Since 1955, Stein Seal Company has designed and manufactured custom seals and precision components for demanding aerospace, nuclear, marine and industrial equipment. The privately owned company has grown from five employees in rented space to more than 200 employees and over 100,000 square feet at its specialized manufacturing facility, with engineering, repair and dynamic testing capabilities under one roof. Its Pennsylvania operation holds ISO 9001:2015 and AS9100D certifications, along with NADCAP approvals and FAA and EASA repair-station certifications.
ISO 9001:2015
certification
AS9100D
certification
NADCAP Welding
certification
NADCAP Non Destructive Testing (NDT)
certification
FAA Repair Station Y9SR478Y
certification
EASA Part 145
certification
Self-Release Supplier (aerospace)
certification
Certified to Perform Own Audits
certification
E-Verify Participant
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Stein Seal Industrial DivisionFounded in 1955, Stein Seal Industrial Division designs and manufactures custom mechanical seals and precision components for demanding rotating equipment, with a Pennsylvania engineering and production operation serving commercial and industrial customers. As the industrial arm of Stein Seal Industries, it brings seven decades of seal-design experience to applications ranging from power generation and chemical processing to pharmaceutical production. Its work is backed by reverse-engineering and repair services, more than 25 dynamic test rigs, and ISO 9001:2015 and AS9100D certification.TELFORD, PA
Sealing Specialists and Service CompanyFounded in 1976 by Tony Urso, Pittsburgh-area Sealing Specialists and Service Company has grown from a distributorship into a 25-employee manufacturing, repair and distribution center for industrial seals. The Glenshaw company produces custom seals and gaskets, distributes sealing products across the United States and Canada, and repairs pumps and hydraulic cylinders in-house. Its ISO 9001:2015 certification and planned 22,000-square-foot expansion reflect a business entering its fifth decade with the same focus on making seal sourcing faster and more practical for customers.GLENSHAW, PA
C.E. Conover & Co. IncSince 1947, C.E. Conover & Co. has manufactured sealing systems for aircraft and spacecraft, growing from an aerospace supplier into a U.S.-based producer of engineered seals and molded and machined polymer parts. Its Bensalem operation is known for developing proprietary REVONOC materials and for supplying sealing components used in applications ranging from the Grumman lunar module to water treatment and pharmaceutical production. Conover is registered to AS9100D and ISO 9001:2015.339991BENSALEM, PA
Specialty Seal GroupIn business for more than 20 years, Specialty Seal Group is a Latrobe manufacturer known for building custom hermetic seals for demanding industrial environments. Its work supports specialized customers in fields such as aerospace and medical technology, with ISO 9001:2015 certification reflecting its quality systems. The company also received the Pennsylvania Governor’s Award for Environmental Excellence.LATROBE, PA