Style 9394 Low Pressure Expansion Joints

This multi-convoluted, lightweight expansion joint is designed for low pressure applications that require significant amounts of movement, axially and/or laterally. Its low spring rates make it ideal for air handling, load cell, bin activators, vibrating bins, silos, and pellet/dough hopper applications.

Available Liner Materials:

Chlorobutyl (Standard), ABRA-LINE™, ABRA-SHIELD®, Natural Rubber, FKM (Fluoroelastomer), CSM, SURE-TEC™, EPDM, FDA EPDM, HNBR (Hydrogenated Nitrile), Nitrile, DETECTOMER® FDA Nitrile, Neoprene, FDA Neoprene.

Pressure Capabilities:

• Without external reinforcing rings: up to 3 psi / 0.2 bar
• With external reinforcing rings: up to 15 psi / 1.0 bar

Vacuum Capabilities:

• Without internal reinforcing rings: up to 3 in Hg / 75 mm Hg
• With internal reinforcing rings: up to 15 in Hg / 381 mm Hg
• Contact Garlock if higher vacuum or pressure ratings are required

Movement Capabilities:

• 3/4in / 19 mm axial compression per convolution
• 5/8in / 16 mm axial elongation per convolution
• 5/8in / 16 mm lateral deflection per convolution
• Movements are non-concurrent. Larger convolutions are available to provide more movement.
• Contact Garlock if above listed movements need to be exceeded.

NOTE: Flanged designs require retaining rings for an effective seal. Sleeve type requires clamps; the overall length of the expansion joint should include an additional 4in / 101.6 mm for clamping space.

Contact Garlock to for additional information and assistance with specifying the product for the application.