Buna-N Gasket for 19" 4-Dog Raised Bolt Hatch (Model #DB-ORNG-0020)

Buna-N Gasket for 19" 4-Dog Raised Bolt Hatch (Model #DB-ORNG-0020)

The Model #DB-ORNG-0020 is a high-density replacement perimeter gasket engineered specifically for 19" round 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 sealing channel to form an airtight, watertight seal. It is specially formulated to withstand the intense, localized perimeter compression force applied by 4-dog clamping mechanisms, resisting long-term compression set and flattening on exposed 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 circle to prevent split-point or seam joint blowouts under static hydrostatic tank pressures and green water pounding.