• Housing Material: 316 Stainless
• Window Material: glass (borosilicate available with Duplex stainless steel housing)
• Temperature operating range: 0 Kelvin to 400C
• Pressure safety factor: Minimum 4x
• Thermal shock resistance: Excellent
• Impact resistance: Excellent
• Leak Rate: Equivalent to the permeation rate through glass (~zero)
• Chemical resistance: Excellent for solvents, must be tested for specific acids and corrosives

Rayotek’s 316 stainless steel/fused glass SAE J514 Sight Windows are rugged, thermal and corrosion resistant Sight Windows. Rayotek’s SAE Sight Glasses are the right choice for ultra high pressure vacuum in applications such as pumps, engines, furnaces, compressors, hydraulic systems and boilers.  Rayotek SAE fused glass Sight Windows are so robust that even when cracked from mechanical damage they continue to seal and protect against release of pressure.

All Rayotek SAE J514 sight window metal housings are CNC machined, not cast, to exacting standards. Metal and window materials for all of our sight windows are traceable and certified back to their raw material sources to insure the highest, repeatable quality and reliability.

NOTE: Standard Rayotek SAE J514 Sight windows are ORB (O-Ring Boss). JIC, other SAE types, and non-standard larger SAE sizes available as Custom Sight Windows.

316 Stainless SAE J514 ORB housing with fused glass window:

Rayotek 316 Stainless Steel/fused glass SAE J514 sight windows are rugged, corrosion resistant sight windows for a variety of vacuum and pressure applications from hydraulics and engines, to deep sea lighting to furnace and boiler windows. Rayotek SAE J514 fused glass sight windows are so robust that even when cracked from mechanical damage they continue to seal and protect against release of pressure.