Innovative pipe couplings and sealing solutions for stormwater and sanitary sewer systems.

Cutting-edge concrete additives and coatings for sustainably extending infrastructure service life.

American-made quality from South Carolina

Since our founding in 1953, MarMac® has proudly manufactured and formulated our high quality products in our hometown of McBee, South Carolina. In our state-of-the-art facilities we manufacture high-quality sealants & wraps for underground drainage and advanced protective solutions for infrastructure and supply them to customers throughout North America and around the globe.

MarMac® Construction Products Company and MarMac® Applied Infrastructure Sciences are subsidiaries of MarMac® Manufacturing Company, Inc. 

MARMAC® Construction Products

Custom Pipe Couplings & Sewer Sealing Solutions

Our MarMac® Construction Products division, where our company began in 1953, has remained a trusted manufacturer of the highest quality pipe couplings, pipe wraps, gaskets, sealants, and accessories for:

  • Underground gravity flow drainage systems
  • Storm water management infrastructure
  • Wastewater collection systems
  • Precast concrete pipe connections
  • Corrugated metal pipe (CMP) and steel pipe joints
  • HDPE pipe, PVC pipe, and other plastic pipe applications

With hundreds of thousands of our pipe couplers installed all over the world since our founding, MarMac® delivers the highest quality, permanent sealing solutions engineered to withstand decades of service in wastewater, stormwater, and drainage infrastructure applications.

MARMAC® Applied Infrastructure Sciences

Protective Coatings & Additives for Infrastructure

After decades of witnessing our pipe couplers and protective wraps outlasting the pipes and manholes they sealed, we founded MarMac Applied Infrastructure Sciences (AIS). Our AIS division specializes in:

  • Polymeric protective coatings for concrete, metal and wood
  • Concrete admixtures for enhanced durability
  • Topical surface treatments for below-grade and above-grade structures
  • Chemical engineering and R&D for infrastructure preservation

MarMac AIS operates as a specialized chemical formulations laboratory dedicated to sustainably extending the service life of critical building materials that form the foundation of modern infrastructure.

Quality matters.

– John S. McLeod, Sr.
Co-founder, 1953

John McLeod, Sr - MarMac Manufacturing Company, McBee, SC