Sight Ports | McMaster-Carr

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246 Products

Sights

These sights have a glass window.

Easy-View All-Plastic Sights

Machined from one piece of stain- and impact-resistant plastic.

Easy-View Sights

View tank contents from multiple angles through the plastic domed window.

High-Visibility Sights

Easily view liquid movement and level changes from a distance—these sights have an indicator ball inside the glass window.

Shatter-Resistant Sights

The window and body are made from a single piece of plastic, making these sights more shatter resistant than sights with a glass window.

Sights for Oil Inspection

Continuously monitor oil quality through the clear plastic reservoir and use the attached drain valve to remove water accumulation.

High-Pressure Sights

With a thick glass window fused to a metal body, these sights resist cracking at high pressures.

High-Temperature Sights

Often used in kilns and other heating equipment, these sights have a quartz window that can withstand temperatures up to 1600° F. They're also known as peep sights.

Weld-On Sights

Weld these sights to single-wall tanks.

Sights for Quick-Clamp Sanitary Tube Fittings

Monitor food, brewery, chemical, pharmaceutical, and biotech processing lines with these sights that attach to quick-clamp fittings for fast installation and easy removal for cleaning.

Through-Wall Sights

Mount these sights from the inside of your tank and secure with a lock nut.

Press-Fit Through-Wall Sights

Press these sights into a hole in your tank wall; no additional mounting nuts are needed. They mount from the outside.

Easy-View Flanged Sights

Check the contents of your tank from multiple angles with the domed window. To mount these sights, fasten their extend flange to tank walls.

Flanged Sights

An extended flange makes these sights easy to bolt onto tank walls.

High-Vacuum Flanged Sights

Add a window to your high-vacuum system. With a pane of glass sealed inside a high-vacuum CF flange, these sights bolt onto vacuum chambers, tee fittings, and manifolds.

High-Vacuum Sights for Quick-Clamp Fittings

Designed with quick-clamp (KF) connections, these sights connect to a port on a high-vacuum chamber, so you can monitor what's happening inside.