National Engineering Products Inc. is a proud manufacturer and retailer of high-performance, MADE IN THE USA sealant, and fire-stop products.
NEPI client’s past and present run the gamut from national government agencies the world over to leading manufacturers. Because when a perfectly tight seal is mission-critical, COPALTITE™ is mission-ready.
Since 1934 our formulations have continued to meet the rigorous specifications of the United States Department of Defense, other federal and state agencies, and the private sector.
All NEPI products are manufactured in Washington, DC for nationwide and global distribution.
Everything Old Is New Again
In the early 1930s, Maryland native C. Gibson Ford realized the growing need for a sealant able to hold high temperatures and pressures on turbine joints, diesel engines cylinder heads and other superheated steam pressures. Having found a product in Germany that met his basic requirements – and foreseeing the possibility of global conflict that could cut off access to the product – he founded a DC-based firm – the National Boiler Improvement Company – and commenced domestic production of a similar, but even more versatile product.
After several years of R&D, a resin was developed. In June 1937, the company name was changed to National Engineering Products, Inc. (NEPI) and soon began production of a domestically-made, high-temperature sealing compound – soon to be named and trademarked as COPALTITE.
COPALTITE has been on the Qualified Product List of the United States Navy and other U.S. Government agencies since 1934 – more than 90 years!
NEPI continues to develop high-quality sealants and fire retardants needed by industry and consumers.
WHY COPALTITE
For nearly a century, COPALTITE has been the preferred “go-to” for manufacturers, machinists, and other skilled tradespeople when a tight, high-heat and pressure-resistant sealant is indispensable to machine operations readiness. Why COPALTITE and not something new that has come along since? A proven, 90-year record of withstanding steam pressure up to 2,000 psi, temperature to 1,200º F, and a raft of corrosive chemicals.
NEPI also produces NEPSEAL 30™, the asbestos-free, flame-resistant sealant for fire-stop applications.
NEPSEAL 30 is a non-hardening, flame-resistant sealant specifically formulated for use as a fire-stop material. For example, NEPSEAL 30 will prevent a shipboard fire from propagating through a stuffing gland which contains electrical cables.
