Sea-Dog Deck Fill Key – Formed 304 Stainless Steel, Cast Cap Fit
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Sea-Dog Deck Fill Key – Formed 304 Stainless Steel, Cast Cap Fit
A dedicated deck fill key formed from 304 stainless steel and designed to fit Sea-Dog cast stainless deck fill caps precisely. Where a universal key offers broad compatibility, this key is purpose-matched to the cast stainless Sea-Dog fill hardware family — delivering a clean, secure fit without the play or rounding risk that can come from using an ill-fitting tool on a quality fitting.
- Dedicated fit for Sea-Dog cast stainless deck fill caps — purpose-matched for a secure, damage-free engagement
- Formed 304 stainless steel — corrosion-resistant and built to handle the torque needed to open stiff or weathered caps
- Single-function design — optimized for deck fill access; no extra bulk from multi-tool features
- Compact and lightweight — easy to stow in a cockpit locker, tool bag, or alongside the fill hardware itself
Parts Desk Insights
Best use case: This is the correct key to specify when a customer is purchasing or already owns Sea-Dog cast stainless deck fills and wants the matched tool. The formed stainless construction engages the cap slots cleanly, which matters on cast fittings where a loose-fitting key can round out the drive recess over time. It's the right choice for a permanent onboard spare kept near the fill hardware rather than a general-purpose tool kit item.
Pair with Sea-Dog deck fills and plates: Sea-Dog Locking Deck Fill – Diesel — or browse Sea-Dog screw-out deck plates: 4" Black, 4" White, 6" White, 6" Black. For a multi-tool key that also opens most other fill cap styles, see the Sea-Dog Universal Deck Fill Key & Multi-Tool – 304 Stainless Steel. For larger deck plates up to 6", the Sea-Dog Adjustable Bronze Deck Plate Key offers an adjustable-fit alternative. Also see the Cast Stainless Deck Plate Key for another dedicated stainless option.
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.