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  • Plastic Pipe Internal Restraint Joints

HydroGrip Series

Formerly known as RieberLok, HydroGrip gaskets are internal restraints designed for PVC applications. Engineered with metal teeth embedded in the rubber to lock the gasket in place, HydroGrip converts a conventional joint into an internal restraint joint, eliminating the need for bolt-on harness restraints, clamps, thrust blocks, or other external or internal restraint technology on your PVC piping systems. Combined with the ease of installation, HydroGrip provides significant savings in installation time and material cost.

Product Specifications
Pipe Type
PVC/PVC-O – Polyvinyl Chloride
Sizing System
CIOD & IPS
Rubber Compound
SBR
Alternative Rubber
EPDM, NBR
Insert Material
Steel
Applicable Standards
ASTM D395, D412, D471, D573, D883, D1149, D1229, D1349, D1414, D1415, D1566, F913
Certifications
NSF-61, NSF-14 (CSA B182.2), NSF-14 (UL1285), NSF-14 (ASTM F477, CSA B137.3 & CSA B137.3.1)
Standard Sizes
CIOD – Inches: 4, 6, 8, 10, 12, 16, 18, 20, 24
IPS – Inches: 4, 6, 8
AG – Inches: 6, 8, 12

Additional sizes and materials may be available. Please contact customer service to discuss your project requirements.

Resources

HydroGrip Guide
Installation Video
HydroGrip-AG Cut Sheet
HydroGrip-R Cut Sheet

  • HydroGrip-R
  • HydroGrip-AG

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See Where HydroGrip Is Making an Impact

Explore our live, interactive map to view where HydroGrip is currently in use across the United States. Orange checkmarks show municipalities specifying HydroGrip, while blue pins highlight project-by-project applications. Check back often—the map will grow as HydroGrip continues to spread nationwide!

Have questions?

We’re ready to Help

If you would like advice on selecting the right seal, are seeking a customized solution, or simply have a question, let us know and we can help.

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testimonials

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  • “

    Hultec has provided exceptional products, customer service, and technical expertise. We look forward to a continuing business relationship as we develop and introduce new and efficient products.

    Gilbert Garcia JM EAGLE

  • “

    Thanks, Hultec for partnering up with Jet Stream and allowing us to enter the restraint joint market with the HydroGrip for C900 and IPS PVC pipe. The twenty plus year relationship we have had with Hultec, formerly S&B, has allowed us to stay a strong competitor in the PVC market.

    Jerry Shaver Jet Stream a "Pipelife Company"

  • “

    Clearly for us, Hultec's ability to carry out developments in record time, they are always open to new products. Innovation is at the heart of PAM's history, we are committed to working with companies that are preparing for the future.

    Pierre Genelot Saint-gobain Pam

  • “

    Hultec has been a good partner for Atkore. They have been helpful with Technical and Operational knowledge. They have helped us balance in time inventory deliveries allowing us to better serve our customers through a lean process.

    Michael Deneen Atkore