Protective tapes


Rub’r nek is a self-sealing tape capable of creating an impermeable barrier on the exterior of prefabricated concrete joints. The tape acts like a protective film, it features excellent mechanical and abrasion resistance and also superior dimensional stability.
RUB’R NEK is designed to be applied by hand with the utmost ease, providing an effective and long-lasting seal to the vast range of joints, protecting the waterstop from any damage.
RUB’R NEK is an elastomer based product and is manufactured in a single production process where agglomerates, synthetic elastomers and plasticizing resins are mixed together.
It is protected by a film which keeps the surface clean and does not alter its colloidal capacity. The film must be removed just before use.

• Easy to apply by hand, cold, in temperatures ranging between 0°C to +60°C
• Permanent, flexible and waterproof seal
• Robust and resistant to temperatures ranging between - 40°C and +80°C
• Excellent mechanical properties and good resistance to chemical agents
• Excellent adhesive properties on concrete surfaces
• Long-lasting technical and dimensional specifications: does not harden or oxidise
• Self-sealing properties if punctured
• Resistant to acid solutions with up to 5% concentration of caustic potassium, hydrochloric acid and sulphuric acid; hydrogen sulphide and sewage in general

Can be applied externally to many types of concrete joints:
- joints on round, elliptical and arched pipes
- joints for manholes
- sewer pipe joints
- vaulted structures
- septic tank joints
- connection joints for concrete bridges.
Can be used during new construction, repair or restoration work

Plastic hydrocarbon (%) :


Mineral aggregate (%): 18.27
Volatile matter (%) 3.22
Specific weight at 25 °C: 1.13
Ductility: 18.27
Softening point in °C: 160
150 g cone penetration in 5 seconds (%) : 85
Flammability point in °C: 304
Tensile stress ( kg/ cm2): 12
Elongation (%): 150
Dimensions: 150 mm x 15.25m 61 m boxes

The products are produced with the best row materials available on the market in order to obtain a high quality product. Our guarantee covers the quality of the product but not its applications which cannot be under our control.


Mibo S.r.l. - Head and Operative offices: Via Chiavegoni, 11 - 36040 Brendola (VI) Italy
Tel/Fax: +39 0444 569182 - - P.Iva: 01619760240 - Cookie Policy