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Freeman Compression seal gasket Model 30 (30" / 762 mm)
€133.70
Freeman Low-friction nylon washer for hatch mechanism
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Deck hatches & spare partsSpare Parts & MaintenanceSpare Parts – Square and Rectangular HatchesModel 3030 (30" x 30")

Spare Parts for Freeman Marine Model 3030 Square Deck Hatches (30" x 30" / 762 x 762 mm)

Welcome to Bövik Marin AB – authorized European supplier of genuine factory replacement parts for Freeman Marine Model 3030 square cast deck hatches. Offering a massive 30 x 30 inch (762 x 762 mm) clear opening, Model 3030 is an oversized commercial closure engineered for heavy machinery spaces, generator and pump rooms, cargo transfer, and certified personnel transit across Coast Guard cutters, research vessels, trawlers, tugs, and work barges.

Model 3030 (Series 2427 lift-out / Model 3030K and Series 2466 hinged / Model 3030-HK) is built with Freeman's heavy-weather knife-edge sealing system. To guarantee uncompromising watertight integrity across this 762 x 762 mm clear span, the mechanism is equipped from the factory with reinforced 18.50-inch 316 stainless steel dog arms. A central 4-hole cam hub synchronizes the arms to distribute immense, uniform clamping force around the perimeter in under a quarter-turn via the flush deck handle or inside emergency escape handle.

Below you will find all genuine mechanical and elastomeric components required for scheduled maintenance, survey overhauls, and complete mechanism rebuilds for Model 3030:

Model 3030 Component Directory (Featured Items Below):

1. Sealing System & Gaskets • Knife-Edge alu ring lift-out (Part no. 9813-2005)
• Knife-Edge steel ring (Part no. 9885-2001)
• Knife-Edge alu ring hinged (Part no. 9835-2005)
Hollow D-profile marine neoprene (762x762 mm).
2. Dogging Mechanism & 316 Arms • 316 Stainless Dog Arm 18.50" (Part no. 0212-2013)
• 4-Hole Cam Hub (Part no. 0011-2002)
• Optional: Solid 316 S/S cam hub
3. Actuation & Drive Shaft • Flush Deck Handle 316 S/S
• Handle Spindle & Roll Pins (15"+ standard)
• Inside Escape Handle Assemblies
4. Center Bushing & Hardware • Universal Bushing Overhaul Kit (Part no. 0031-2204)
• Cam Buttons / Wear Pads (Part no. 0621-2004)
• Nylon Thrust Washers (Part no. 0413-2005)

Technical Guide: Maintenance and Mechanism Specification for Model 3030 Square

The square geometry of Freeman Model 3030 (Series 2427 & 2466) is engineered for heavy commercial duty where maximum deck cutout dimensions are required for lowering or hoisting bulky machinery parts. Operating a deck closure across a 762 x 762 mm span imposes immense structural loads, which is why Freeman equips Model 3030 with reinforced 316 stainless steel components.

1. 18.50-Inch 316 Stainless Steel Dog Arms (Part no. 0212-2013)

  • Reinforced Mechanical Linkage: Model 3030 utilizes four 18.50-inch dog arms (470 mm) investment-cast in solid AISI 316 stainless steel. These heavy-duty arms resist high bending deflection as the neoprene gasket is compressed against the perimeter knife-edge.
  • Cam Hub & Cam Buttons: The arms are driven by Freeman's central 4-hole marine aluminum cam hub (Part no. 0011-2002). During scheduled maintenance, inspect dog arms for straightness, renew nylon cam buttons (Part no. 0621-2004), and lubricate all hub tracks with high-adhesion marine grease (e.g., Vickers Biogrease EP2).

2. Knife-Edge Gasket Specification: Aluminum vs. Steel Coaming

The coaming on Model 3030 features a machined knife-edge rim flanked by a deep perimeter drainage gutter. The replacement gasket is a hollow D-profile marine neoprene elastomer designed to seat securely into the cover channel:

  • Aluminum Coamings – Lift-Out (Part no. 9813-2005): Precision-molded gasket tailored for Model 3030K lift-out covers.
  • Aluminum Coamings – Hinged (Part no. 9835-2005): Profiled with dedicated corner radii for Model 3030-HK hinged hatches.
  • Steel Coamings (Part no. 9885-2001): Specifically profiled with adjusted base width for Freeman steel weld-in rings to resist high contact pressure and severe hull vibration.

3. Center Bushing & Spindle Sealing

Moisture weeping beneath the flush deck handle indicates worn spindle O-rings. Model 3030 utilizes Freeman's heavy-duty Universal Center Bushing Overhaul Kit (Part no. 0031-2204), containing a marine-grade sleeve bushing, dual O-rings, and stainless roll pin. Always coat O-rings with waterproof marine grease during reassembly.

Need a Complete New Hatch Assembly or Replacement Deck Coaming?

If your coaming has suffered structural damage or you are engineering a new machinery access opening, explore complete hatch assemblies and genuine factory coamings:

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