Yes, these boat seat pedestal plugs and adapters are designed to seal or adapt pedestal openings on boat decks. This guide highlights five reliable options for keeping water, dirt, and debris out, while also accommodating common pedestal bases and post pins. The top picks are suited for boaters who want a quick, secure seal when pedestals are not in use, or an exact fit for upgraded seating systems. Below is a quick summary table of the selected products to help you compare at a glance.
| Product | Best For | Key Benefit |
|---|---|---|
| Bob’s Machine 311-000002BK Deckplugs Pedestal Seat Plug – 0.75″, Black | Small pedestal holes | Water-tight seal when unused |
| T-H Marine Pedestal Base Plug | 1.75–1.77 in pedestal openings | Prevents water intrusion with slide-pin removal |
| BG Parus 2 3/8 Inch End Cap | 2 3/8″ holes and 54–58 mm diameters | Flexible ribs for secure fit |
| Bob’s Machine 311-000001BK Deckplugs Pedestal Seat Plug – 1.77″, Black | Medium pedestal openings | Similar water-tight seal as 0.75″ version |
| Txdiyifu SP-14000 Pedestal Bushing Adaptor | Attwood Swivl-Eze SP-14000 bases | Precise fit for 1.77″ base and 3/4″ pin |
Bob’s Machine 311-000002BK Deckplugs Pedestal Seat Plug
Best for small pedestal holes, this 0.75″ black plug closes deck openings quickly when pedestals are not in use. It helps keep compartments dry and prevents loss of baits or hooks through the holes. Suitable for boaters who want a simple, affordable seal for occasional pedestal use. Limitation: may not fit larger pedestal openings without a different size plug.
T-H Marine Pedestal Base Plug
Best for pedestal base openings of 1.75–1.77 inches, this plug blocks water, dirt, and debris from entering the base. It features a slide-pin removal for easy installation and removal. Choose this if you want a secure, low-maintenance seal and you have the correct opening size. Caution: measure the base opening, not the outer base, to ensure fit.
BG Parus 2 3/8 Inch End Cap
Best for holes sized around 2 3/8 inches, this end cap is designed to fit a range of diameters (2.13″–2.28″). It uses multiple flexible ribs to secure the cap in place. This option is ideal when you need a robust external cap for larger openings. Limitation: it is a generic cap, so verify exact hole dimensions before purchasing.
Bob’s Machine 311-000001BK Deckplugs Pedestal Seat Plug
Best for mid-size openings around 1.77 inches, this plug provides a similar water-tight seal as the smaller version. It is well-suited for boats with standard pedestal bases. Limitation: designed for specific opening dimensions; ensure your hole matches the 1.77″ size.
Txdiyifu SP-14000 Pedestal Bushing Adaptor
Best for Attwood Swivl-Eze SP-14000 pedestals, this adaptor ensures a precise fit with 1.77″ bases and a 3/4″ pin. It improves alignment and reduces looseness, making it ideal for compatible marine seating systems. Limitation: only compatible with specific pedestal models; confirm compatibility with your seat post and base.
Buying Guide
What size is your pedestal base opening? Measure the diameter of the seat pedestal hole or base opening, not the surrounding deck edge. Choose a plug or adaptor that explicitly matches that measurement to ensure a snug seal and to prevent water ingress.
Which installation method do you prefer? Some plugs use simple push-in fits, while others rely on slide pins or locking mechanisms. Consider ease of installation and removal for quick deck access and reliable security during sailing or rough seas.
Are you upgrading or standardizing seating systems? If you own an Attwood Swivl-Eze SP-14000, select a matching SP-14000 adaptor to maintain proper alignment and stability of the seat post.
Material and durability matter. Look for plugs and adaptors made from marine-grade plastics or corrosion-resistant metals, especially in saltwater environments where exposure to moisture and salt can affect longevity.
What are your space and aesthetic needs? Small plugs (like 0.75″) can be discreet for cramped decks, while larger end caps or adaptors provide stronger protection for mid-sized openings and ensure a clean, finished look.
FAQ
- What is a boat seat pedestal plug used for?
It seals unused pedestal openings to prevent water intrusion, debris entry, and loss of small items through the deck.
- How do I know which plug fits my pedestal base?
Measure the base opening diameter and compare with product specifications. Choose a plug that matches that size exactly.
- Can I mix and match pedestal plugs with different brands?
Yes, as long as the opening size matches. Adapters may be needed for compatibility with specific pedestal systems.
- Are these plugs suitable for saltwater boats?
Most plugs are designed for marine use, but check material durability and corrosion resistance for saltwater exposure.
- Do some plugs require tools for installation?
Some use slide pins or locking mechanisms that are tool-free, while others may require basic hand tightening.