GRIP Engineering have released their latest newsletter of 2026 presenting a selection of their newest test fixtures for universal testing machines. This month’s edition looks at grips with Vulkollan® coating. Vulkollan® is a high-performance polyurethane elastomer, known for its outstanding wear resistance, high load-bearing capacity, and excellent elasticity. Grips with Vulkollan®-coated jaws provide a stable clamping force and improved friction.
Vulkollan® is one of the most powerful polyurethane elastomers available on the market. It’s engineered for extreme wear resistance, high load-bearing capacity, and exceptional elasticity.
In materials testing, grips equipped with Vulkollan®-coated jaws offer critical advantages:
- High friction coefficient: ensures a secure hold and prevents specimen slippage.
- Specimen protection: enables gentle clamping of sensitive surfaces without causing indentations or damage.
- Superior durability: long service life, even when testing abrasive materials.
Technical specifications (Vulkollan® standard)
These values represent typical characteristics of Vulkollan® based on Desmodur 15:
| Property | Value | Unit |
| Hardness | 80/90/95 | Shore A |
| Density | Approx. 1.20 | g/cm3 |
| Tensile | 40-50 | N/mm2 |
| Elongation at Break | 500-600 | % |
| Tear Propagation Resistance | 50-65 | N/mm |
| Abrasion Loss | 35-45 | mm3 |
| Temperature Range | -15 to +80 (short-term up to +110) | °C |
| Modulus (at 100% elongation) | 6-12 | N/mm2 |
Vulkollan® coatings – High-performance surface solutions
We’ve highlighted these test fixtures in more detail below (datasheets are available on request).
Red Vulkollan®-coated industrial rollers for peel strength testing, including a single coated roller and handheld roller assemblies with durable polyurethane surfaces.
We offer the flexibility to coat almost any surface according to your specific requirements — perfectly tailored to your application.
Industrial pneumatic capstan rope grip and hydraulic grip with red Vulkollan®-coated jaws, shown in multiple configurations with close-up details of the coated gripping surfaces used for secure material clamping.
Pneumatic testing grip with red Vulkollan® insert jaws and interchangeable gripping pads, shown with close-up views of the jaw components and coated inserts.
More grips with Vulkollan® Coatings
Collection of industrial grip jaws and inserts with red Vulkollan® coatings, including ribbed and smooth grip surfaces in multiple sizes for secure material testing applications.
Material testing grips holding a vertical test specimen with circular insets showing fabric, textile, and composite sample materials used for Vulkollan® coating testing.
AML Instruments offers an extensive range of tensile tester accessories, including extensometers, environmental chambers, and special grips and fixtures. We also have the ability to design bespoke fixtures.
Find yours today by contacting a member of the AML team or visiting our site.
