Overview
The Luneta Sight Glass is a 3D sight glass for oil level and drain ports on gearboxes, pumps, compressors and bearing housings, with a nearly 360° view of level, color, clarity, foam, water and sediment.
Molded in one piece to reduce leak points, from impact- and chemical-resistant, UV-stabilized Tritan™. A flat front face suits pen lights and cameras, a built-in hex allows wrench installation and two eyelets hold tags. Etched level marks never wear off. For mineral and synthetic oils compatible with Viton™ and PMMA.
Oilsan is Luneta’s distributor for Türkiye and ships worldwide from Istanbul. Call +90 212 909 93 36 or email info@oilsan.com for quotes.
Applications
Gearboxes, centrifugal pump bearing housings, bearing sumps, compressors, vacuum pumps, hydraulic tanks and retrofit of old sight glasses.
Typical Properties
| Body | Tritan™ copolyester, UV stabilized |
|---|---|
| Seal | Viton™ O-ring (BSPP and metric) |
| Temperature and pressure | −40 °C to 93 °C · 4.5 bar (65 psi) |
| NPT | 1/4", 3/8", 1/2", 3/4", 1", 1-1/4", 1-1/2", 2" |
| BSPP | 1/4", 3/8", 1/2", 3/4", 1" |
| Metric | M10×1.0 · M10×1.5 · M12×1.5 · M16×1.5 · M20×1.5 · M22×1.5 |
| Part no. examples | SG.050NPT · SG.075BSPP · SG.M20X15 |
Typical values, not specifications. Request the full technical data sheet for test methods and results.
Packaging and Product Photos


Frequently Asked Questions
Where can I buy Luneta Sight Glass?
Oilsan is Luneta’s distributor for Türkiye and ships worldwide from Istanbul. Call +90 212 909 93 36 or email info@oilsan.com for quotes.
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