Ready assembled crimp closures N 8 and plain crimp caps N 8 70283 70252.1 702025 70289 702878 702800 Cap description Septa description Thickness Pack of REF N 8 aluminium crimp cap, silver, center hole PTFE virginal, white 0.25 mm 100 70283 N 8 aluminium crimp cap, silver, center hole Natural rubber / Butyl red-orange / TEF color-less