Gillinder Glass prides itself in Engineering for Tomorrow’s Technology. Our history of custom glass making and state-of-the art technical knowledge makes Gillinder Glass uniquely qualified to help you design your products for tomorrow’s technology.

You can expect our experienced team of engineers and craftsmen to provide you with technical design support for prototype development, short runs or full scale production of specialty glass types. Business Development Engineers and Customer Service personnel will guide you and keep you informed through each step in the process.

The multiple-furnace business model allows rapid changeovers to different types of glass, different colors, and different products. The in-house mold shop, finishing department and tempering department permit us to control all aspects of production with no transportation or out-source delays. This combination of services under one roof provides our customers with the rapid and reliable response to orders necessary to successfully meet the demands of the world's markets. 

We work closely with your team to make tooling and glassware to your specifications in the most cost-effective manner possible, providing suggestions based on our years of experience forming both basic and intricate parts across a broad array of glass products. Pre-production samples are provided for approval before final production begins. Such methodology leads to a very high success rate on new designs unmatched in the glass industry.


We are successfully working with customers to engineer custom glass to meet specific color, light transmission, thermal and physical shock resistance, and/or other requirements. We are currently working with glass covers and lenses for multiple LED application (including Airfield Lighting) and glass colors with distinguishable Infrared (IR) signatures for future Enhanced Vision System (EVS) uses.

Glass Being Fused


Gillinder Glass has been a world leader in the manufacture of technical pressed and molded glass for more than one hundred years.


We have the capability to press and mold components as large as 24" diameter and as small as <1". Our molded glass manufacturing process allows us to efficiently manufacture a multitude of glass shapes with complex designs and prismatic patterns with run sizes ranging from 50 pieces to 120,000 pieces annually. 

Gillinder Glass utilizes a range of manual and automated glass molding production processes that allow us precise control to match almost any dimensional and technical specification that will be applicable to a certain component. 


Molded glass components we currently manufacture are trusted in almost any conceivable application, ranging from wingtips of fighter jets and harsh and hazardous location fixtures on all seven continents (think offshore oil rigs and airfields), to underwater and marine lighting fixtures, food storage and prominent art installations.


Today, we utilize multiple furnaces for rapid turnaround on part runs and color composition melts. This allows us to reduce lead times and manufacture in smaller runs when required. 

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Glass Bulbs


Gillinder Glass regularly manufactures the compositions referenced below to industry and regulatory standards, including but not limited to: FAA (Federal Aviation Administration), MIL (Military), ICAO (International Civil Aviation Organization), IMCO (Intergovernmental Maritime Consultative Organization), AAR (American Association of Railroads) and ITE (Institute of Traffic Engineers) standards or to particular customer directives.

Compositions include:

  • Clear Soda Lime

  • UV Absorbing, Visible Transmitting

  • Clear Borosilicate

  • UV Transmitting, Visible Absorbing

  • Clear UV

  • Custom Colors and Compositions

  • FAA and ICAO Colors

  • Band Pass

  • Long Pass



Gillinder Glass maintains a fully equipped R&D, Technology and Quality Control Lab to evaluate our customers’ product light transmission, light dispersion characteristics, and chromaticity. This is yet another value Gillinder Glass customers receive in the designing new products, evaluating their current fixtures with different types of lamps, and an assurance that they will always receive the consistently high quality products they deserve and expect. In addition to custom designed gauges to ensure adherence to all critical tolerances, the lab equipment includes:

  • Dilatometer to determine the physical properties of glass

  • Multiple Polariscopes to examine strain in glass and correspondingly strength after anneal or tempering operations

  • Refractometer to measure and identify the refraction index

  • Focalmeter to identify focal point of a lens Spectrophotometer to measure chromaticity (color) in flat glass

  • Spectroradiometer to measure chromaticity (color) and intensity in shaped glass

  • Goniometer to position and measure intensity and color at any position around the product

Glass Mold
Glass Mold


Gillinder Glass maintains a fully equipped in-house mold and design shop. From start to end of life, our customers' molds are made in house (not outsourced), housed in a special atmospherically controlled storage area, and maintained in pristine condition after each use to ensure consistent production of the highest quality glass. Not only do our customers benefit from the quality resulting from the creation and ongoing care of their molds, they also benefit from the in-house expertise available to assist their R&D and Product Development staff in designing superior quality parts that can be produced in the most economical fashion which produces value and competitive advantage.

In addition to being prepared to work in almost all current software systems for our customers benefit, the mold shop is equipped with:

  • Fadal Computer Controlled Vertical Milling Center 3016L

  • Computer Controlled Bridgeport Horizontal Lathe

  • Bridgeport Series 2 Vertical Milling Machine

  • LeBlond Horizontal Lathe

  • TUR 63 Lathe

  • Welding and Braising Shop (including gas spray welding)

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The tempering of symmetric or complex shapes requires extensive glass knowledge, the proper equipment, and process conducive to repeatability. Gillinder Glass employs all three with its well-seasoned team of engineers, traceable process control, and its two efficient and computer controlled tempering lehrs. The balance of the process is proprietary, however once the heat strengthened piece of glass completes the strengthening tempering process, samples are examined using a polariscope and depending on application may undergo thermal shock or impact shock testing as well.

Gillinder Glass uses modern mixing equipment and techniques to create each batch of glass. Batches are created from proprietary formulas designed to create the glass components necessary to fulfill the customers’ needs. The mixer is the same as those used in the pharmaceutical industry and is designed to ensure homogeneity and consistency of composition, quality, strength, color, and resistance to heat or impact.

All of our furnaces (day tanks and closed pots) are computer controlled and monitored to maintain precise temperatures, repeatability, and the highest quality level. Presses also employ computer technology to ensure consistent control of pressure and time of the press.

After forming, each piece of glass is placed in a 10 foot wide annealing lehr and over the next 2+/- hours it travels over 75 feet through seven computer controlled convection heated zones. By using convection heat (as opposed to radiant), controlling belt speed, and employing our proprietary combination of settings for the multiple zones far more internal stress is relieved than by using other methods. This results in a stronger, more impact resistant product for our customers.



Glass Finishing

Gillinder Glass recognizes that after glass is molded and annealed, there is often a requirement for additional operations to perfect the customers’ products. Some glass manufacturers outsource these functions. However, Gillinder Glass has chosen to create its own, fully equipped, in-house, Finishing Department which allows us to carefully control quality at all stages of production and reduces transportation costs. Simply said, our customers benefit from better quality and lower prices. Some of the feature equipment and functions of the department include:

  • DCM Rotary Table and Lapmaster Grinders to smooth and flatten

  • Sand Blasters to create diffusion, masking or slip resistance

  • Horizontal, Circular, and Robotic Cutting Saws to create halves and other unique products

  • Up Shock and Down Shock Equipment to test resistance to thermal shock

  • Finishing Ovens to fine tune color, harden coatings, remove temper or re-anneal products

  • Glass Painting Booth to mask areas, soften light hotpots (particularly from LEDs), or mask areas