Bomar Hatch Parts: Complete Guide to Bomar Hatches, Replacement Parts & Parts Catalog
Deck hatches provide critical ventilation, natural sunlight, and escape access below deck while protecting your vessel interior from heavy spray, rain, and green water. Among marine hardware manufacturers, Bomar (a division of Pompanette) stands out as a world leader in deck hatch engineering. Found on everything from recreational cruisers and tournament fishing boats to commercial vessels, Bomar hatches are built for demanding marine environments.
However, constant exposure to intense ultraviolet radiation, saltwater corrosion, and physical wear eventually takes a toll on rubber gaskets, acrylic lenses, hinges, and latching dogs. When a hatch begins to leak or becomes difficult to secure, replacing specific worn hardware is far faster and more cost effective than replacing the entire hatch assembly. Finding the right Bomar hatch parts allows you to restore watertight integrity and smooth mechanical operation.
What Are the Different Bomar Hatch Series and Designs?
To source the correct replacement hardware, you must first identify the specific product line installed on your boat. Bomar manufactures several distinct hatch series, each utilizing different frame profiles, hinge mechanisms, and sealing materials:
● Low Profile & Extruded Aluminum Series: Sleek, low clearance hatches constructed with heavy duty extruded aluminum frames and smoked acrylic lenses. Popular on modern powerboats and sailboats.
● 100 Series Cast Aluminum: Classic, heavy duty hatches made from cast Almag-35 aluminum with stainless steel hardware. Known for extreme strength on offshore vessels and commercial working craft.
● 900 Series & Gray Series Molded Hatches: Lightweight, high impact UV stabilized polypropylene or polycarbonate hatches featuring quick action locking dogs. Commonly used as deck access hatches and ventilation ports.
● SS Voyager Series: Premium mid profile stainless steel hatches engineered for maximum corrosion resistance in harsh offshore conditions.
Because parts are not universally interchangeable across all series, identifying your frame material and series layout is the essential first step.
Which Essential Replacement Hardware Is in the Bomar Parts Catalog?
When inspecting your deck hardware for wear, several key mechanical and sealing components routinely require service or replacement over time:
1. Gaskets and Weatherstripping
The rubber seal running along the inside flange or frame channel prevents water from penetrating your cabin. Over time, rubber gaskets flatten, dry out, or crack due to sun exposure. Bomar hatches replacement parts include specialized extruded hollow core and solid foam gasket materials sold by the foot or in pre cut kits to restore an airtight, watertight seal.
2. Latch Dogs and Handles
The internal handles, often referred to as latch dogs, pull the hatch lid tight against the frame seal. Whether phenolic plastic or cast aluminum, dogs can wear out, crack at the roll pin, or loose tension after years of heavy use. Sourcing replacement tie down dogs, T handles, and internal female or male adjusting knobs restores secure latching action.
3. Riser Arms and Adjusters
Riser arms hold the hatch open at desired angles to capture sea breezes while keeping the heavy lid from slamming shut in rough seas. Friction adjusters, riser arm brackets, and sliding adjuster arms wear down at the pivot points or thumbscrew threads. Replacing a worn Bomar hatch riser arm guarantees that your hatch stays open securely when ventilated.
4. Lenses, Screens, and Trim Rings
UV rays can cause smoked acrylic lenses to craze, cloud, or scratch over decades of exposure. Acrylic lens replacements, insect screens, internal finishing trim rings, and replacement hinge pins let you refurbish an existing frame without removing the bedded deck flange.
How Do You Use a Bomar Hatch Parts Diagram to Identify Components?
Identifying the exact component you need can be challenging if the part number is no longer visible on your old hardware. Utilizing a Bomar hatch parts diagram simplifies this process.
An exploded schematic diagram illustrates how every washer, O-ring, riser arm pin, handle base, and frame seal fits together. When referencing a Bomar parts catalog or diagram:
1. Locate the Model Number: Check the underside of the hatch lid, interior frame edge, or original vessel owner manual for model codes (such as N1039, 900 Series, or 100 Series).
2. Measure the Frame and Lens: Take precise measurements of the cut out size, overall exterior frame dimensions, and lens thickness.
3. Verify Orientation: Note whether mechanical hardware like riser arms or dog assemblies are designed for left hand or right hand mounting on your frame.
Matching your visual component against official diagram references prevents ordering incorrect thread sizes or seal profiles.
Where Can You Source Quality Marine Parts and Guides?
If you need to source authentic components or replace worn hardware on your vessel, explore the wide selection of Bomar Hatch Parts available through Fawcett Boat Supplies.
From replacement gaskets and riser arms to complete hatch assemblies and trim rings, visit Fawcett Boat Supplies to find top tier marine hardware and expert assistance for all your onboard maintenance projects.
How Do You Replace Hatch Gaskets and Hardware Step by Step?
Replacing basic wear components on your deck hatch is a simple DIY project that requires basic hand tools:
● Clean the Sealing Channel: When replacing gasket material, completely remove the old compressed rubber and scrape away residual adhesive using a plastic scraper. Wipe the channel clean with isopropyl alcohol to ensure strong adhesion for the new seal.
● Install the Gasket Without Stretching: Press the new rubber gasket firmly into the frame track. Avoid stretching the material during installation, as stretched rubber will shrink over time and create gaps at the corners.
● Replace Hardware Pins and Bushings: When installing new latch dogs or riser arms, drive out old roll pins carefully using a punch. Apply marine lubricant or anti seize compound to stainless steel fasteners before reassembly to prevent galling.
● Adjust Latch Dog Compression: Test the hatch closure after installing new hardware. The latch handles should lock firmly into place with moderate hand pressure, creating uniform compression along the entire perimeter gasket.
Frequently Asked Questions
Where can I find the correct model number on my Bomar hatch?
Model numbers are typically stamped or printed on the underside of the aluminum or molded plastic frame, near the interior flange or under the rubber gasket edge. If the label has worn off, measure the deck cutout dimensions, lens shape, and frame profile to cross reference the model in a Bomar parts catalog.
How do I know what size gasket material to buy for my hatch?
Gasket profiles vary across low profile, cast, and molded hatch lines. Measure the width and depth of the seal channel in your frame, or check your hatch model against the parts list. Gaskets are frequently sold per foot, so measure the total perimeter of your hatch opening and add a few extra inches for clean corner cuts.
Can I replace a cracked Bomar hatch lens without removing the deck frame?
Yes, on most series you can replace the acrylic lens without removing the lower frame from the deck bedding. The old lens is detached by removing the hinge pins, latch assemblies, and sealing sealant. Clean the frame thoroughly before bedding the new lens with a marine grade structural silicone sealant.
What is the difference between a Bomar deck hatch and a portlight?
A deck hatch is mounted horizontally on the deck or cabin top to provide overhead ventilation, light, and passage. A portlight (or porthole) is smaller and mounted vertically on the side of the hull or cabin trunk primarily for side illumination and airflow. Both utilize similar gaskets and knobs, but their frame structures and opening mechanisms differ.
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