Metric Sight Glass

These sight windows are typically used for visual inspection, machine vision, optical sensors, in use with all common hydraulic oils, refrigeration, water heaters, and compressed air applications.

Metric sight glasses with male fittings conforming to ISO 6149-1 standard, (SAE 2244-1/DIN 3852, Part 3). The housings have metric straight threads to ISO 262. In other words, metric sight glasses are governed by ISO 6149-1 for the port details, and the threads are governed by Metric ISO 261 standard.

The windows in these metric sight glasses are fused or bonded or sealed with a gasket within their metal housings. The part is easy to install, and has a long working life without maintenance. Be sure to use the installation guide to ensure proper torque is used, as glass windows need some diligence during installation.
Image Encole Part Number Price Aperture Dia. Thread Max Operating Pressure Max Operating Temperature Housing Material Window Material
266A1000 $244.95 each 9.50 mm M18 x 1.5 210 bar 140 C AISI 316 Quartz
266A1001 $255.78 each 11.60 mm M20 x 1.5 210 bar 140 C AISI 316 Quartz
266A1003 $275.99 each 16.30 mm M27 x 2 210 bar 140 C AISI 316 Quartz
266A1004 $368.87 each 21.80 mm M33 x 2 210 bar 140 C AISI 316 Quartz
266A1005 $409.00 each 30.00 mm M42 x 2 210 bar 140 C AISI 316 Quartz
266A1006 $498.16 each 35.10 mm M48 x 2 210 bar 140 C AISI 316 Quartz
266A1007 $558.75 each 45.70 mm M60 x 2 200 bar 140 C AISI 316 Quartz
702M18 $195.03 each 10.00 mm M18 x 1.5 50 bar 280 C 2205 Duplex Borosilicate
702M20 $223.70 each 12.50 mm M20 x 1.5 50 bar 280 C 2205 Duplex Borosilicate
702M26 $275.80 each 16.50 mm M26 x 1.5 50 bar 280 C 2205 Duplex Borosilicate
702M27 $314.65 each 16.50 mm M27 x 2 50 bar 280 C 2205 Duplex Borosilicate
702M33 $356.40 each 22.00 mm M33 x 2 50 bar 280 C 2205 Duplex Borosilicate
702M42 $394.70 each 24.00 mm M42 x 2 50 bar 280 C 2205 Duplex Borosilicate
702M48 $418.25 each 26.00 mm M48 x 2 50 bar 280 C 2205 Duplex Borosilicate
702M60 $456.75 each 34.00 mm M60 x 2 50 bar 280 C 2205 Duplex Borosilicate
702M78 $498.20 each 44.00 mm M78 x 2 50 bar 280 C 2205 Duplex Borosilicate
703M18 $398.80 each 10.00 mm M18 x 1.5 50 bar 300 C Hastelloy C-22 Borosilicate
703M20 $459.75 each 12.50 mm M20 x 1.5 50 bar 300 C Hastelloy C-22 Borosilicate
703M26 $515.80 each 16.50 mm M26 x 1.5 50 bar 300 C Hastelloy C-22 Borosilicate
703M27 $538.98 each 16.50 mm M27 x 2 50 bar 300 C Hastelloy C-22 Borosilicate
703M33 $575.90 each 22.00 mm M33 x 2 50 bar 300 C Hastelloy C-22 Borosilicate
703M42 $649.47 each 24.00 mm M42 x 2 50 bar 300 C Hastelloy C-22 Borosilicate
703M48 $698.54 each 26.00 mm M48 x 2 50 bar 300 C Hastelloy C-22 Borosilicate
703M60 $757.41 each 34.00 mm M60 x 2 50 bar 300 C Hastelloy C-22 Borosilicate
703M78 $795.80 each 44.00 mm M78 x 2 50 bar 300 C Hastelloy C-22 Borosilicate