The variations in how well the urethane vulcanizates perform have a reason. The NBS testing simulates an extremely demanding service condition. The toughest of the vulcanizates are able to withstand the most pressure in this particular situation.

The Taber test, on the other hand, is a far less severe kind of test. Because they have more resilience and “give” while under load, the softer compounds outperformed the tougher ones.

For the NBS tests, the sliding abrasion resistance rises as the hardness does. The NBS Index of the 75A durometer vulcanizate was extremely high. This is most likely due to the plasticizer used in the compound lubricating the abrasive wheels.

It is without a doubt challenging to derive useful values from laboratory abrasion tests. Urethane is nevertheless regarded as having better sliding abrasion resistance, despite this. In many applications where wear is a concern, it performed quite well. Urethane routinely outlasted traditional rubber and plastic materials in the tests, often by a ratio of up to 8 to 1.

NextGen’s NBS Rubber Abrasion Tester – GenNBS can generate Suction at 2kg/cm².

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