These expansion joints require no protective sleeve
The ERV-BR is a rubber expansion joint (photo) constructed from a highly abrasion-resistant, specialized rubber compound. Except for cases of extreme strain (for instance, sharp and rough-edged matter), there is no need to use an additional inner-protective sleeve with the ERV-BR. Suitable for slurries, sludges, emulsions, and dusty or powdery products, these joints are available in sizes from 25 to 300 mm, with larger dimensions available by request. Hall 8.0, Stand L93 — Elaflex Gummi Ehlers GmbH, Hamburg, Germany