Our Rupture Disk Group consists of manufacturing plants and marketing centers located in three countries, on the North American and European continents. Combined, we offer 90+ years of experience in the field of manufacturing rupture disks. ZOOK operates the worlds largest facility dedicated exclusively to the manufacturing of graphite rupture disks.

ZOOKs graphite rupture disk origins stem from our founders pioneering efforts into the development of graphite rupture disks for use as overpressure protection devices on graphite heat exchangers during the 1950s. We are recognized as the worlds leader in the development and production of graphite rupture disks. Our graphite facility is located in a suburb of Cleveland, Ohio, USA.

This facility was awarded the first issuance of an ASME stamp for graphite disks. Additionally, ZOOK is certified in accordance with the Pressure Equipment Directive (PED 97/23/EC) and can provide marked Graphite Rupture Disks.

ZOOK is also certified in accordance to TÜV standards