Dura-Perm Type Expansion Joints
Unaflex® Dura-Perm Styles 150 and 200 Expansion Joints combine the best 
features of Teflon™ chemical resistance, anti-stick properties, thermal stability, and resistance to age cracking–with the best features of elastomeric expansion joints–good noise and vibration dampening, high flexibility, high-pressure ratings. Temperature ratings to 400°F are available. Joints are available in 1” to 48” I.D. in standard face-to-face dimensions, or special lengths. Also available in multiple arch configurations, or as straight pipe. They are recommended for use in the chemical and pulp paper industries because of their capabilities to resist corrosive attack and high temperatures and pressure.
Multi-Purpose TFE
Unaflex® Multi-Purpose TFE Expansion Joints Styles 112-A and 113-A are solid-molded of Teflon™ and specially designed to withstand the higher pressures and temperatures in today’s piping systems. Their design allows a shorter face-to-face dimension, making them ideal for installations where space limitations are a factor. They are lightweight in design and corrosion-resistant. Available in sizes 1” to 12” I.D. and for temperatures ranging from 300◦F to 400◦F. Also available with 4, 5 and 6 arches.
* E.I. duPont Trademark.
Style 112A |
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Two Convolutions 1" to 6"-375°F 8" to 10"-250°F |
Vacuum Service Maximum Temperature for Full Vacuum (29.9" HG.) |
Three Convolutions 1" to 4"-375°F 5" to 6"-300°F 8" to 10"-125°F |