Red T-Handle Expandable Rubber Pipe Plug for Drain Openings
STANDARD PRODUCT SUMMARY
Details used for quotation
- Product reference
- Page reference
- Catalog group
- Repair Tools
- Specification status
- Confirm before quotation
- Material
- Confirm from the selected variant or drawing
- Sizes / variants
- Confirm dimensions and option required
- Intended application
- Confirm vehicle, equipment or repair process
- MOQ
- Depends on model and supplier
- Sample
- Confirm availability and cost
- Packaging
- Standard or buyer-specified
- Customization
- Feasibility review required
- Lead time
- Confirm with the final specification
Catalog information is a sourcing reference. Critical dimensions, materials, application, test requirements and commercial terms are confirmed for the selected product before an order is placed.

This red T-handle expandable rubber pipe plug is designed to close a correctly sized pipe or drain opening temporarily. The pictured style is also listed as a marine deck-drain accessory. The images throughout this guide show its construction, how the black rubber body expands and how it is positioned at an opening.
For distributors and repair-tool buyers, the key choice is the measured inside diameter of the opening. The supplied size chart contains 11 numbered options with stated ranges from 27–33 mm through 165–180 mm. The ranges are not continuous across every diameter between 27 and 180 mm, so choose by the individual row below.
Red T-Handle Pipe Plug Features
- Adjustable mechanical seal: The T-handle turns the central fastener to compress and expand the rubber body.
- Eleven size choices: Select the specific range that contains your measured pipe or drain opening.
- Visible before-and-after profile: The supplied photos show how the rubber changes shape when compressed.
- Marine sourcing reference: This style is also listed for vessel deck-drain openings. Confirm the actual opening and service conditions before selecting a plug.
- Straightforward sourcing: Quote requests can identify a numbered size, opening diameter and quantity rather than relying on a generic “universal” description.
The next photo compares the plug before and after the T-handle is tightened. As the rubber body is compressed lengthwise, it bulges outward to contact the inside of the opening. The image explains the mechanism; it does not establish a pressure rating or guarantee a seal for every pipe surface.

Expandable Rubber Pipe Plug Size Chart
Measurements below are transcribed from the supplied product size chart. All dimensions are in millimetres (mm).
| Size | Applicable opening diameter | T-handle length | Bottom diameter | Rubber height | Overall height |
|---|---|---|---|---|---|
| 1# | 27–33 | 35 | 27 | 55 | 145 |
| 2# | 33–38 | 40 | 33 | 55 | 145 |
| 3# | 38–45 | 47 | 38 | 55 | 145 |
| 4# | 45–55 | 65 | 45 | 55 | 145 |
| 5# | 52–65 | 75 | 52 | 55 | 145 |
| 6# | 65–80 | 85 | 65 | 65 | 160 |
| 7# | 85–100 | 110 | 85 | 65 | 160 |
| 8# | 90–105 | 115 | 90 | 65 | 160 |
| 9# | 110–125 | 135 | 110 | 65 | 160 |
| 10# | 135–150 | 160 | 135 | 65 | 160 |
| 11# | 165–180 | 200 | 165 | 65 | 160 |
The source chart says these dimensions were measured manually and may differ slightly from the actual product. Confirm critical dimensions with a current sample before ordering.
The illustrated dimension guide identifies the T-handle length, bottom diameter, rubber height and overall height used in the table. Compare those measurements as well as the opening range, especially when clearance or insertion depth is limited.

Marine Deck-Drain Model References
A marine-supply listing labels the pictured style “IMPA 232481” and shows the following seller options. Their stated opening ranges do not match the 11 numbered sizes above one to one. These are inquiry references, not verified cross-references or a claim of marine approval.
| Marine listing reference | Stated opening range |
|---|---|
| 232481 | 46–65 mm |
| 232482 | 52–75 mm |
| 232483 | 65–85 mm |
| 232484 | 85–105 mm |
| 232485 | 90–110 mm |
| 232486 | 110–130 mm |
| 232487 | 135–160 mm |
| 232488 | 165–200 mm |
If you are sourcing a marine deck-drain plug, send the reference number if available, the drain’s measured inside diameter, a photo or drawing, and the intended service conditions. We can then confirm the appropriate size and current quotation.
How the T-Handle Expansion Plug Works
Measure the inside diameter of the opening, then select a size whose applicable opening diameter includes that measurement. Check the bottom diameter and available insertion depth as well. Insert the uncompressed plug, turn the T-handle until the rubber contacts the inner wall, and confirm the seal under the conditions of the intended application. Release the handle before removal.
The image below illustrates a plug positioned at a pipe opening. Its small insets show the uncompressed and expanded shapes. It is an application illustration, so the actual plug size still needs to be selected from the measured opening.

This catalog does not specify a pressure rating, temperature range, fluid compatibility or marine approval. If your application involves a vessel, radiator, coolant system or pressure test, provide the operating conditions and ask us to confirm suitability before use.
Frequently Asked Questions
Which size should I order for a 50 mm opening?
The supplied chart lists 4# (45–55 mm) as the applicable range. Confirm the opening’s actual inside diameter and any insertion-depth constraints before placing an order.
Is one plug adjustable across the whole 27–180 mm range?
No. The range is divided into 11 numbered plug sizes, and there are gaps between some stated ranges. Select the individual size that covers your opening.
Can this plug be used for radiator pressure testing?
The supplied material shows a pipe or drain opening plug but gives no pressure, temperature or coolant-compatibility rating. Share your test conditions so the appropriate product can be confirmed.
Do the marine reference numbers identify the exact sizes in this chart?
No confirmed mapping is available. The 232481–232488 option ranges differ from the 11-size chart. Include both the reference number and your measured opening diameter so we can check the match.
Request a Quote for Red T-Handle Pipe Plugs
For a product catalog or wholesale inquiry, send the size number or marine reference code, measured opening diameter, required quantity, destination and intended use. If you need a technical rating or specific packaging, include that requirement in your message. Request a quote through our inquiry form.