How does bulk pricing work?

Bulk discounts apply automatically in the cart, per item: 50+ pieces save 10%, 500+ save 20%, 1,000+ save 30%, 2,500+ save 40% and 5,000+ save 50%. Each product page shows the price at every tier.

How fast do orders ship?

Orders usually ship within 24 hours of being placed, by UPS or FedEx with a tracking number, from our warehouse in Elgin, South Carolina.

Rubber Hole Plugs & Stoppers – Plugs for Holes in Pipes, Tubes, Tanks & Panels

(22 products)

22 sizesfrom $0.16ships from Elgin, SCbulk pricing from 50+

Rubber plugs for holes: 22 sizes from $0.16. Push-in hole plugs snap into 1/8" to 1/2" holes in sheet metal and plastic, and the stem grips panels from 1/32" to 3/16" thick, so they seal a hole and work as a low bumper foot at the same time. For pipe ends, drains and tubing, the tapered rubber stoppers have 11/32" to 1/2" stems. Measure the hole, then pick it below.

Pick your plug by hole size

Push-in plugs for a 1/8" hole

5/16" flat head

Push-in plugs for a 3/16" hole

3/8" oval head 1/2" flat head

Push-in plugs for a 7/32" hole

7/8" flat head

Push-in plugs for a 1/4" hole

1/2" oval head 3/8" flat head 1/2" flat head 9/16" flat head 9/16" domed head

Push-in plugs for a 9/32" hole

9/16" flat head 5/8" flat head

Push-in plugs for a 5/16" hole

3/8" domed head 5/8" flat head

Push-in plugs for a 3/8" hole

3/4" flat head

Push-in plugs for a 1/2" hole

1" flat head 1" domed head

Tapered stoppers for pipes and tubing (stem diameter)

11/32" stem 3/8" stem 31/64" stem 1/2" stem

Measuring help: rubber plug size guide · rubber stopper size chart

Rubber hole plugs vs. rubber stoppers: which one you need

Push-in rubber hole plugs close a drilled or punched hole in sheet metal, plastic or wood paneling. The plug has a grooved stem: push it through the hole and the groove locks behind the panel, leaving a smooth rounded or flat head on the front. Measure two things, the hole diameter and the panel thickness, and pick the plug whose listing matches both. They cover unused screw holes in appliance cabinets, electronics enclosures, truck and trailer panels, bed frames and furniture, and the same part works as a low bumper foot.

Line-sealing rubber stoppers are solid tapered plugs for the open end of a pipe, tube, hose or drain. The stem diameter is the smallest end of the taper: choose a stopper whose stem fits inside the opening and push until it seals. They keep dust, water and insects out of stored pipe and tubing, plug drain and fill holes, and mask holes during painting. They are friction-fit seals for low pressure, not pressure-rated test plugs. Every plug here is sold individually with bulk pricing from 50 pieces, and orders usually ship within 24 hours from Elgin, South Carolina.

Rubber plugs for holes, sized from 1/8" to 19/32": measure the hole, find that size in the chart below, and push the plug in by hand. Push-in hole plugs lock into sheet metal and panels; tapered line-seal plugs press into pipes, tubes, drains and drilled holes.

Shop rubber hole plugs and stoppers — solid rubber plug stoppers that seal holes, pipe ends, and openings by simple push-fit compression. Two styles are stocked: solid tapered line-seal plugs (stem diameters 11/32" to 19/32") that press into pipes, drains, and drilled holes for pressure testing, winterizing, and capping lines, and flanged button-style push-in plugs (fitting 1/8" to 1/2" panel holes) whose flat, oval, or domed heads finish the hole flush while doubling as bumper feet.

How to size a rubber plug: measure the hole or pipe inside diameter — a compression plug should be at or slightly above that size so the rubber squeezes in and grips. Full walkthrough in the rubber plug size guide.

Common uses: plumbing pipe stoppers, sealing drilled holes in tanks, sinks, and panels, masking holes for paint and powder coat, capping unused mounting holes in equipment, and silencing rattles in tube ends. Need a lined pass-through for wires instead of a seal? Use a rubber grommet. Closing a large panel hole? See blank/closed grommets up to 3"+. Maintenance teams and plumbers: bulk pricing available.

Rubber plug size chart by hole size

Hole / line size	Plug	Panel thickness
1/8"	Push-in plug 5/16" × 1/8" flat	1/32"
3/16"	Push-in plug 1/2" × 5/32" flat	1/16"
3/16"	Push-in plug 3/8" × 1/8" oval	1/32"
7/32"	Push-in plug 7/8" × 11/64" flat	1/8"
1/4"	Push-in plug 1/2" × 1/4" flat	1/16"
1/4"	Push-in plug 9/16" × 3/8"	3/64"
1/4"	Push-in plug 1/2" × 11/64" oval	3/64"
1/4"	Push-in plug 1/2" × 5/32" flat	1/16"
1/4"	Push-in plug 9/16" × 1/8" flat	1/8"
1/4"	Push-in plug 3/8" × 1/8" flat	1/16"
9/32"	Push-in plug 5/8" × 11/32" flat	1/8"
9/32"	Push-in plug 9/16" × 1/8" flat	5/64"
5/16"	Push-in plug 5/8" × 1/4" flat	3/32"
5/16"	Push-in plug 3/8" × 5/32"	1/16"
11/32"	Tapered line-seal plug, 11/32" stem	—
3/8"	Tapered line-seal plug, 3/8" stem	—
3/8"	Push-in plug 3/4" × 3/4" flat	1/8"
31/64"	Tapered line-seal plug, 31/64" stem	—
1/2"	Push-in plug 1" × 5/16" flat	3/16"
1/2"	Tapered line-seal plug, 1/2" stem	—
1/2"	Push-in plug 1" × 3/16"	1/8"
19/32"	Tapered line-seal plug, 19/32" stem	—

Rubber plugs for holes FAQ

Which rubber plug fits a pipe?
Use a tapered line-sealing stopper plug. Measure the inside diameter of the pipe and choose the stem diameter closest to it (11/32", 3/8", 31/64", 1/2" or 19/32"), so the taper presses in snugly.

Are rubber stoppers sold individually?
Yes. Every plug and stopper is sold individually, so you can order one or mix sizes.

What size rubber plug do I need for my hole?
Measure the inside diameter of the hole or pipe and pick that size in the chart above. Push-in plugs also list the panel thickness their groove grips.

Push-in hole plug or tapered line-seal plug?
Push-in plugs have a flat or oval head that sits on the panel and a groove that locks into thin sheet material. Tapered line-seal plugs are solid stems that press into pipes, tubes, lines and drilled holes.

Do you have a 1/2" or 3/8" rubber plug?
Yes: the 1/2" rubber plug and the 3/8" rubber plug, plus push-in plugs that fit 1/2" and 3/8" holes.

Can rubber plugs be used as feet?
Yes. The push-in plugs double as push-in rubber bumper feet for appliances and equipment.

How fast do rubber plugs ship?
Orders usually ship within 24 hours by UPS or FedEx with tracking from our warehouse in Elgin, South Carolina; orders over $199 ship free to the East & Central US (West Coast, Alaska & Hawaii: free over $399).

Choosing between a push-in plug, a line-sealing plug and a blank grommet? Read rubber plugs for holes and pipes: how to pick the right type and size.

Also searched as: line plugs, drain plugs, bungs.

Sizing help: All guides & size charts

Looking for tapered rubber stoppers only? See the rubber stopper size chart: the five tapered line-seal stoppers from 11/32" to 19/32" stem, with head size and length for each.