Radial Quilled Patch/Plug Unit 42x73 mm/8 mm - 3-13-375
- Patch with plug. For tire repairs. With metal covered plug.
Xtra Seal Mushroom Repair Plug for Radial Tires – 8 mm Stem, 42×73 mm Patch
Tire repair plug | Mushroom type, rectangular radial patch 42×73 mm | Brand: Xtra Seal | Sold per piece
In this version, the 8 mm stem is paired with an elongated patch measuring 42×73 mm, made specifically for radial-construction tires. The rectangular patch shape follows the direction of the reinforcing cords in a radial tire, spreading stress over a larger area than the round patch used in universal versions. This plug is meant for tube-type and tubeless tires and is designed for cold vulcanization only.
Product Description – Mushroom Plug 3-13-375
The plug is made from black rubber coated with an active vulcanizing rubber layer on the stem and on the underside of the patch. Once vulcanizing cement is applied and the plug is installed, this layer reacts chemically, bonding the plug, the cement, and the tire's inner surface into one repair. After installation, the excess stem is trimmed flush with the tread.
Features and Specifications
The stem seals the puncture channel while the patch protects the tire from the inside.
Rectangular shape matched to the cord layout of a radial tire.
For repairing punctures with a matching channel width.
For tube-type and tubeless tires of radial construction.
Coats the stem and patch underside, bonding chemically with the cement.
Installed with Xtra Seal vulcanizing cement, no press or heat required.
Technical Data
| Parameter | Value |
|---|---|
| Part number | 3-13-375 |
| Brand | Xtra Seal USA |
| Product type | Mushroom repair plug with radial patch |
| Stem diameter | 8 mm |
| Patch dimensions | 42×73 mm |
| Application | Radial tires (tube-type and tubeless) |
| Vulcanization method | Cold (chemical) |
| Sold as | 1 piece |
Applications
Where this plug is used
- Repairing punctures in radial-construction tires
- Passenger car tires
- Truck tires
- Tube-type and tubeless tires
- Professional tire shops working with cold vulcanization
Frequently Asked Questions
How is this plug different from the universal mushroom plugs for radial and bias-ply tires?
The universal versions have a round Ø55 mm head and fit both radial and bias-ply tires. The 3-13-375 instead has a rectangular 42×73 mm patch, made specifically for radial tire construction — it should not be used in bias-ply tires.
Why is the patch rectangular instead of round?
The patch shape follows the cord layout of a radial tire, where the cords run radially. The elongated 42×73 mm patch spreads stress along this layout more evenly than a round head, which is why it's dedicated to radial tires only.
Which cements should be used with the 3-13-375?
The manufacturer recommends Xtra Seal Standard cement or Super-Blu. Cement is applied to the plug stem and to the tire's inner surface around the puncture channel, then left to dry before installation.
Who is this product for?
It's intended for tire repair shops and service centers that carry out cold vulcanization repairs with vulcanizing cement, without using a heat press.