320pcs NBR Oring Seal Set 6.07*1.78*40pcs; 7.65*1.78*40pcs; 10.82*1.78*40pcs; 12.42*1.78*40pcs; 14*1.78*40pcs; 6.8*1.9*40pcs; 10.8*2.4*40pcs; 13.8*2.4*40pcs;