XTRA SEAL X13621 Lead Wire Insert, 3/16" (4.5mm) Injury Repair, Box of 20

Q: How does this compare to a standard string plug repair? A: Lead wire inserts vulcanize completely with the tire rubber to create a permanent molecular bond that lasts the life of the tire. String plugs are considered temporary fixes that can shrink, dry out, or work loose under heat and road stress. Professional shops prefer vulcanizing inserts for liability reasons and long-term reliability.

Q: How does this compare to a standard string plug repair? Lead wire inserts vulcanize completely with the tire rubber to create a permanent molecular bond that lasts the life of the tire. String plugs are considered temporary fixes that can shrink, dry out, or work loose under heat and road stress. Professional shops prefer vulcanizing inserts for liability reasons and long-term reliability.

Q: Will these inserts work on both radial and bias-ply tires? A: Yes, the X13621 is specifically engineered for both radial and bias-ply tire constructions. The rubber compound formulation bonds effectively with either tire type when proper vulcanizing cement is applied during installation. This versatility makes them suitable for passenger cars, light trucks, motorcycles, and older vehicles with bias-ply tires.

Q: Will these inserts work on both radial and bias-ply tires? Yes, the X13621 is specifically engineered for both radial and bias-ply tire constructions. The rubber compound formulation bonds effectively with either tire type when proper vulcanizing cement is applied during installation. This versatility makes them suitable for passenger cars, light trucks, motorcycles, and older vehicles with bias-ply tires.

Q: What size punctures can this insert repair? A: These inserts are designed to handle tire injuries up to 3/16 inch or 4.5 mm in diameter, which covers the majority of common punctures from nails, screws, and road debris encountered in everyday driving. Injuries larger than this specification typically require patch-plug combination repairs or professional tire replacement evaluation.

Q: What size punctures can this insert repair? These inserts are designed to handle tire injuries up to 3/16 inch or 4.5 mm in diameter, which covers the majority of common punctures from nails, screws, and road debris encountered in everyday driving. Injuries larger than this specification typically require patch-plug combination repairs or professional tire replacement evaluation.

Q: Do I need special tools to install these lead wire inserts? A: You need standard tire repair tools that most shops already have including a carbide reamer to prepare the injury channel, an insertion tool that grips the lead wire, and vulcanizing cement to create the chemical bond. The lead wire guide is compatible with common tire repair insertion tools, so no proprietary equipment is required.

Q: Do I need special tools to install these lead wire inserts? You need standard tire repair tools that most shops already have including a carbide reamer to prepare the injury channel, an insertion tool that grips the lead wire, and vulcanizing cement to create the chemical bond. The lead wire guide is compatible with common tire repair insertion tools, so no proprietary equipment is required.

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XTRA SEAL lead wire tire repair inserts with brown rubber body in box of 20 units

XTRA SEAL Lead Wire Insert - Professional Tire Puncture Repair (X13621, Box of 20)

Vulcanizing Rubber Insert for 3/16" (4.5mm) Injuries

The XTRA SEAL X13621 is a lead wire insert designed for professional tire repair shops and mobile technicians who need reliable fixes for 3/16" (4.5mm) punctures. Each box contains 20 vulcanizing rubber inserts with integrated lead wire guides that ensure accurate placement in both radial and bias-ply tires. Unlike temporary string plugs, these inserts bond fully during vulcanization to deliver repairs that hold under pressure and road flex.

Why Techs Choose Lead Wire Inserts

Guided Installation Eliminates Guesswork - The integrated lead wire provides precise control during insertion, allowing you to position the insert exactly where needed. Feeds smoothly through standard tire repair tools.

Permanent Bond That Won't Back Out - The rubber body vulcanizes completely with proper repair cement, creating a molecular bond that resists separation under load and temperature extremes. No callbacks for leaking repairs.

Handles Common Road Hazards - Optimized for the 3/16" (4.5mm) injury size that covers most nail, screw, and wire punctures in daily shop operations.

Best Applications for Lead Wire Inserts

Automotive repair shops performing daily tire service.
Fleet maintenance facilities managing high-volume tire repairs.
Mobile tire repair operations requiring reliable field repairs.
DIY mechanics with proper tire patching equipment and vulcanizing cement.
Motorcycle and ATV tire repairs within the 3/16" injury range.

Technical Specifications

XTRA SEAL X13621 Product Details
Specification	Details
Brand	XTRA SEAL
Model Number	X13621 (also listed as 13-621)
Injury Size Compatibility	Up to 3/16 in (4.5 mm)
Application	Radial and Bias-Ply Tires
Quantity	Box of 20 inserts
Insert Type	Vulcanizing rubber with lead wire guide

Installation Requirements

For proper installation, use these inserts with standard tire repair tools (reamer, insertion tool), tire repair cement, and a clean work surface. The lead wire guide pulls the insert into position, then gets trimmed flush after installation.

Stock Your Shop with Reliable Tire Repair Inserts

The XTRA SEAL X13621 delivers professional-grade performance for permanent tire puncture repairs across vehicle types.

Add to cart now and keep 20 quality lead wire inserts on hand for your next repair.

Frequently Asked Questions

How does this compare to a standard string plug repair?

Lead wire inserts vulcanize completely with the tire rubber to create a permanent molecular bond that lasts the life of the tire. String plugs are considered temporary fixes that can shrink, dry out, or work loose under heat and road stress. Professional shops prefer vulcanizing inserts for liability reasons and long-term reliability.

Will these inserts work on both radial and bias-ply tires?

Yes, the X13621 is specifically engineered for both radial and bias-ply tire constructions. The rubber compound formulation bonds effectively with either tire type when proper vulcanizing cement is applied during installation. This versatility makes them suitable for passenger cars, light trucks, motorcycles, and older vehicles with bias-ply tires.

What size punctures can this insert repair?

These inserts are designed to handle tire injuries up to 3/16 inch or 4.5 mm in diameter, which covers the majority of common punctures from nails, screws, and road debris encountered in everyday driving. Injuries larger than this specification typically require patch-plug combination repairs or professional tire replacement evaluation.

Do I need special tools to install these lead wire inserts?

You need standard tire repair tools that most shops already have including a carbide reamer to prepare the injury channel, an insertion tool that grips the lead wire, and vulcanizing cement to create the chemical bond. The lead wire guide is compatible with common tire repair insertion tools, so no proprietary equipment is required.

About the Brand

Xtra Seal

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