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Stainless steel (SS) stiffeners serve as indispensable components in plumbing systems. Engineered with precision, these stiffeners are adept at reinforcing connections within tubing networks, ensuring stability and durability . A flanged edge orients the stiffener in the tube and a locating dimple prevents accidental stiffener movement. These stiffeners are designed to fit IPS polyethylene pipes (ISP)and CTS polyethylene tubes (ISCP). 

Whether it’s securing connections in underground pipelines or facilitating fluid flow in residential plumbing, these stiffeners play a crucial role in maintaining efficient and reliable operations. The 304 stainless steel grade means that these insert stiffeners are suitable for use in potable water installations. In essence, SS stiffeners represent a fundamental component in modern plumbing infrastructure, delivering resilience, longevity, and peace of mind to engineers, contractors, and homeowners alike. 

  • Flanged and dimpled design prevents leaks and enhances installation. 
  • Tapered and fluted ends minimize insertion resistance and movement. 
  • Designed for use in potable water installs. 
  • Designed for insertion into CTS and IPS polyethylene plastic tubing or pipe. 
  • Interlocking tab design resists crushing. 
  • Prevents the collapse of the tubing or pipe end 
  • Provide crucial support for underground pipelines and fluid flow. 
  • Available in sizes from 3/4” to 2” for versatile integration. 
  • 304 Stainless steel construction 
  • Recommended on all pack-joint and ring compression water service fitting installations onto polyethylene tubing or pipe 
Part # Size 
968SSI4CTS FOR 3/4″ CTS TUBE 
968SSI5CTS FOR 1″ CTS TUBE 
968SSI6CTS FOR 1-1/4″ CTS TUBE 
968SSI7CTS FOR 1-1/2″ CTS TUBE 
968SSI8CTS FOR 2″ CTS TUBE 
Part # Size 
968SSI4PEP FOR 3/4″ PE PIPE 
968SSI5PEP FOR 1″ PE PIPE 
968SSI6PEP FOR 1-1/4″ PE PIPE 
968SSI7PEP FOR 1-1/2″ PE PIPE 
968SSI8PEP FOR 2″ PE PIPE