BUNA 90 ORING 3 MM XS X 45 MM ID

Use item H90M3X45 when a Buna-N NBR 90A Metric O-Ring is required for metric equipment, imported machinery, fluid power assemblies and replacement sealing applications. The item is specified by 45 mm (1.772 inch) ID x 3 mm (0.118 inch) CS; 51 mm (2.01 inch) OD, giving buyers a clear dimensional reference for matching the seal to the groove, shaft or bore. The Buna-N nitrile (NBR) construction supports 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 round profile provide a practical visual identifier during receiving, stocking and installation. Metric sizing supports imported equipment, metric gland designs and replacement work where inch-series AS568 dimensions do not apply. The each-unit format supports precise replacement, kitting, resale and job-specific purchasing. Important product identifiers include O-rings, replacement seals, fluid sealing, material compatibility and dimensional fit. It supports customer comparison, distributor cataloging and specification-based selection without relying on pricing, availability or shipping claims.