Sea-Dog 3214831 Gas Filled Lift Spring
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Help keep hatch and deck access doors open with a Sea-Dog® gas filled lift spring featuring a unique multi-lobe seal for reliable lift support in marine and utility applications.
Key Features
- Unique multi-lobe seal design for improved service life and performance
- Gas filled lift spring for smooth, controlled hatch/door support
- Heavy gauge steel construction with hard chromium plated shafts
- Bronze bushings and polymer end fittings for durable operation
Intended Use
- Marine deck hatch and access port support (gas spring assisted lids)
- Cabinet and hatch hardware applications where a gas filled lift spring is used
- RV, truck cap, tool box, and utility hatch/door lift support applications
Product Details
- Brand: Sea-Dog®
- Product: Gas Filled Lift Spring
- Part / SKU: 354-3214831
- Style: Gas filled lift spring with unique multi-lobe seal
- Construction (per product description): Heavy gauge steel body; hard chromium plated shafts; bronze bushings; polymer end fittings
- Standard lift-force family (Sea-Dog gas filled lift spring group reference): 30 lb class for the 321483-1 listing under Sea-Dog’s gas filled lift spring group
- Item weight (variant data): 199 g
Parts Desk Insights
Best Use Case: Use this gas filled lift spring as the supporting “assist” component for a marine hatch or deck access port where controlled opening/closing helps reduce strain on hinges and access hardware.
Common Issues: If lift feel is weak or inconsistent after installation, confirm the correct spring selection for your hatch weight and travel, and verify the mount/end-fitting orientation matches the mating hardware and the hatch’s designed stroke.
Related Products & Accessories
- Browse Marine Deck Hatches & Access Ports - Pair this lift spring with the matching hatch/deck plate hardware and any required mounting hardware.
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.