We have NBR o ring kit of
(30 sizes, total 382pcs, AS568 standard) , model no: 5A

(30sizes, total 382pcs, JIS B 2401 standard) ,model no:5B

(30 sizes, total 386pcs, JIS B 2401 standard), model no: 5C

(32 sizes, total 407pcs, AS568 standard), model no:8B

(32 sizes, total 419pcs, JIS B 2401 standard), model no: 8C
http://www.nbroringkit.com