Buna-N Gasket for 18" x 24" Multi-Bolt Raised Manhole (Model #MB-G1824-RSD)

Buna-N Gasket for 18" x 24" Multi-Bolt Raised Manhole (Model #MB-G1824-RSD)

The Model #MB-G1824-RSD is a flat-profile, full-face replacement flange gasket engineered specifically for larger 18" x 24" elliptical multi-bolt raised manholes. Fabricated from high-density Buna-N Nitrile rubber, this heavy-duty die-cut seal features a pre-punched bolt pattern designed to slide over the perimeter fasteners of raised coaming flanges to form an airtight and watertight vapor boundary. The material compound is optimized to withstand intense, concentrated perimeter clamping force without extrusion or tearing, ensuring absolute sealing integrity under severe green water wash and high tank pressures.

Key Features

  • Precision-Punched Bolt Pattern: Die-cut to line up perfectly with standard 18" x 24" elliptical raised coaming fasteners, enabling rapid alignment and drop-in field installation.
  • Superior Hydrocarbon & Oil Resilience: Impervious to swelling, degradation, or structural softening when in constant contact with marine fuels, hydraulic lubricants, and ballast tank sludge.
  • High Torque Extrusion Resistance: High-durometer formulation prevents the gasket profile from spreading or thinning unevenly when heavy clamping torques are applied across the bolt perimeter.