1.0 Penetration Seals
Use a modular, mechanical seal, consisting of rubber links shaped to continuously fill the annular space between the
pipe and the wall opening. Link-Seal® pressure plates shall be molded of glass reinforced nylon. Hardware shall be
mild steel with a 60,000 psi minimum tensile strength and 2-part Zinc Dichromate coating per ASTM B-633 and Organic Coating,
tested in accordance with ASTM B-117 to pass a 1,500-hour salt spray test (or 316 Stainless Steel).
Coloration shall be throughout elastomer for positive field inspection. Each link shall have permanent identification
of the size and manufacturer's name molded into the pressure plate and sealing element. The Contractor will submit to
verify the modular seals are domestically manufactured at a plant with a current ISO-9001:2000 registration.
Copy of ISO-9001:2000 registrations shall be a submittal item. PSI-Thunderline/ Link-Seal® Modular Seal as manufactured
by Pipeline Seal & Insulator, Inc, Houston, TX, or pre-approved equal.
2.0 Sleeves and Wall Openings
A. For diameters up to 24.81" install molded non-metallic high density polyethylene sleeves (HDPE) with integral hollow,
molded water-stop ring four inches larger than the outside diameter of the sleeve itself. End caps and reinforcing ribs,
domestically manufactured in an approved ISO-9001:2000 facility. Century-Line® Sleeve as manufactured by Pipeline Seal
& Insulator, Inc, Houston, TX., or engineered pre-approved equal.
B. For openings from 29.25" to 64.74" in diameter, use a modular hole-forming system consisting of interlocking HDPE
plastic discs, domestically manufactured in an ISO-9001:2000 facility. The system shall provide a round hole in
conformance with Link Seal® Modular Seal sizing data. Cell-Cast® Hole Forming Discs as manufactured by Pipeline Seal &
Insulator, Inc, Houston, TX, or engineer pre-approved equal.
Consideration of brands other than mentioned above shall be submitted to the Engineer for evaluation at least 10 days
prior to bid due date and shall include evidence of a minimum of 25 years of successful in-service application of
the mechanical seal, as well as current ISO-9001:2000 registration.