Firewall
Rubber Hole Plugs Thick
Panel Plugs
10
Sizes from 7/8" to 2 1/2"
Vintage
Auto, Automotive, Motorcycle, Trucking, Marine
One of
our top selling items
The plug size is the size of the hole diameter it snugly inserts into.
The
top pad will be slightly larger for a more secure fit.
These
hole plugs are attached without need for screws or other fasteners.
Plug
is simply inserted into an appropriately sized hole.
Stem
bumpers are typically used as hole plugs or bumpers
for
vibration and noise reduction.
Firewall
Rubber Hole Plugs Thick
Panel Plugs
10
Sizes from 7/8" to 2 1/2"
Vintage
Auto, Automotive, Motorcycle, Trucking, Marine
One of
our top selling items
The plug size is the size of the hole diameter it snugly inserts into.
The
top pad will be slightly larger for a more secure fit.
These
hole plugs are attached without need for screws or other fasteners.
Plug
is simply inserted into an appropriately sized hole.
Stem
bumpers are typically used as hole plugs or bumpers
for
vibration and noise reduction.
Panel Sealing for Automotive, Marine, Motorcycle, Trucking, DIY
Indoor/Outdoor Use – Temp Range ‑40 to 200C – Durometer 50-55A
Noise & Vibration Reduction
Hole Size
Top Diameter
Flange Thickness
Length of Stem
7/8”
1 1/8”
1/8”
.350
15/16”
1.200
1/8”
.350
1”
1.200
1/8”
.350
1 1/8”
1 3/8”
1/8”
3/8”
1 1/4"
1 1/2"
1/8”
3/8”
1 3/8”
1 11/16”
1/8”
3/8”
1 1/2"
1 3/4"
1/8”
3/8”
1 7/8”
2 1/8”
.140
1/2"
2”
2 1/4”
.140
1/2"
2 1/2”
2 3/4"
.155
.600
✅ Stocked in California
warehouse • 5th year on eBay with 99.9% rating from 51,000+ reviews
Package Quantity & Size options
Please
use the drop-down box for needed products
10% Discount on 2 or more packs
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Product Specs
Item Thickness: Various Shape: Round MPN: NA Item Length: NA Gauge: NA Screw Size: NA Unit Type: Unit Drive Style: Hand Mandrel Material: NA Grip Range: Various Number in Pack: Various pack sizes available Unit Quantity: 1
Used to seal panel openings, reduce vibration, and provide noise dampening in automotive, motorcycle, marine, trucking, powersports, and general industrial applications. Commonly used as rubber hole plugs, blind hole plugs, firewall plugs, and push-in stem bumpers for fabrication and electrical panel sealing. Made from high density rubber or high temperature silicone with a compression-fit stem that installs securely without screws or fasteners. The material provides resistance to weather, chemicals, and abrasion while maintaining flexibility across a wide temperature range. Installs by hand into a matching hole diameter and offers long lasting performance in indoor and outdoor environments. Multiple head sizes, stem diameters, and pack quantities are available.