1-Inch Self-Retaining Screw-Type Marine Drain Plug with O-Ring
1-Inch Self-Retaining Screw-Type Marine Drain Plug with O-Ring is backordered and will ship as soon as it is back in stock.
Worry-free returns
Worry-free returns
Shop with confidence. If you’re not completely satisfied, eligible items may be returned within the return window, provided they are unused and in original packaging.
If the return is due to our error or a defective item, we’ll make it right.
Please contact us before returning any item.
Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
International delivery times may vary due to customs processing.
Tracking information will be provided once your order ships.
1-Inch Self-Retaining Screw-Type Marine Drain Plug with O-Ring
1-Inch Self-Retaining Screw-Type Marine Drain Plug with O-Ring is backordered and will ship as soon as it is back in stock.
Product Details
This 1-inch self-retaining screw-type marine drain plug is a single replacement drain plug for marine drainage applications that use a 1-inch hole. Its screw-type design helps secure the plug during use, while the self-retaining construction helps keep the plug attached when opened or removed. The plug is made from polypropylene and includes an O-ring seal.
The drain plug is designed for use in boat transoms, wells, coolers, and tanks. Its vibration-resistant construction is suited to normal marine operating conditions. Always compare the required hole size and installation arrangement with your existing hardware before ordering.
- Fits a 1-inch drain hole.
- Self-retaining screw-type design helps prevent plug loss.
- Polypropylene construction for marine drainage applications.
- Includes an O-ring seal for a secure fit.
- Suitable for transoms, wells, coolers, and tanks.
Application Compatibility
This product is intended for marine drainage locations that require a 1-inch drain plug. It is not an engine-specific component, so model, year, horsepower, stroke, shaft, and serial-number fitment do not apply.
| Application | Use |
|---|---|
| Boat transoms | Drainage applications requiring a 1-inch hole |
| Wells | Drainage applications requiring a 1-inch hole |
| Coolers | Drainage applications requiring a 1-inch hole |
| Tanks | Drainage applications requiring a 1-inch hole |
Technical Specifications
- Product Type
- Self-retaining screw-type marine drain plug
- Required Hole Size
- 1 inch
- Material
- Polypropylene
- Seal
- O-ring included
- Design
- Self-retaining and vibration resistant
- Recommended Applications
- Boat transoms, wells, coolers, and tanks
What’s in the Box
- 1 x Self-retaining screw-type marine drain plug
- 1 x O-ring seal
This is a single drain plug, not a multi-piece kit. Mounting screws, sealant, and additional replacement seals are not specified as included.
Installation Notes
- Confirm that the existing opening is intended for a 1-inch drain plug.
- Remove the old plug and clean the surrounding area before installation.
- Inspect the new plug and O-ring for damage or debris.
- Install the plug according to the drain fitting's design, ensuring that the O-ring is seated correctly.
- Turn the screw-type plug until it is secure. Do not overtighten or damage the polypropylene body or seal.
- Test the installation for leaks before placing the boat, well, cooler, or tank into service.
Troubleshooting & FAQ
Will this drain plug fit my boat?
It is designed for marine drainage applications that use a 1-inch hole, including suitable boat transoms, wells, coolers, and tanks. Measure the opening and compare the existing fitting before ordering; a 1-inch nominal hole alone may not confirm every installation detail.
How does the self-retaining design work?
The design helps keep the drain plug attached to the fitting when the plug is opened or removed, reducing the chance of losing it during drainage.
Is the O-ring included?
Yes. The product includes an O-ring seal. Inspect the O-ring before installation and ensure it is clean and properly seated.
What should I check if the drain plug leaks?
Check that the opening is the correct size, the O-ring is clean and undamaged, and the plug is seated and tightened correctly. Also inspect the fitting and surrounding surface for cracks, wear, or debris.
Is this an OEM drain plug?
This listing is for a replacement marine drain plug. It is not identified as an OEM-branded component.
Does the package include mounting screws?
Mounting screws are not specified as included. Reuse suitable existing hardware only when it is in good condition and appropriate for the installation.
Maintenance & Important Information
- Inspect the plug and O-ring periodically for cracking, deformation, wear, or debris.
- Replace the O-ring or the complete drain plug if the seal no longer prevents leakage.
- Do not force the plug or overtighten it, as this may damage the seal or polypropylene body.
- Confirm the hole size and fitting arrangement before installation.
- Test for leaks before use and after any maintenance.
About Sea Sierra
- Marine Replacement Parts — Practical replacement components for boat maintenance and drainage applications.
- Clear Product Information — Specifications and included components are presented to help you verify compatibility before ordering.
- Marine-Focused Support — We provide parts for common maintenance needs across recreational and utility watercraft.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
