Extrusion Burst Plugs

ZOOK Extrusion Burst Plugs are pressure relief devices designed for over-pressure protection of plastic extrusion processes.
Extrusion Burst Plugs


  • Each EBP assembly consists of a threaded tubular body with a rupture disk welded onto the process end
  • ZOOK has the ability to supply any specific combinations of dimensions, threading, and body configuration
  • The EBP assembly is mounted directly into the extruder equipment through a pressure port or thermocouple-well where critical pressures are experienced
  • Body materials: 304 series Stainless Steel with other materials available on request
  • Standard rupture disk material: Inconel
  • Stocked burst ratings 1,000 psig to 15,000 psig in 500 psi increments (for higher pressures contact ZOOK)
  • 0% manufacturing range
  • Burst tolerance ± 10% with typical standard deviation of ± 1% throughout the temp range of 300°F to 750°F (149°C to 399°C)
  • Standard EBPs in stock
  • Customized designs available
  • 100% factory leak-tested
  • 100% electronic thread verification of every assembly utilizing digital imaging
  • 100% ultra-sonically cleaned prior to shipment
  • Private labeling, custom packaging and other options available