Aijiren Tech™ Septa for 8-425 Screw Thread Caps are constructed of PTFE, PTFE/rubber, or PTFE/silicone to suit a variety of HPLC, GC and IC applications. Choose from Aijiren Tech™, Aijiren Tech™ National™, and Aijiren Tech™ Chromacol™ brands. Product Overview Documents Showing 10 of 13 Show more Save to list Add to cart