Operating since 1961, Specialty Glass Products is a Willow Grove manufacturer known for solving unusually demanding glass-fabrication problems for technology-driven customers. Its engineers and craftspeople develop custom precision parts from glass and other hard materials, supporting applications where repeatability and tight tolerances matter. The company maintains an ISO 9001:2015-compliant quality system and accepts work from prototypes through production.
ISO 9001:2015
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GrayGlass CompanySince 1946, GrayGlass has fabricated, distributed and imported specialty glass for industrial, architectural, lighting and optical applications. Its Queens Village operation combines a 60,000-square-foot factory with more than 200 years of staff glass expertise, producing precision work from one-off parts through million-piece runs. GrayGlass supplied more than 6,000 high-precision absorbing glass shields for the National Ignition Facility, a project that reflects its particular strength in demanding optical fabrication.QUEENS VILLAGE, NY
Technical Glass Products, Inc. (TGP)Founded in 1990, Technical Glass Products is a Painesville-based fused-quartz fabricator whose work is shaped by decades of precision glassblowing and engineering experience. With 11,000-square-foot facilities in Ohio and Louisiana, TGP supports demanding research and semiconductor operations through custom fabrication and technical assistance, while maintaining ISO 9001:2015 certification at both locations.PAINESVILLE, OH
Swift GlassPrivately owned Swift Glass has spent nearly a century building its name around custom glass fabrication for original equipment manufacturers. From its New York facility, the company produces precision components for demanding applications, with ISO 9001:2015 certification and ITAR registration supporting work in fields such as medical technology and aerospace.ELMIRA HEIGHTS, NY
INSACO IncSince 1947, Quakertown-based INSACO has precision-machined and polished technical ceramics, sapphire, glass, and quartz for demanding applications. Founded as Industrial Sapphire Specialties making phonograph needles, the company later produced sapphire cover plates for the first Telstar satellite and now works from a plant spanning more than 50,000 square feet. INSACO measures and documents parts to tolerances sometimes reaching millionths of an inch, with experience ranging from prototypes to automated production.QUAKERTOWN, PA