2 Day Shipping


Xtra Seal String Inserts Thin Black (12″) (12-371)

Join CLUB5 at Tire Supply Network and save 5% on EVERY order! Learn more

Thin Black Universal String-Type Inserts

  • Temporary repairs sealing by compression only
  • For use in radial and bias ply tires
  • Excellent for golf carts, lawn mowers, and ATV's
  • Install part #12-370 and part #12-371 using any closed-eye needle (use for insert shown)
  • Install all other string type inserts using any split-eye needle


  • Size: 12" (305mm)
  • Sold as Box Quantity: 50
Compliance and Restrictions
WARNING: Cancer and Reproductive Harm -

                        Overstock Blowout Sale While Supplies Last!

                        We need to make room in our warehouse for some new and exciting products, but first we need to clear out our overstock and discontinued inventory, so we’re passing the savings on to you! Get deep discounts on some special buys, but you need to hurry because once they’re gone…they’re gone forever!

                        Check our Overstock Blowout section regularly as we will be adding new deals frequently!