Certified UV resistance classes for WKK cable ties

UV resistance has long been one of the most frequently asked topics among our customers. Whether cable ties are needed for outdoor electrical installations, solar panel setups, or general outdoor use, one key question remains: “How long will this cable tie last in outdoor conditions?”

In order to provide a clear and reliable answer, WKK has introduced a new UV resistance classification system, along with certified declarations for each cable tie product group. This enables our customers to make confident, well-informed choices for their applications. The classification system also supports better product comparison, reliable outdoor recommendations, and advice based on certified testing.

Take a look at our UV-resistant cable ties here.

To simplify product selection and improve transparency, we now classify our cable ties into three UV resistance categories:

Customers can request a “WKK Declaration of UV Resistance” for each class in their preferred language, making the selection process more transparent and efficient.

Standard black nylon cable ties offer basic UV resistance, typically suitable for up to 2–3 years of outdoor use.

Cable ties made from PA6.6 Vydyne® 25WSP provide strong UV resistance with a service life of 7 to 15 years. Thanks to finely dispersed carbon black and a balanced formulation, they absorb UV effectively and resist embrittlement over time.

PA12 cable ties are ideal for the most demanding outdoor environments. This material is naturally UV-resistant and absorbs very little moisture, making it particularly suitable for solar installations and coastal areas. With an estimated UV lifespan of over 20 years, these cable ties offer long-term durability even under harsh conditions.

Our WKK team is ready to help you select the best cable tie for your specific application.

Contact us today to request a declaration or discuss your project needs.