Split expansion joint

Style 8420 Split™ is typically used in applications where small piping limits the use of flanged connections. An example of this includes vacuum pump inlets and outlets in pulp and paper applications. It is also used as a temporary repair for piping that has cracked. It can be provided in the split design or as a sleeved product. Adhesives kits are also available for easy installation.

Regional Availability Restrictions: 
Not available in Europe


  • Split design eliminates equipment disassembly, reducing costly downtime
  • Available in EPDM, nitrile and fluoroelastomer in sizes from 2in / 5cm to 24in / 61 cm
  • Can be customized for your application; contact Garlock with your specifications


  • Pipe Openings: to 6in. / 150mm
  • Clamps Required: 4
  • Thickness - 2in / 50.8mm to 12in / 304.8mm ID: 0.25in / 6.4mm
  • Thickness - 14in / 355.6mm) to 24in / 609.6mm ID: 0.375in / 9.5mm
  • Max. Pressure: to 15psi / 1bar
  • Max. Vacuum: to 14in. Hg / 356 mm Hg
  • Max. Temperature (Std. Adhesive): 165°F / 74°C
  • Max. Temperature (VITON® Adhesive): 400°F / 204°C
  • Movement: Vibration only
  • Max. Lateral Misalignment: 0.5in / 12.7mm
  • Joint Width: 8in / 203.2mm to 12in / 304.8mm


  • All types of vacuum pumps
  • Non-flanged piping
  • Small, irregular openings
  • Low-pressure and vacuum applications
  • Vacuum pump inlets and outlets in pulp and paper applications
  • Temporary repair for piping that has cracked


  • Offered as split design or sleeved product
  • Adhesives kits are also available for easy installation
  • Clamps are not provided
Find SDS and MSDS Documents