Since 1934, Washington, D.C.-based National Engineering Products has manufactured American-made sealants for high-temperature, high-pressure industrial joints and fire-stop applications. Its signature COPALTITE compound has remained on the U.S. Navy’s Qualified Product List for more than 90 years, while asbestos-free NEPSEAL 30 serves as a non-hardening fire-stop sealant. All products are made in Washington, D.C. for distribution across the United States and worldwide.
MIL-S-15204D
Compliance program
MIL-I-3064B
Compliance program
Pelseal Technologies, LLCFrom its Bensalem, Pennsylvania operation, Pelseal Technologies manufactures liquid fluoroelastomer coatings, adhesives, sealants and caulks for industrial equipment exposed to corrosive chemicals and severe temperatures. The company produces more than 100 formulations, many made with virgin Viton™ or other fluoroelastomers, and is a licensed participant in Chemours’ Viton™ Seal Program. All Pelseal products are sourced, engineered and manufactured in the U.S.A., with applications ranging from chemical-processing maintenance to aerospace and semiconductor equipment.BENSALEM, PA
Industrial Energy Products, IncSince 1993, Industrial Energy Products has manufactured American-made high-temperature materials and custom-fabricated insulation and fire-protection components at its Lancaster County, Pennsylvania facility. Its full-service shop takes projects from design and prototypes through production, with particular expertise in custom high-temperature gaskets and fire-rescue equipment. The company serves demanding applications in fields including power generation, manufacturing, defense, and firefighting.MOUNT JOY, PA
Sur-SealFounded in Cincinnati in 1965 as a family-owned business, Sur-Seal manufactures engineered components that solve sealing, insulation, thermal-management and protection challenges. Its custom-converting work ranges from precision gaskets to molded and extruded parts, supported by engineering services and a manufacturing network that now spans the United States, Mexico and China. Sur-Seal’s history includes making gaskets for the Apollo missions, while its combined operations now encompass more than 400,000 square feet and over 500 employees.CINCINNATI, OH
FenSealFounded by industry veterans, FenSeal supplies high-performance seals and weather-stripping for window and door manufacturers. Its FenShield line is made in America, with products stocked at strategically located warehouses so customers across the United States can receive shipments within two days. FenSeal also provides technical support to help customers specify or develop the right seal for an application.ONTARIO, CA