Green, Yellow, White and so on. Standard size as follows: [1]30 sizes, total 382pcs, AS 568 ... no:5B[3]30 sizes, total 386pcs, JIS B 2401 standard, model no: 5C[4]32 sizes, total 407pcs, ... ]32 sizes, total 419pcs, JIS B 2401 standard, model no: 8C Non-standard size is also allowed, such as 102pec, ...