Line Sealing Rubber Stopper Hole Plugs - 31/64" Stem Diameter
Price per piece by quantity
- 1–49 pcs$0.78
- 50+ pcs$0.70
- 500+ pcs$0.62
- 1,000+ pcs$0.55
- 2,500+ pcs$0.47
- 5,000+ pcs$0.39
Bulk Discounts
| Quantity | Discounted price |
|---|---|
| Buy 1 – 49 pcs | $0.78 /each |
| Buy 50 – 499 pcs | $0.70 /each |
| Buy 500 – 999 pcs | $0.62 /each |
| Buy 1000 – 2499 pcs | $0.55 /each |
| Buy 2500 – 4999 pcs | $0.47 /each |
| Buy 5000 + pcs | $0.39 /each |
Need 5,000+ pieces or a recurring order? Request a bulk quote
Line Sealing Rubber Stopper Hole Plugs - 31/64" Stem Diameter is backordered and will ship as soon as it is back in stock.
Sizing help: All 4 sizes in this range Shop all Rubber Hole Plugs & Stoppers
Couldn't load pickup availability
- Usually ships within 24 hours from Elgin, SC (shipping policy)
- UPS or FedEx with a tracking number on every order
- Returns accepted up to 30 days after delivery (return policy)
- Bulk discounts by quantity, quotes for large orders (request a quote)
- Material
- Rubber
Need more than one size?
Most of our multi-item orders mix sizes of the same part. Nearby sizes:
Quantities start at the $20.00-per-item minimum.
Description
Description
Line Sealing Rubber Stopper Plug - 31/64" Stem Diameter
Tapered push-fit rubber plug that seals a 31/64" hole, tube, or line airtight. Press it in by hand and the solid rubber stem compresses against the opening and holds by friction - no threads, no adhesive, no tools.
Specifications
- Stem Diameter: 31/64"
- Stem Length: 11/16"
- Head Diameter: 37/64"
- Head Thickness: 3/16"
- Overall Length: 31/32"
- Material: Solid rubber, black
- Sold individually
Applications
HVAC components, chemical and fuel line sealing, kayak, pedal boat and fishing boat drain plugs, capping open tube and pipe ends, pressure testing, winterizing, masking holes for painting or powder coating, and sealing unused holes in tanks, sinks, and panels.
Sizing
Measure the inside diameter of the hole or line - the 31/64" stem fits a 31/64" opening snugly. Other stem diameters from 11/32" up are available in our rubber hole plugs and stoppers collection.
Why Buy From Rubberfeetwarehouse
Ships fast from our South Carolina warehouse. Bulk quantities available - contact us for pricing.
How to Size a Line Plug
How to Size a Line Plug
Match the stem diameter to the inside diameter of the line, tube, or hole being sealed. The tapered ribs compress for a leak-resistant fit. For fuel or chemical service, contact us to confirm material compatibility.
Delivery and Shipping
Delivery and Shipping
Usually ships within 24 hours from our South Carolina warehouse. All orders include tracking.
Line Sealing Rubber Stopper Hole Plugs - 31/64" Stem Diameter
$0.78 each
Line Plug Specifications
| Length | 31/32" (24.61 mm) |
|---|---|
| Thickness | 3/16" (4.76 mm) |
| Stem Diameter | 31/64" (12.3 mm) |
| Shape | Round (tapered) |
| Material | Rubber |
| Finish / Color | Black |
| Pack Quantity | 1 |
| Fits | 31/64" inside-diameter holes, tubes, and lines |
| Applications | HVAC, chemical tubing, fuel lines, boat drain plugs, pipe capping, pressure testing, winterizing, hole masking |
| SKU | RLP001116316431622 |
Stem diameter = the hole or line ID being sealed.
Size & fit guide
Fits
- 31/64" inside-diameter holes, tubes, and lines
Used for
- HVAC
- chemical tubing
- fuel lines
- boat drain plugs
- pipe capping
- pressure testing
- winterizing
- hole masking
Fraction ↔ Decimal ↔ Millimeter Converter
Type a measurement in any format — fraction (3/8), decimal inches (0.375), or millimeters (9.5mm) — and get all three, plus the nearest standard hardware fraction.
Frequently Asked Questions
How do I size a line plug?
Match the stem diameter to the inside diameter of the line, tube, or hole being sealed. The tapered ribs compress for a leak-resistant fit.
Are these fuel safe?
They handle water and general shop fluids well. For continuous fuel or chemical service, contact us to confirm material compatibility first.
Are they reusable?
Yes - pull them out and reuse. The ribs keep sealing through many insert/remove cycles.
We Accept
