RD3H Extruder Rupture Disk (3″ Burst Plug)



Mounting Thread *

length is defined as length under the Hex Head

Burst Pressure *

For burst pressures not listed call 800-852-8324


RD3H OneHalf20 Extruder Rupture Disk (3″ Burst Plug)

RD3H Datasheet (PDF)


The Extruder Rupture Disk is designed for emergency relief of excess pressure in plastics processing machinery. It is designed to instantaneously rupture at a predetermined pressure.

The Extruder Rupture Disk has a 3″ stem, Hex Head and a 1/2-20 UNF thread.  Available in a wide variety of burst pressures and is typically a stock item.


  • Burst pressures from 1,500 to 15,000 psi
  • All stainless steel body and disk
  • Standard 1/2-20 UNF mounting thread


  • Low installation cost
  • Maintenance free
  • Intrinsically safe

RD3H Extruder Rupture Disks With 1/4 NPT Discharge Connection

Datasheet (PDF)

The Extruder Rupture Disks have a 3″ stem, Hex Head and a 1/2-20 UNF mounting thread. In addition the rupture disks incorporate a 1/4″ NPT discharge connection.

Additional information

Weight 1 lbs
Dimensions 5 × 5 × 3 in

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