FASTNER SEAL, STEEL PLATED,

This Buna-N NBR Fastener Seal, item AFS600-0101-1/4, is designed for buyers who need a clear specification match for sealing around bolts, screws, threaded connections and fastener heads where leakage control is required. The item is specified by 0.25 inch (6.35 mm) ID, giving buyers a clear dimensional reference for matching the seal to the groove, shaft or bore. Its Buna-N nitrile (NBR) material provides oil, grease, fuel and general hydraulic fluid resistance in common industrial equipment. It is with a listed temperature range of -40°F (-40°C) to 250°F (121°C), which can help narrow material selection for heat, cold or process exposure. The black color and formed profile provide a practical visual identifier during receiving, stocking and installation. As a fastener or thread seal, it is suited for sealing around hardware where fluid migration through a joint must be controlled. The each-unit format supports precise replacement, kitting, resale and job-specific purchasing. Common purchasing identifiers for this product include the material name, O-ring type, dimensional size, hardness and intended sealing application. Those attributes make the item easier to compare for maintenance, OEM production, MRO replacement and reseller catalog use.