1/8 Ferrule TF-68 - 1/8'' X 1/16'' ID, Reducing PTFE Ferrule, 10/PAK Ohio Valley Specialty Company Ohio Valley Specialty Co. [ TF-68 ] 1/8 X 1/16 Reducing PTFE Ferrules, 10 Pack : : Industrial & Scientific. Skip to. Main content About this item About this item Buying options Compare with similar items Videos Reviews Keyboard shortcuts Search. alt + / Cart. shift + alt + C. Home. shift + alt + H. Orders. shift + alt + O. Add to cart... Reusable if not overtightened, seals at one quarter past fingertight Ohio Valley Specialty ferrules are thermally conditioned and ready for immediate high temperature GC use. Composition: Polytetrafluoroethylene Large ID 100% Graphite Ferrules from Ohio Valley Specialty Company Does not stick to glass or metal GIGALUMI Solar Lights for Outdoors, Pack of 6 LED Solar Garden Lights, Solar Powered Lights for Garden, Patio, Balcony, Landscape, Walkway, Path (Warm White