Scrapers are mostly made out of NBR or PU. PU scrapers are extremely resistant to wear and tear compared to NBR scrapers, so PU scrapers are increasingly used nowadays. Scrapers can also be equipped with a stiffening ring (for example, out of metal) and then pressed into the axial bore holes, instead of the snap-on versions.
* For technical reasons POM should be used up to a maximum temperature of 80° C only. For higher temperature we recommend Aluminum/Steel.