Manhole Products

Mainstay® ML-72 Sprayable Microsilica Restoration Mortar


Mainstay ML-72 is a special blend of portland cement, micro silica, thermoplastic fiber, densifiers, admixtures, and other modifiers that produces a high strength, low shrinkage, and low permeability mortar for the rehabilitation of deteriorated concrete structures. It is often used to restore structural integrity, seal rough, deteriorated surfaces, and resist external hydrostatic water pressure. In addition, Mainstay ML-72 is suitable for permanent water immersion service.

Madewell Product Detail Sheet

Material Safety Data Sheet

Mainstay® ML-CA Pure Calcium Aluminate Restoration Mortar


Mainstay ML-CA is a ready-to-use, calcium aluminate cement mortar that provides corrosion protection in a moderately low pH (>3.0) environment.


Madewell Product Detail Sheet

Mainstay® DS-5 Epoxy Coating


Mainstay DS-5 has a 100% solids epoxy coating that can be applied up to .125″ (125 mils) in one or two coats and is designed for use where corrosion is anticipated or known to be moderately aggressive (pH > 1.0, H2S < 100 ppm). This High Build Epoxy Coating utilizes a unique, multi-component curing system that contributes to a number of superior properties: toughness, permanent flexibility, and improved chemical and temperature resistance.

Madewell Product Detail Sheet

Material Safety Data Sheet – DS-5A

Material Safety Data Sheet – DS-5B

Madewell® Composite Liner


Used in aggressive industrial environments since 1962, the Mainstay Composite Liner is used to quickly restore deteriorated concrete and brick structures and provide long-term corrosion protection.

Madewell Product Detail Sheets

Flex-Seal Utility Sealant®


Flex-Seal Utility Sealant® is an inexpensive and permanent method of sealing the grade adjustment ring area and joint sections in a manhole or catch basin from the inside of the structure. Its urethane rubber has extreme toughness, elongation, abrasion, resistance, acidic resistance and longevity.

Flex-Seal Specification

Flex-Seal Installation Brochure

Flex-Seal Product Brochure

DURA-PLATE® 5800


DURA-PLATE® 5800 is a 100% solids, high build epoxy coating designed for the corrosion protection of concrete and steel in municipal and industrial wastewater treatment facilities and general industrial areas containing concentrated acids and alkali.

Sherwin Williams Product Detail Sheet

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