SAE Sight Glass

SAE J514 sight glasses with straight thread O-ring boss. The window is bonded or fused into a housing forming a single-piece part requiring no maintenance during its lifetime. These sights make a hermetic seal with an O-ring fit in the groove between the port and the sight glass housing. The port is typically machined in using a porting tool conforming to SAE J1926-1. In other words, the sight glass boss follows the SAE J514 standard, while the port follows SAE J1926-1. Porting tools are available from a number of machine tool suppliers .

These sights can be installed and uninstalled with the same O-ring several times without loosing the hermetic seal. Ideal for quick installations. SAE sights come in a variety of materials. Windows can be made from crystalline quartz, fused quartz, sapphire, borosilicate. For extended transmission range the windows are available in Zinc Selenide, ZnSe, for IR, or high-purity UV quartz. Metal housings are typically made from stainless steel.


SAE Straight Thread Sight Glasses, Quartz Window, 316 Stainless Steel Housings

Sight windows with SAE straight threads for sealing with an O-ring. For visual inspection, machine vision, laser sensors, in use with all common hydraulic oils, refrigerants, pharmaceutical processing equipment, paper & pulp plants, marine exterior, oil wells, feedwater heaters. Resists most oxidizing acids and salt sprays.

AISI 316 Stainless Steel housing has a finish of 32 RMS providing smooth surfaces reducing residues or particle contaminants. Quartz window is sealed into the housing with non-outgassing quartz-filled bond forming a single-piece part. This sight glass has a long working life under severe temperature swings and prolonged exposures to UV light.

Required Port to ISO 11926-1 (SAE J1926-1). Male Stud conforms to: MS16142 for use with O-ring Parker Size 3-916 (AS568A-916). The O-ring is sold separately.

SAE-Dash SizeThreadAperture Dia.Max Operating PressureMax Operating Temp.Housing MaterialWindow MaterialMfg. P/N.Encole P/N.Price
SAE-8 BossThread 3/4-160.380 inch210 bar70 CAISI 316Quartz100528268A1000$348.36each
SAE-10 BossThread 7/8-140.460 inch210 bar65 CAISI 316Quartz100530268A1001$366.04each
SAE-12 BossThread 1-1/16-120.640 inch210 bar60 CAISI 316Quartz100532268A1002$427.35each
SAE-16 BossThread 1-5/16-120.860 inch210 bar50 CAISI 316Quartz100534268A1003$464.68each
SAE-20 BossThread 1-5/8-121.180 inch210 bar45 CAISI 316Quartz100536268A1004RFQ
SAE-24 BossThread 1-7/8-121.380 inch210 bar40 CAISI 316Quartz100538268A1005RFQ
SAE-32 BossThread 2-1/2-121.800 inch200 bar35 CAISI 316Quartz100540268A1006RFQ