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Sea-Dog Line 321424-1 Gas Filled Lift Spring with Multi-Lobe Seal

Manufacturer

Sea-Dog Line

<h3>About Sea-Dog Line</h3><p>Few names in the marine industry carry as much history as <strong>Sea-Dog Line</strong>. Founded in 1923 and headquartered in Everett, Washington, Sea-Dog has spent over a century engineering and supplying dependable hardware for boaters, riggers, and marine professionals. Whether you are outfitting a small fishing boat or a serious offshore vessel, Sea-Dog's expansive catalog — spanning more than 2,400 products — is built around one principle: hardware that holds up when it matters most.</p><h3>A Century of Marine Innovation</h3><p>Sea-Dog Line began as a focused marine rigging and hardware supplier, and over the decades grew into one of the most comprehensive sources for anchoring, docking, boarding, and boat-management equipment in the industry. Their product line has expanded to include antenna accessories, trailer hardware, boat hooks, cabinet and hatch fittings, chain and rigging components, and a wide range of electrical accessories — all engineered to withstand the corrosive, high-stress environment of the marine world.</p><p>What sets Sea-Dog apart is a commitment to manufacturing quality that boat owners can rely on season after season. Their hardware is designed for real-world marine use, meaning saltwater resistance, UV stability, and structural durability are never afterthoughts.</p><h3>Marine Visibility & Windshield Systems</h3><p>One of Sea-Dog's highest-demand product areas is their line of <a href="/7549-sea-dog-line-windshield-washers-wipers-replacement-motors-201195">Windshield Washers, Wipers &amp; Replacement Motors</a>. Maintaining clear visibility on the water is a safety-critical function, and Sea-Dog supplies a broad assortment of wiper blades, washer systems, and complete replacement assemblies designed to fit a wide variety of marine windshield configurations. For boaters who need a direct drive solution, Sea-Dog's dedicated <a href="/7549-sea-dog-line-windshield-wiper-motor-8824">Windshield Wiper Motors</a> offer reliable performance in wet, high-vibration marine environments — a category where component quality directly affects on-water safety.</p><h3>Cockpit Comfort & Functionality</h3><p>Beyond hardware and visibility systems, Sea-Dog also brings practical innovation to the helm and cockpit with their <a href="/7549-sea-dog-line-cockpit-fillet-tables-200274">Cockpit &amp; Fillet Tables</a>. These tables are designed to maximize usable space aboard, whether you are prepping a catch, serving guests, or simply organizing gear. Sea-Dog's tables reflect the same build philosophy as all their hardware: functional, durable, and thoughtfully designed for the marine setting.</p><h3>Why Boaters Trust Sea-Dog Line</h3><ul style="list-style:disc"><li>Over 100 years of marine hardware expertise dating back to 1923</li><li>Headquarters in Everett, Washington, with a deep understanding of Pacific Northwest and offshore boating demands</li><li>A catalog of more than 2,400 products spanning virtually every marine hardware category</li><li>Products engineered for saltwater, UV exposure, and the vibration of on-water use</li><li>Trusted by recreational boaters, commercial operators, and marine riggers alike</li></ul><p>From rigging essentials to cockpit accessories and windshield systems, Sea-Dog Line remains one of the most complete and dependable marine hardware brands available today. Explore their full product range and find the right Sea-Dog components for your vessel.</p>

Part Number

321424-1
09/14/2036 10:15 AM
Sale Price

$17.79

4 left at this price

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Usually delivered within 2 days

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Fitment guaranteed

Fitment guaranteed

Product Details

The Sea-Dog Line 321424-1 is a premium gas-filled lift spring designed for marine applications requiring smooth, controlled lifting assistance. This heavy-duty gas spring features a unique multi-lobe seal design that provides superior durability and reliable performance in harsh marine environments.

Key Features:

  • Gas-filled lift spring with unique multi-lobe seal for enhanced durability and leak resistance
  • Heavy gauge steel body construction for maximum strength and longevity
  • Hard chromium plated shafts resist corrosion and provide smooth operation
  • Bronze bushings ensure low friction and extended service life
  • Polymer end fittings for secure mounting and reduced noise
  • Ideal for hatches, storage compartments, engine covers, and access panels

This gas spring provides consistent lifting force throughout its range of motion, making it easier to open and hold heavy lids and hatches in place. The corrosion-resistant construction ensures reliable performance in saltwater and freshwater environments.

Products specifications

Approximate Stroke

3"

Compressed Measurement

7"

Cylinder Size

15mm

Diameter: Rod

6mm

Extended

10"

To soon to tell

Excellent. So far. Hope to get the batteries

Great service. Thanks

Ordered a boat seat cooler. The picture in the description appeared larger than the actual size. I could tell as soon as I received it that it wasn't going to be the size I needed. I contacted them to ask if I could return it and they responded quickly with approval for a return even though I noticed on my receipt that it wasn't an item that you could return. Overjoyed they worked with me on this!

Easy to find what I was looking for.

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