Buna-N Gasket for 18" x 24" 4-Dog Raised Bolt Hatch (Model #DB-ORNG-1824)

Buna-N Gasket for 18" x 24" 4-Dog Raised Bolt Hatch (Model #DB-ORNG-1824)

The Model #DB-ORNG-1824 is a high-density replacement perimeter gasket engineered specifically for larger 18" x 24" elliptical 4-dog raised bolt hatches and manholes. Fabricated from commercial-grade Buna-N Nitrile rubber, this heavy-duty molded O-ring seal drops directly into the cover plate's seating channel to establish a dependable airtight and watertight boundary. It is specially formulated to withstand the intense, localized perimeter compression force applied by swing-bolt dogging mechanisms, resisting long-term compression set and flattening across wider spans on open weather decks.

Key Features

  • High-Load Compression Resistance: Engineered to maintain cross-sectional thickness and elastic memory under heavy, concentrated dogging arm pressures without stretching out of alignment.
  • Petroleum & Chemical Resilience: Excellent defense against degradation, swelling, or rotting when in constant contact with marine diesel, bilge water, hydraulic oil, or fuel sludge.
  • Seamless Loop Integrity: Factory-vulcanized as a solid continuous loop to prevent split-point or seam joint blowouts under static hydrostatic tank pressures and green water pounding.