Mesa ETP (Mesa Engineered Tank Products) has manufactured floating roof drain systems and emissions control products for aboveground storage tanks from its Cincinnati, Ohio headquarters for more than 57 years. Operating as MESA Industries, Inc. and structured as a woman-owned business, mesa etp serves oil companies, storage tank terminals, refineries, tank fabrication contractors, and tank maintenance companies across the United States and internationally.
Mesa ETP — Company Overview
Founded in 1967 as Mesa Rubber Company, mesa etp has spent more than five decades specialising in the petroleum and aboveground storage tank (AST) industries. The company operates from three US locations: a manufacturing headquarters in Cincinnati, Ohio, and regional offices in Houston, Texas and Monroya, California. All products are manufactured in the United States.
International reach is supported through a network of strategic partnerships with representatives worldwide. The engineering-led business model — in which full-time engineers work directly with tank owners and maintenance companies to confirm product fit before manufacture — means every product is made to order against confirmed specifications rather than supplied from stock.
Mesa ETP’s customers span the core AST operator base: oil companies, independent tank terminal operators, refineries, storage tank fabrication contractors, and tank maintenance companies. The product range addresses two primary operational concerns — fluid containment through drain system performance and regulatory compliance through emissions reduction.
Floating Roof Drain Systems
Mesa ETP manufactures two primary floating roof drain product lines: the Resist-All-Clad and the Armor-Clad flexible pipe systems. Both are custom-fitted per tank to deliver a consistent, predictable lay pattern across the full range of external floating roof tank (EFRT) geometries. The smooth internal fluidways are engineered to maximise flow rates and minimise blockage risk.
Service life for properly installed systems exceeds 20 years, and the drain systems are compatible with any storage tank liquid product. Mesa ETP engineers work directly with the tank owner or maintenance contractor to specify dimensions and configuration before manufacture — the made-to-order model eliminates the fit compromises that come with off-the-shelf drain components.
Emissions Control and Seal Systems
Mesa ETP’s flagship emissions product is the FlexCore® liquid mounted seal, currently patent pending. The FlexCore is engineered to meet EPA 40 CFR Subpart Kc compliance requirements — the 2024 update to the NESHAP framework that raised the emissions efficiency threshold for floating roof tanks from 95% under the prior Subpart Kb rules to 98%. FlexCore achieves that 98% efficiency threshold.
The seal uses Armor Fabric™, a proprietary material described by the company as tougher than steel, as its primary structural component. The full emissions control range extends beyond FlexCore to cover the complete seal system requirements for both EFRTs and internal floating roof tanks (IFRTs): primary and secondary curtain seal systems, wedge seals, foam log seals, tube seals, and internal floating roof wiper seal systems. Proprietary vapor barrier fabric is also available for applications where vapour control is the primary specification driver.
For US oil storage terminal operators facing Subpart Kc compliance deadlines, the dual product loss and emissions control benefit of the FlexCore system represents a measurable return on the seal upgrade investment — reduced product evaporation and regulatory compliance achieved in a single installation.
Mesa ETP’s Engineering Model and Global Reach
Every mesa etp product is manufactured against an engineered specification confirmed before production begins. Full-time engineering staff engage directly with tank owners and maintenance companies to determine the correct product configuration for each application — tank diameter, liquid product, operating temperature, and regulatory requirements all feed into the specification.
In addition to the core Mesa ETP brand, the company operates WG Seals as a separate product channel, available at wgseals.com. The ClipLock fabric attachment system is a further proprietary product used across multiple seal configurations. Additional products include Vapor Guard gauge pole covers, gauge pole ladder covers, leg boots for floating roof support legs, pontoon skimmer systems, foam delivery systems, vapor bladders, vapor collection bladders, and floating roof pontoon repair liners.
The international representative network extends mesa etp’s geographic reach well beyond the three US offices. For terminal operators seeking to align tank storage sustainability commitments with regulatory compliance, the Subpart Kc-rated FlexCore system provides a direct path to documented emissions reduction.
Company Snapshot
| Founded | 1967 |
|---|---|
| Legal entity | MESA Industries, Inc. |
| HQ | Cincinnati, Ohio, USA |
| Additional offices | Houston, TX; Monrovia, CA |
| Ownership | Woman-owned business |
| Manufacturing | USA |
| Primary markets | AST operators, refineries, storage tank terminals |
| Hero product | FlexCore® liquid mounted seal |
| Website | mesaetp.com |
What does Mesa ETP manufacture?
Mesa ETP manufactures floating roof drain systems, emissions control seal systems, and ancillary aboveground storage tank products. Core product lines include the Resist-All-Clad and Armor-Clad flexible pipe drain systems, the FlexCore® liquid mounted seal for EPA Subpart Kc compliance, and a full range of primary and secondary curtain seals, wedge seals, foam log seals, and internal floating roof wiper seals.
Where is Mesa ETP headquartered and where does it operate?
Mesa ETP is headquartered in Cincinnati, Ohio, where all products are manufactured. The company maintains regional offices in Houston, Texas and Monrovia, California, and operates internationally through a network of strategic representative partnerships worldwide.
What is the Mesa ETP FlexCore liquid mounted seal?
The FlexCore® is Mesa ETP’s patent-pending liquid mounted seal engineered to meet EPA 40 CFR Subpart Kc compliance requirements for floating roof tanks. It achieves 98% emissions efficiency — the threshold mandated under the updated Subpart Kc rules — using the company’s proprietary Armor Fabric™ material. It is designed for both external and internal floating roof tank applications.
What EPA regulations are driving demand for Mesa ETP emissions control products?
EPA 40 CFR Subpart Kc, the updated NESHAP standard for petroleum liquid storage vessels, raised the required emissions efficiency for floating roof tank seals from 95% (under the prior Subpart Kb rules) to 98%. Terminal operators and refineries with external floating roof tanks must meet this standard, making compliant seal systems such as the Mesa ETP FlexCore a priority upgrade for affected facilities.
What types of storage tanks do Mesa ETP products serve?
Mesa ETP products are designed for both external floating roof tanks (EFRTs) and internal floating roof tanks (IFRTs). The floating roof drain systems serve EFRTs specifically, while the emissions control seal range — including curtain seals, wedge seals, foam log seals, and wiper seals — covers both tank types.