SECURE-FLEX Style 7000

Secure Flex style 7000 expansion joint

DuPont Kevlar® Reinforced Non-Metallic Expansion Joint

The Secure-Flex interlocking flanges are compatible to mate with Lap-Joint Stub ends, Raised Face or Flat Full Face type flanges. For other mating flange surfaces (wafer type check or butterfly valves), a full face hard spacer may be required.  Consult UIP International, Inc. Engineering. The standard floating flanges are 150# drilled powder-coated carbon steel.  Galvanized, stainless steel and other alloy type materials are also available. DIN-PN-JIS and other nonstandard drill patterns customizable to your needs.

Kevlar® wrapped around a solid steel ring in the base of the rubber flange portion eliminates the tire cord
from pulling out of the flange and provides superior sealing force when compressed against the mating
flange during installation. The ring also prevents the distortion of the sealing surface if the installation
tolerance is exceeded providing an “extra” margin of safety. Polyester tire cord may be substituted, with
customer approval, for sizes 14″ and above if design temperature does not exceed 250°F.

Our Flexible Tooling process allows us to manufacture the Expansion Joints to Non-Standard face-to-face dimensions. For smaller dimensions than Standard, design movements may be reduced.

Double and Triple arch expansion joints are also available for greater movement and reduced spring rates. We can also manufacture Concentric and Eccentric Tapers and Offset styles. Sizes up to 144” can be constructed.

Standard control rods that install out-board of the mating flanges are standard. Integral tie rods attached to the floating flanges can also be supplied.

NOTE: Decrease of working pressure for constructions made of Kevlar® above 350°F. 

Features and Benefits

  • Precision Laser-Cut Carbon Steel Flanges
  • Powder-Coated Flanges for maximum
  • Floating Flange Design for ease of
  • Available in non-standard face-to-face
  • PTFE lining available
  • Compensates for offset bolt holes and
    piping misalignment
  • Multi-arch configurations
  • Standard and custom drill patterns available
  • Concentric and eccentric tapers and offset
  • Sizes up to 144″

Secure-Flex 7000 Available Materials and Temperature Ratings

In order to accommodate a wide array of temperatures, the Secure-Flex Style 7000 is available in an
assortment of elastomer and reinforcement combinations. Temperature allowances may range from
180°F to 400°F.

Primary Elastomers

  • Natural Rubber – 180°F
  • Gum Rubber – 180°
  • Neoprene – 225°F
  • Nitrile – 225°F
  • EPDM – 250°F
  • CSM – 250°F
  • Chlorobutyl – 250°F

300°F rating available for EPDM and chlorobutyl for air service at 50 PSI MAX

  • Viton® – 400°F
  • PTFE/FEP/TFE – 400°F

Other Elastomers Available

  • White FDA
  • NSF
  • Peroxide Cured
Secure Flex Expansion Joint Data Chart

Temperature Limits for Continuous Service

Joint Series Temperature F Elastomeric Cover
150 250 Neoprene or Nitrile
200 250 Neoprene or Nitrile
200 XL 250 Neoprene or Nitrile
150 HT 300 Butyl or EPDM
200 HT 300 Butyl or EPDM
200 XL/HT 300 Butyl or EPDM
150 V 400 Viton®
200 V 400 Viton®
200 XL/V 400 Viton®