PolySeal Coupler

External couplers for jointing of HDPE & HDPP pipe
  • No Infiltration or Exfiltration

  • Permanent Protection with Proven Performance

  • Easy to Install

  • Strong + Shear/Puncture Resistant

Flexible external seals for HDPE/HDPP pipe

MarMac PolySeal Couplers are external seals used for coupling of HDPE and/or HDPP pipe. PolySeal is a high-strength, reinforced pipe coupler that seals and restrains corrugated plastic pipe. It is flexible, strong, infiltration proof, and exfiltration resistant.

PolySeal Couplers are manufactured with three layers of rubberized mastic is formulated to adhere aggressively to all known pipe surfaces. A sheet of strong, puncture-resistant, woven polypropylene with an outside backing of cross-laminated polyethylene makes PolySeal resistant to acids and bases. Additionally, the integrated compression bands mechanically seal and “lock” the coupler into the corrugations of the pipe, forming a permanent bond to the pipe wall.

The minimum length of PolySeal couplers is the circumference of the outside diameter of pipe, plus an additional eight inches (8″) for overlap.

Features & Benefits
  • No lnfilltration or Exfilltration
  • Easy Application
  • Permanent Protection with Proven Performance
  • Strong, Shear & Puncture Resistant
MarMac PolySeal HDPP HDPE Pipe Coupler Graphic
Coupler composition:
  • Heavy duty polyethylene backing
  • Internal woven polypropylene reinforcement
  • Reinforced compression bands
  • Specially formulated mastic contact layer

In a laboratory setting, PolySeal has been third party tested to prevent infiltration into the joint when the joint is subjected to 30 ft head pressure (13 psi) per ASTM C 877.

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.

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%

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 tenisioning straps shall be lined up with 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 Fastener
4"
6"
21"
1 lb
Hose Clamp
6"
6"
25"
1.5 lbs
Hose Clamp
8"
6"
36"
2 lbs
Hose Clamp
10"
6"
46"
3 lbs
Hose Clamp
12"
9"
54"
4 lbs
Hose Clamp
15"
10"
64"
5.5 lbs
Hose Clamp
18"
12"
76"
6 lbs
Hose Clamp
21"
12"
89"
7 lbs
Hose Clamp
24"
12"
101"
8 lbs
Hose Clamp
30" *
15"
122"
16.5 lbs
Ratchets
36" *
15"
142"
22 lbs
Ratchets
42" *
20"
162"
27 lbs
Ratchets
48" *
20"
183"
30 lbs
Ratchets
54" *
28"
204"
48 lbs
Ratchets
60" *
28"
222"
54 lbs
Ratchets

AVAILABILITY

Pipe Sizes: 12-144″
Chemical-Resistant Versions
Double & Custom Widths

APPLICATIONS

HDPE & HDPP Pipe
Field Repairs
Cut & Butted Joints
New Installations
Detention Systems

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*All statements and technical information are based on tests and/or data which MarMac Manufacturing deems reliable, however, MarMac does not warrant or guarantee the accuracy or completeness of such information. Please read further manufacturer liability and warranty information.