O ring kits Model:LRD Size:30 different size material:NBR,VITON EPDM,Silicone.. Hardness:60-90 ShoreA O ring kit (LRD-07)1.Kinds: 30 sizes = 385pcs2.Apply for auto,machines,air-conditioner,furniture and home appliance.3.NBR,EPDM,VITION,SILICONE,HNBR,CR,all material we can do.4.Any color,can be chose.5.Size AS568,PG series,all spec we can do.6.OEM and produce according to the drawing.7.Packing on ...