Cross-Ply Patch BN9 (4ply) 220 mm - 2-11-495
- Patch for tire repairs. 22cm. 4ply. For agricultural vehicles. Bias ply.
Bias Tire Patch EURO BN9 220 mm (4-Ply) – Xtra Seal
Diagonal tire repair insert | Type BN9, 4-ply cord | Brand: Xtra Seal | Sold as: 1 pc.
The EURO bias tire patch BN9 220 mm from Xtra Seal is a 4-ply repair insert built exclusively for bias-ply tires — both tube-type and tubeless. Like the step from the 2-ply to the 3-ply series (BN7), the BN9 represents a qualitative change over the BN8: it is notably larger (220 mm versus 190 mm) and adds a fourth cord layer, increasing the insert's resistance to stress at the repair site. It is built for the most demanding bias-ply tire repairs — large truck, agricultural, and industrial tires with extensive damage. It can also serve as a valve housing for truck and agricultural inner tubes. The slit mylar backing is peeled off right before mounting. It works with cold and hot vulcanization.
Product Overview – Bias Tire Patch EURO BN9 220 mm 11-495
The patch consists of black rubber over a blue tie gum, which creates a durable bond with the inner liner surface once cured. Four layers of crosswise bias cord (4-ply designation) represent the highest level of reinforcement in the BN series — the cord runs crosswise in a pattern matching the bias tire's structure, and the fourth layer raises resistance to forces acting at the repair site under very heavy load. Thin, even edges lower the risk of the patch lifting at the edges.
Like the other patches in the BN line, the BN9 can serve as a valve housing for truck and agricultural inner tubes — useful when the original valve housing is damaged. The slit mylar backing is peeled off right before the patch is applied to the prepared, cement-coated inner surface.
Features and Specifications
Four layers of crosswise cord — higher stress resistance than the 3-ply BN variants.
Notably wider than the BN8 (190 mm) — for extensive damage in large industrial tires.
Works with both tube-type and tubeless bias tires.
Creates a durable, sealed bond between the patch and the tire inner surface.
Protects the patch base from contamination and peels off easily right before mounting.
Can also serve as a tube valve housing for truck and agricultural inner tubes.
Technical Specifications
| Parameter | Value |
|---|---|
| Part number | 11-495 |
| Brand | Xtra Seal USA |
| Product type | Bias EURO tire patch |
| Designation | BN9 |
| Diameter | 220 mm |
| Cord layers | 4 (bias/diagonal) |
| Material | Black rubber over blue tie gum |
| Protective layer | Slit mylar |
| Primary use | Bias-ply tire repair (tube-type and tubeless) |
| Secondary use | Tube valve housing for truck and agricultural tubes |
| Cure methods | Cold, hot |
| Sold as | 1 piece |
Applications
Where This Patch Is Used
- Repair of extensive damage in large bias-ply truck tires
- Repair of bias-ply tires on agricultural and construction equipment with major damage
- Repairs requiring 4-ply cord reinforcement and broad coverage
- Tube valve housing for truck or agricultural inner tubes
- Professional tire repair shops and vulcanizing workshops
Frequently Asked Questions
How does the BN9 differ from the BN8?
The BN8 (11-494) has a 190 mm diameter and three cord layers; the BN9 (11-495) has 220 mm and four cord layers. This is a qualitative step up, not just a size increase: the additional cord layer increases the insert's stress resistance, making the BN9 the right choice for the most demanding industrial tire repairs or damage that extends through deeper layers of the tire casing.
Can BN9 bias patches be used on radial tires?
No — the bias cord insert is built for bias-ply tires only. The crosswise cord arrangement matches the structure of a bias tire; using this patch in a radial tire goes against repair technology guidelines. For radial tires, radial-cord repair inserts should be used.
Which cements work with the 11-495 patch?
The manufacturer recommends Xtra Seal Standard cement (14-008) or Super-Blu (14-511) for cold-cure vulcanization. After mounting, sealing the patch edges and buffed surface with Sealiner is recommended.