The Best Method for Jointing Corrugated HDPE Pipe
PolySeal TYPES
MarMac PolySeal is a flexible, high-strength pipe coupling that permanently seals and restrains corrugated plastic pipe. PolySeal Couplers are over-engineered, reinforced external joint seals designed to connect HDPE / HDPP corrugated pipe, while remaining both infiltration proof and exfiltration resistant. PolySeal Couplings are perfect for cut & butt joints, field repairs, new detention systems, and more.
Today, millions of PolySeal pipe couplings have been installed underground around the world with nearly a 100% success rate. PolySeal is the proven, premiere coupler for HDPE pipe connections, and the “go to” solution for when it really matters. PolySeal Couplers are designed to be installed in the worst field conditions, succeeding where other corrugated pipe adapters fail, and are an excellent choice for both field repairs and new installations. These couplers are over-engineered to outlast the pipes they connect.
Features & Benefits
- Infiltration-proof exfiltration-resistant
- Easily installed & immediately inspectable
- Millions installed today with nearly a 100% success rate
- Permanent protection with proven performance
- Strong, shear & puncture-resistant
- Double-Wide Repair & Custom options available
- Protection from corrosion, acids & alkali (see PolySeal CR)
Engineered to last.
* The below graphic shows our heavy-duty, 3-ply construction of PolySeal 30″≥ and all Double-Wide sizes. PolySeal sizes under 30″ use our 2-ply design where the second, inner layer of polyethylene/mastic are removed.
POLYETHYLENE BACKING
Heavy-duty, cross-laminated top layer, available with UV & chemical resistance
RUBBERIZED MASTIC
Specially formulated, rubberized mastic aggressively adheres to the pipe surface
WOVEN POLYPROPYLENE
Puncture & shear resistant reinforcement layer sandwiched between mastic sealant
RELEASE FILM
A protective, peelable release film protects the mastic until ready for use
PolySeal is manufactured with interval layers of our rubberized mastic, specially formulated to adhere aggressively to all known pipe surfaces. A sheet of puncture and shear-resistant woven polypropylene, and an outside backing of cross-laminated polyethylene makes PolySeal resistant to most acids and bases (additional protection available with Chemical Resistant PolySeal). The integrated compression bands mechanically “lock” into the corrugations of the pipe, bonding the mastic to the pipe wall, and forming a permanent seal.
The minimum length of a PolySeal Coupler is the circumference of the outside diameter of the pipe, plus eight inches for overlap.
| MIN | MAX | |
|---|---|---|
| RUBBERIZED MASTIC | ||
| Ash-inert matter | 8% | 15% |
| Volatiles | 0.1% | 2.0% |
| Softening temp | 175°F | |
| Specific gravity | 0.95 | 1.05 |
| Penetration | 60 dmm | 90 dmm |
| Flow | 10 mm | 10 mm |
| POLYETHYLENE BACKING | ||
| Tensile strength | 4000 psi | |
| Elongation at break | 100% | |
| Tear resistance | 1500 psi | |
| Water absorption | 0.01% | |
| REINFORCING MESH ELEMENT | ||
| Tensile strength (Warp) | 75 lb/in | |
| Tensile strength (Fill) | 75 lb/in | |
| Elongation at break (Warp) | 20% | |
| Elongation at break (Fill) | 20% | |
PolySeal should be stored carefully in their original packaging, out of direct sunlight and protected from the elements. Materials should be kept away from direct heat, sparks and open flame. For optimum results, couplers should be stored in a tepid (60°-80°F) environment prior to installation.
Surface preparations: Inspect the outside of the joint. Brush surface as needed to ensure it is free of debris. If installing on horizontal pipe, dig a bell hole for complete access to the joint.
The coupler shall be placed around the pipe with the mastic side to the pipe wall and spanning the joint, while centered on the joint gap to be sealed. The protective film shall be removed and the coupler applied with the overlap at the top of the pipe. The tensioning straps shall be aligned between the pipe corrugations and tightened. The closing flap protective film shall be removed and the closing flap shall cover the exposed straps and the work area.
| PIPE ID | WIDTH | LENGTH | WEIGHT |
|---|---|---|---|
| HOSE CLAMPS | APPROX | ||
| 4″ | 9″ | 21″ | 1 lbs |
| 6″ | 9″ | 29″ | 1.5 lbs |
| 8″ | 9″ | 36″ | 2 lbs |
| 10″ | 9″ | 46″ | 3 lbs |
| 12″ | 9″ | 54″ | 4 lbs |
| 15″ | 9″ | 64″ | 5.5 lbs |
| 18″ | 12″ | 76″ | 6 lbs |
| 24″ | 12″ | 101″ | 8 lbs |
| RATCHETS (heavy-duty sizes) | |||
| 30″ | 16″ | 122″ | 16.5 lbs |
| 36″ | 20″ | 142″ | 22 lbs |
| 42″ | 20″ | 162″ | 27 lbs |
| 48″ | 20″ | 183″ | 30 lbs |
| 54″ | 28″ | 204″ | 48 lbs |
| 60″ | 28″ | 222″ | 54 lbs |
VERSIONS
AVAILABILITY
Pipe sizes: 4-60″
APPLICATIONS
HDPE & HDPP Pipe
Field Repairs
Cut & Butt Joints
New Installations
Detention Systems
STANDARD PolySeal
Common-Size Seals for HDPE/P Pipe Joints
MarMac’s PolySeal is a high performance, external joint coupler designed for the prevention of infiltration and resistance of exfiltration at joints of common HDPE & HDPP corrugated pipe.
Our standard PolySeal coupler has three integrated compression bands. Sizes under 30″ are standard-duty and use hose clamp bands made of high-strength 409 or 304 stainless steel. Heavy-duty sizes over 30″ contain an additional membrane layer of polyethylene and mastic, and utilize built-in ratchet straps.
Double-Wide PolySeal
A Wider HDPE Coupler for Added Security or Repairs
MarMac’s Double-Wide PolySeal Couplings are heavy-duty 3-ply as they are manufactured with an additional layer of polyethylene and mastic. Nearly twice the width of a standard PolySeal, our Double-Wide PolySeal Coupler comes with five integrated compression bands, as opposed to three with our Standard coupler.
Chemical Resistant PolySeal
Protection Against Soil Containing Hydrocarbons
Chemical Resistant PolySeal (PolySeal CR) uses a proprietary, co-extruded, multi-layer barrier film lamination on the outside of the coupler. This film has been tested per ASTM F739 against a battery of chemicals at 95% concentration for permeation resistance with excellent results, including Benzene, Toluene and other hydrocarbon based solvents.
