Xtra Seal

About Xtra Seal & 31 Incorporated

Xtra Seal is the flagship brand of 31 Incorporated, a company with roots stretching back to 1961 when founder Bob Cornell launched what would become one of North America's most respected names in professional tire repair. Headquartered in Newcomerstown, Ohio, 31 Inc. has grown from a small regional operation into a leading manufacturer of tire repair materials, TPMS supplies, and tire service accessories — all produced under rigorous quality standards certified to ISO 9001:2015.

The Xtra Seal name is synonymous with reliability in tire service bays, fleet shops, and agricultural operations alike. 31 Incorporated manufactures its products across primary facilities in rural Ohio and a secondary operation in Shangyu, China, allowing the brand to maintain both domestic craftsmanship and broad global supply. From raw material sourcing through finished goods inspection, every step of the process is governed by documented quality controls — a commitment that has earned Xtra Seal the trust of automotive aftermarket professionals for decades.

What Xtra Seal Makes

Xtra Seal's product lineup is purpose-built for the tire service professional. The brand's tire repair patches are among its most recognized offerings, spanning everything from standard passenger car patches to heavy-duty agricultural cross-bias repair units — each engineered to vulcanize reliably whether using chemical or low-temperature curing systems. For technicians who prefer a combined approach, Xtra Seal's combination patch-plug units deliver a one-step repair solution trusted in high-volume service environments.

Alongside patches, Xtra Seal offers a comprehensive range of tire repair tools including reamer and insertion tool kits with metal handles, designed for durability through repeated use. These tools pair naturally with the brand's tire repair plugs — string-type and wedge-style rubber vulcanizing inserts that deliver a fast, reliable seal in tubeless tires.

Rounding out the lineup, Xtra Seal's air tool couplers and air tool supplies support the full range of pneumatic equipment found in any professional tire shop, making Xtra Seal a true one-stop source for the tire service bay.

Why Professionals Choose Xtra Seal

• ISO 9001:2015 certified quality management from raw materials to finished product
• Decades of proven performance across passenger, commercial, and agricultural tire applications
• A comprehensive product ecosystem covering patches, plugs, tools, and shop supplies
• Consistent availability through professional automotive and tire supply distributors
• USA-based manufacturing backed by domestic engineering and quality oversight