---
product_id: 380280293
title: "Boltigen 3/4'' NPT Male Hex Head Stainless Steel Oil Sight Glass Liquid Level Gauge Oil Indicator Window For Air Compressor Gearbox Fittings Hydraulic Tank Sight Glass (3/4'' NPT Male)"
brand: "boltigen"
price: "VT13283"
currency: VUV
in_stock: true
url: https://www.desertcart.vu/products/380280293-boltigen-3-4-npt-male-hex-head-stainless-steel-oil
store_origin: VU
region: Vanuatu
---

# Tempered borosilicate glass clarity 435 PSI max pressure -30 to 120°C operating temp Boltigen 3/4'' NPT Male Hex Head Stainless Steel Oil Sight Glass Liquid Level Gauge Oil Indicator Window For Air Compressor Gearbox Fittings Hydraulic Tank Sight Glass (3/4'' NPT Male)

**Brand:** boltigen
**Price:** VT13283
**Availability:** ✅ In Stock

## Summary

> 🔧 See your system’s heartbeat with Boltigen’s crystal-clear oil sight glass!

## Quick Answers

- **What is this?** Boltigen 3/4'' NPT Male Hex Head Stainless Steel Oil Sight Glass Liquid Level Gauge Oil Indicator Window For Air Compressor Gearbox Fittings Hydraulic Tank Sight Glass (3/4'' NPT Male) by boltigen
- **How much does it cost?** VT13283 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/380280293-boltigen-3-4-npt-male-hex-head-stainless-steel-oil)

## Best For

- boltigen enthusiasts

## Why This Product

- Trusted boltigen brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Wide Temperature Range:** Operates flawlessly from -30°C to 120°C, adapting to extreme environments.
- • **Crystal Clear Visibility:** Tempered borosilicate glass ensures an ultra-transparent view for instant liquid level checks.
- • **Pressure-Proof Precision:** Engineered to withstand up to 435 PSI for reliable performance under pressure.
- • **Versatile Industrial Fit:** Perfect for air compressors, gearboxes, hydraulic tanks, and more — join the pros who trust Boltigen.
- • **Durable Stainless Steel Build:** Solid 304 stainless steel resists wear and corrosion, built to last in demanding industrial settings.

## Overview

The Boltigen 3/4'' NPT Male Hex Head Stainless Steel Oil Sight Glass is a robust liquid level gauge designed for industrial applications. Featuring a durable 304 stainless steel body and tempered borosilicate glass, it offers exceptional clarity and withstands pressures up to 435 PSI and temperatures from -30°C to 120°C. Ideal for air compressors, gearboxes, hydraulic tanks, and more, this sight glass ensures precise, real-time fluid monitoring with industrial-grade reliability.

## Description

3/4 NPT Male Hex Head Stainless Steel Oil Sight Glass Liquid Level Gauge Oil Indicator Window For Air Compressor Gearbox Fittings Hydraulic Tank Sight Glass  Product name：Oil level sight glass Product color：Silver Product material：Tempered glass, stainless steel Product model：3/4 inch NPT Package： 1pc 3/4'' MNPT oil sight glass

## Features

- 【Temperature & Pressure】Stainless steel oil sight glass gauge can work under pressure 435 PSI (30 bar) and temperature -30-120C(-22-248F). The sight window is qualified to pass strict pressure and temperature tests by our factory.
- 【Good Transparet View 】The stainless steel oil level sight glass with tempered glass, can provide you with a good transparent sight view. You can easily observe the change of medium.
- 【Material】The hydraulic tank sight glass is made of solid stainless steel 304, The glass is borosilicate glass, The O-ring is NBR, which is not easy to wear and burst compares to plastic material. It can work in different environment.
- 【Application】 The stainless steel oil sight plug is a kind of liquid indicator used in tanks, air compressors, pumps, piping system, automotive industries, lab equipments, bearing housing and mixers etc. The oil level indicator has good viewport for visual Inspection of water, oil and gas (WOG).
- 【Service】 Our QC department do 100% quality inspection on the stainless steel sight glass before delivery. We will do 100% refund if the sight plug part is defective. Your valuable suggestions and advice will be greatly appreciated by our team.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Boltigen |
| Part number | FSG001 |
| Item Weight | 68 g |
| Package Dimensions | 6.2 x 5.21 x 4.19 cm; 68 g |
| Manufacturer reference | FSG001 |
| Size | 3/4'' NPT Male |
| Color | Silver |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![Boltigen 3/4'' NPT Male Hex Head Stainless Steel Oil Sight Glass Liquid Level Gauge Oil Indicator Window For Air Compressor Gearbox Fittings Hydraulic Tank Sight Glass (3/4'' NPT Male) - Image 1](https://m.media-amazon.com/images/I/61wGLDKtgaL.jpg)
![Boltigen 3/4'' NPT Male Hex Head Stainless Steel Oil Sight Glass Liquid Level Gauge Oil Indicator Window For Air Compressor Gearbox Fittings Hydraulic Tank Sight Glass (3/4'' NPT Male) - Image 2](https://m.media-amazon.com/images/I/71-6iMShLmL.jpg)
![Boltigen 3/4'' NPT Male Hex Head Stainless Steel Oil Sight Glass Liquid Level Gauge Oil Indicator Window For Air Compressor Gearbox Fittings Hydraulic Tank Sight Glass (3/4'' NPT Male) - Image 3](https://m.media-amazon.com/images/I/71KlXcfZ4wL.jpg)
![Boltigen 3/4'' NPT Male Hex Head Stainless Steel Oil Sight Glass Liquid Level Gauge Oil Indicator Window For Air Compressor Gearbox Fittings Hydraulic Tank Sight Glass (3/4'' NPT Male) - Image 4](https://m.media-amazon.com/images/I/71Vv0H2J0DL.jpg)
![Boltigen 3/4'' NPT Male Hex Head Stainless Steel Oil Sight Glass Liquid Level Gauge Oil Indicator Window For Air Compressor Gearbox Fittings Hydraulic Tank Sight Glass (3/4'' NPT Male) - Image 5](https://m.media-amazon.com/images/I/71yjjunLe2L.jpg)

## Available Options

This product comes in different **Size** options.

## Frequently Bought Together

- 3/4'' NPT Male Hex Head Stainless Steel Oil Sight Glass Liquid Level Gauge Oil Indicator Window For Air Compressor Gearbox Fittings Hydraulic Tank Sight Glass (3/4'' NPT Male)
- EVIL ENERGY 3/4" NPT Female Weld on Bung Fitting Aluminum 2PCS

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**Shop now:** [https://www.desertcart.vu/products/380280293-boltigen-3-4-npt-male-hex-head-stainless-steel-oil](https://www.desertcart.vu/products/380280293-boltigen-3-4-npt-male-hex-head-stainless-steel-oil)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-02-20*