MarMacʼs CMP Coupler is a single unit, external sealing band designed to prevent infiltration into corrugated steel pipe drainage systems. The coupling creates a strong, permanent, flexible seal around the joints of CMP / CSP pipe ends.

CMP couplers function on traditional galvanized and polymer coated pipe. They are easy to install, cost-efficient, permanent, and readily available. Our dedicated production line and unique manufacturing process allow for quick shipping regardless of coupler size or order quantity.

MarMac CMP Coupler membranes are constructed of cross-laminated layers of rubberized mastic, integrated mechanical compression bands, an internal woven reinforcement, and butyl underlays.

Our proprietary mastic aggressively adheres to the pipe surface, while the integrated compressions bands mechanically seal and form a permanent bond to the full circumference of the pipe walls. The internal woven polypropylene material provides increased shear and puncture resistance. The butyl rubber underlays compress beneath the compression bands and against the pipe wall and joint, forming an infiltration-proof seal on the corrugations.

Available in all sizes to connect virtually any diameter of corrugated metal pipe, Soil-Tight CMP Couplers seals both pipe ends. They are designed with four evenly-spaced, high-tensile compression bands, each reinforced with butyl rubber underlays. When the bands are tightened, the compressed butyl creates an infiltration-proof, exfiltration-resistant joint.

• Size: 8"
• Easy to install, permanent & versatile
• Galvanized or polymer-coated CSP
• Infiltration-proof
• Strong, shear & puncture-resistant
• Cost-efficient & readily available

***SPECIAL ORDER*** 

***Non-cancellable and non-returnable***

Available in sizes 6" - 144" 

MarMac Dissimilar Pipe Couplers (DP Couplers) are engineered to join, seal, and restrain the connections between pipes of differing material and/or pipes of varying nominal size*. These unique, external sealing bands are reinforced and prevent infiltration into gravity-flow drainage systems.

*While dependent upon pipe material(s) and/or overall pipe diameter(s), the difference in diameter must not exceed 15% or 8″ to allow for proper step-down.

DP Couplers integrate several unique components into a single, customizable, full-perimeter, external sealing band. Our specially-formulated, rubberized mastic aggressively adheres to all known pipe surfaces, providing a positive seal to battle infiltration. The coupling is reinforced with a sheet of durable, woven polypropylene which provides shear and puncture resistance. They are constructed with four integrated compression bands, which when tightened, form a mechanical seal, permanently bonding the mastic to the pipe wall.

• Size: 8"

Some of our most popular pipe jointing scenarios are below. This is by no means a comprehensive list or a suggestion that these connections perform better than others. Dissimilar Pipe Couplers are able to connect virtually any structurally sound pipe material with another. DP Couplings are also a great choice for two pipes of the same material, but with differing nominal diameter. The aforementioned diameters however, must be reasonably close to account for proper step-down/reduction.

1. RCP to HDPE/HDPP
2. CMP to HDPE/HDPP (Must note if CMP has annular / re-rolled or spiral  /non-rerolled ends)
3. CMP to RCP  (Must note if CMP has annular / re-rolled or spiral / non-rerolled ends)
4. PVC to HDPE/HDPP

***SPECIAL ORDER*** 

***Non-cancellable and non-returnable***

• Strong, permanent, shear & puncture resistant
• Easily installed & immediately inspectable
• Tens of thousands in use today with nearly a 100% success rate
• Full-perimeter, positive seal = infiltration-proof
• Specially formulated mastic layer
• Heavy-duty, high quality construction

Used as inlet to direct flow or outlet to disperse water

Used as inlet to direct flow or outlet to disperse water

To be used as culvert pipe. Culverts typically convey streams or small flows of water under embankments that are usually topped by roadway surfaces.

MarMacʼs CMP Coupler is a single unit, external sealing band designed to prevent infiltration into corrugated steel pipe drainage systems. The coupling creates a strong, permanent, flexible seal around the joints of rerolled (annularized) or non-rerolled (spiral) CSP pipe ends.

CMP couplers function on traditional galvanized and polymer coated pipe. They are easy to install, cost-efficient, permanent, and readily available. Our dedicated production line and unique manufacturing process allow for quick shipping regardless of coupler size or order quantity.

MarMac CMP Coupler membranes are constructed of cross-laminated layers of rubberized mastic, integrated mechanical compression bands, an internal woven reinforcement, and butyl underlays.

Our proprietary mastic aggressively adheres to the pipe surface, while the integrated compressions bands mechanically seal and form a permanent bond to the full circumference of the pipe walls. The internal woven polypropylene material provides increased shear and puncture resistance. The butyl rubber underlays compress beneath the compression bands and against the pipe wall and joint, forming an infiltration-proof seal on annular, spiral or helical corrugations.

Available in all sizes to connect virtually any diameter of corrugated metal pipe, Soil-Tight CMP Couplers seal both rerolled and non-rerolled pipe ends. They are designed with four evenly-spaced, high-tensile compression bands, each reinforced with butyl rubber underlays. When the bands are tightened, the compressed butyl creates an infiltration-proof, exfiltration-resistant joint.

• Size: 84"
• Works on the following connections:
• Rerolled (Annular)  to Non-rerolled (Spiral) ends
• Rerolled (Annular)  to Rerolled (Annular) ends
• Non-rerolled (Spiral) to Non-rerolled (Spiral) ends
• Easy to install, permanent & versatile
• Works on rerolled or non-rerolled ends
• Galvanized or polymer-coated CSP
• Infiltration-proof
• Strong, shear & puncture-resistant
• Cost-efficient & readily available

***SPECIAL ORDER*** 

***Non-cancellable and non-returnable***

Available in sizes 6" - 144" 

To be used as culvert pipe. Culverts typically convey streams or small flows of water under embankments that are usually topped by roadway surfaces.

Corrugation:

• 2 2/3" x 1/2"
• 3" x 1"

Gauges:

• 16 Gauge
• 14 Gauge
• 12 Gauge
• 10 Gauge
•   8 Gauge

Length:

• Various lengths available based on diameter

Other available coatings:

• Aluminized Type II
• Polymer

To be used as culvert pipe. Culverts typically convey streams or small flows of water under embankments that are usually topped by roadway surfaces.

Corrugation:

• 2 2/3" x 1/2"
• 3" x 1"

Gauges:

• 16 Gauge
• 14 Gauge
• 12 Gauge
• 10 Gauge
•   8 Gauge

Length:

• Various lengths available based on diameter

Other available coatings:

• Aluminized Type II
• Polymer

MarMacʼs CMP Coupler is a single unit, external sealing band designed to prevent infiltration into corrugated steel pipe drainage systems. The coupling creates a strong, permanent, flexible seal around the joints of rerolled (annularized) or non-rerolled (spiral) CSP pipe ends.

CMP couplers function on traditional galvanized and polymer coated pipe. They are easy to install, cost-efficient, permanent, and readily available. Our dedicated production line and unique manufacturing process allow for quick shipping regardless of coupler size or order quantity.

MarMac CMP Coupler membranes are constructed of cross-laminated layers of rubberized mastic, integrated mechanical compression bands, an internal woven reinforcement, and butyl underlays.

Our proprietary mastic aggressively adheres to the pipe surface, while the integrated compressions bands mechanically seal and form a permanent bond to the full circumference of the pipe walls. The internal woven polypropylene material provides increased shear and puncture resistance. The butyl rubber underlays compress beneath the compression bands and against the pipe wall and joint, forming an infiltration-proof seal on annular, spiral or helical corrugations.

Available in all sizes to connect virtually any diameter of corrugated metal pipe, Soil-Tight CMP Couplers seal both rerolled and non-rerolled pipe ends. They are designed with four evenly-spaced, high-tensile compression bands, each reinforced with butyl rubber underlays. When the bands are tightened, the compressed butyl creates an infiltration-proof, exfiltration-resistant joint.

• Size: 96"
• Works on the following connections:
• Rerolled (Annular)  to Non-rerolled (Spiral) ends
• Rerolled (Annular)  to Rerolled (Annular) ends
• Non-rerolled (Spiral) to Non-rerolled (Spiral) ends
• Easy to install, permanent & versatile
• Works on rerolled or non-rerolled ends
• Galvanized or polymer-coated CSP
• Infiltration-proof
• Strong, shear & puncture-resistant
• Cost-efficient & readily available

***SPECIAL ORDER*** 

***Non-cancellable and non-returnable***

Available in sizes 6" - 144" 

To be used as culvert pipe. Culverts typically convey streams or small flows of water under embankments that are usually topped by roadway surfaces.

Corrugation:

• 2 2/3" x 1/2"
• 3" x 1"

Gauges:

• 16 Gauge
• 14 Gauge
• 12 Gauge
• 10 Gauge
•   8 Gauge

Length:

• Various lengths available based on diameter

Other available coatings:

• Aluminized Type II
• Polymer

Corrugated Metal Pipe Products

• Pipe sizes 6î diameter through 144î diameter
• Round or Arch shapes
• Range of wall thickness and coatings available
• Variety of corrugations to meet H20 and E80 live loads
• Smooth interior pipe available
• Standard length is 20-feet, though many other lengths are available.