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Insignia O-Rings

Insignia™ O-rings can be attached to a liner that is inverted into the pipeline to provide a compression seal at the termination points of the liner. This procedure remotely positions the O-rings between the host pipe and the liner tube or between a cured liner and a new liner (cold joint), sealing any annular space and providing a long-term flexible seal. Insignia™ O-rings can be utilized for upper end of lateral liners, a lateral liner overlapping a connection seal and each end of sectional liners. Installation Procedure The frangible O-rings are attached on the inside of the liner at any termination point. The liner is resin-saturated, loaded into the launching device and then positioned at the point of repair. Air pressure is applied and the liner begins to invert embedding the O-rings between the liner and host pipe. The liner is allowed to cure and within 24 hours the swelling process creates a proven, flexible, long-term and water-tight seal.

    ASTM F3240

    Standard Practice for Installation of Seamless Molded Hydrophilic Gaskets (SMHG) for Long-Term Water tightness of Cured-in-Place Rehabilitation of Main and Lateral Pipelines1, 2

    Significance and Use

    Purchase the full version of this standard by visiting the ASTM website here.

    This practice is for use by designers and specifiers, regulatory agencies, owners, and inspection organizations that are involved in the rehabilitation of main and lateral pipelines and manholes. As for any practice, modifications may be required for specific job conditions.

    1. Scope

    1. This practice covers the requirements for the installation of seamless molded hydrophilic gaskets (SMHG) in cured in place pipe (CIPP) rehabilitation of main and lateral pipelines.
    2. The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
    3. There is no similar or equivalent ISO Standard.
    4. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
    5. This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

    2. Referenced Documents

    2.1 ASTM Standards:

    1. D1149 Test Methods for Rubber Deterioration-Cracking in an Ozone Controlled Environment
    2. D1600 Terminology for Abbreviated Terms Relating to Plastics
    3. D2240 Test Method for Rubber Property-Durometer Hardness
    4. F412 Terminology Relating to Plastic Piping Systems
    5. F1216 Practice for Rehabilitation of Existing Pipelines and Conduits by the Inversion and Curing of a Resin-Impregnated Tube
    6. F1743 Practice for Rehabilitation of Existing Pipelines and Conduits by Pulled-in-Place Installation of Cured-in-Place Thermosetting Resin Pipe (CIPP)
    7. F2019 Practice for Rehabilitation of Existing Pipelines and Conduits by the Pulled in Place Installation of Glass Reinforced Plastic (GRP) Cured-in-Place Thermosetting Resin Pipe (CIPP)
    8. F2599 Practice for The Sectional Repair of Damaged Pipe By Means of An Inverted Cured-In-Place Liner
    9. F2561 Practice for Rehabilitation of a Sewer Service Lateral and Its Connection to the Main Using a One Piece Main and Lateral Cured-in-Place Liner

    2.2 NASSCO Guidelines:

    1. Recommended Specifications for Sewer Collection System Rehabilitation

      1. PACP NASSCO Pipeline Assessment & Certification Program

    2.3 ISO Standard

    1. ISO 17025 General requirements for the competence of testing and calibration laboratories

    2.3 ISO Standard

    anchor screws; CIPP; connection seal; cured in place liner; end seal sleeve; leading edge; mechanical fastener; O -Ring; seamless molded hydrophilic gasket (SMHG); sectional liner; watertight seal


    For a copy of the ASTM F3240 Standard, please visit