Sea-Dog Gas Filled Lift Spring 321483-1, 20 Inch Extended Length, 30 Lbs Force, Marine and RV Hatch Support

The Sea-Dog 321483-1 is a gas filled lift spring built to marine OE standards for supporting hatches, doors, and lids that need to stay open safely on their own. It extends to 20 inches and compresses to 12 inches, giving a stroke of 8-1/8 inches, and delivers 30 pounds of lifting force to hold mid-weight panels in place without a separate prop rod or latch. The shaft is hard chromium plated for corrosion resistance, the pivot points ride on bronze bushings for smooth, long-lasting movement, and the end fittings are polymer to resist marine environments. A 15 mm end fitting and 6 mm rod diameter round out the hardware sizing.

Inside the cylinder, a unique multi-lobe seal design gives this lift spring a longer service life and more consistent performance than typical single-seal gas struts, which is why Sea-Dog backs it with a 2-year warranty. It is rated for both marine and RV use, and is commonly installed on engine hatches, access hatches, storage lids, tool boxes, canopies, seating, RV doors, furniture, truck caps, and utility boxes.

Specifications

• Brand: Sea-Dog
• Manufacturer Part Number: 321483-1
• Force Rating: 30 pounds
• Extended Length: 20 inches
• Compressed Length: 12 inches
• Stroke Length: 8-1/8 inches
• End Fitting Diameter: 15 mm
• Rod Diameter: 6 mm
• Applications: Marine, RV
• Material: Hard chromium plated shaft, bronze bushings, polymer end fittings
• Weight: 0.438 pounds
• UPC: 035514321938
• Warranty: 2 year
• Quantity: 1 each

Fitment

Universal fit for marine and RV hatches, doors, lids, tool boxes, and utility applications; not vehicle or engine model specific.

Frequently Asked Questions

What is the force rating of the Sea-Dog 321483-1 lift spring? The Sea-Dog 321483-1 is rated at 30 pounds of force, meaning it holds a hatch, lid, or door of that approximate weight open on its own.

What are the extended and compressed lengths of this lift spring? The 321483-1 extends to 20 inches and compresses to 12 inches, giving it a stroke of 8-1/8 inches.

Will the 321483-1 fit a specific boat make or model? This is a universal gas lift spring rated for marine and RV use rather than being matched to a specific boat make or model, so fitment depends on matching the 20 inch extended length and 30 pound force rating to your hatch or door opening.

What is the 321483-1 made of? It uses a hard chromium plated shaft, bronze bushings at the pivot points, and polymer end fittings, a combination chosen for corrosion resistance in marine environments.

How long will this gas spring last before it wears out? Sea-Dog gas filled lift springs use a multi-lobe seal design intended to extend service life beyond typical single-seal gas struts, and the 321483-1 carries a 2-year warranty.

What size end fitting and rod does the 321483-1 use? The 321483-1 has a 15 mm end fitting and a 6 mm rod diameter.

Is the 321483-1 genuine Sea-Dog or an aftermarket part? The 321483-1 is a genuine Sea-Dog Line gas filled lift spring, manufactured to marine OE standards.

What applications is the 321483-1 designed for? Beyond boat hatches, the 321483-1 is suited to engine and access hatches, doors, tool boxes, golf carts, canopies, seating, RV doors, furniture, truck caps, and utility boxes.

How is the 321483-1 different from Sea-Dog's other 20 inch lift springs? The 321483-1 shares its 20 inch extended length and 12 inch compressed length with parts 321482-1, 321484-1, 321486-1, 321488-1, 321489-1, and 321492-1, but each is rated at a different force: 20, 40, 60, 80, 90, and 120 pounds respectively, versus 30 pounds for the 321483-1.

What is included when I order the 321483-1? Each 321483-1 order includes one gas filled lift spring, packaged 1 each.

How much does the 321483-1 weigh? The Sea-Dog 321483-1 gas lift spring weighs 0.438 pounds.