Sea-Dog 3214731 Gas Filled Lift Spring
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You have 30 days to request a return. All sale items are final sale.
Sea-Dog 3214731 Gas Filled Lift Spring is a gas-powered support designed to help lift and control hatch and deck plate access panels.
Key Features
- Gas filled lift spring designed for smooth, controlled lift
- Unique multi-lobe seal for superior sealing footprint and tolerance to shaft imperfections, vibration, and temperature variations
- Heavy gauge steel body for durability
- Hard chromium plated shafts for leak-free dynamic sealing
- Bronze bushings and polymer end fittings for long service life
Intended Use
- Marine deck hatches and access ports
- Hatches and deck plates requiring controlled lift support
- Other marine/RV/utility hatch or door applications (where the specified lift spring dimensions/ball/socket fit)
Product Details
- Product: Sea-Dog 3214731 Gas Filled Lift Spring
- SKU/Alt: 354-3214731
- Body: Heavy gauge steel body, heat-cured paint coating
- Shaft: Steel with proprietary hard chromium plating; ground and polished for smooth, non-porous sealing surface
- Seal: Patented multi-lobe seal
- Bushings: Special bronze bearing material
- End fittings: Composite/polymer end fittings (plus bronze bushing components where applicable)
- Type: Gas filled lift spring
- Lift weight / force class: 30 lb (30#)
- Rod (shaft ball size): 6 mm
- Cylinder (bushing) size: 15 mm
- Approx. lengths (as published for 321473-1): Extended 17 in; compressed 11 in; stroke 6 in
- Spring lift applications: Uses include deck hardware such as hatches/doors (application depends on your hatch hardware layout and linkage)
- Weight (from listing): 171 g
Parts Desk Insights
Best Use Case: Use this gas-filled lift spring when you need dependable support for marine deck hatches/access panels—especially to help reduce slamming and maintain consistent open/close feel.
Common Issues: If the lift doesn’t feel right, verify you matched the correct spring force/lift class (30 lb) and confirm the mating end/ball and bushing sizes. Also check the hatch alignment and any related seals or mounting hardware for proper seating, since gas springs rely on correct geometry for smooth travel.
Related Products & Accessories
- Sea-Dog Gas Filled Lift Spring (related size/class) - Browse the Marine Deck Hatches & Access Ports category for other Sea-Dog gas spring sizes that match your hatch weight and travel.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.