---
product_id: 733299667
title: "3/4\" NPT Male Hex Head Stainless Steel Oil Sight Glass Fluid Level Gauge Oil Indicator Window Air Compressor Gearbox Fitting for Hydraulic Tank Sight Glass (3/4\" NPT Male)"
brand: "boltigen"
price: "VT1259"
currency: VUV
in_stock: false
url: https://www.desertcart.vu/products/733299667-3-4-npt-male-hex-head-stainless-steel-oil-sight
store_origin: VU
region: Vanuatu
---

# Tempered borosilicate glass window -30 to 120°C temperature range 800 PSI pressure rating 3/4" NPT Male Hex Head Stainless Steel Oil Sight Glass Fluid Level Gauge Oil Indicator Window Air Compressor Gearbox Fitting for Hydraulic Tank Sight Glass (3/4" NPT Male)

**Brand:** boltigen
**Price:** VT1259
**Availability:** ❌ Out of Stock

## Summary

> 🔧 See your system’s heartbeat with crystal-clear precision!

## Quick Answers

- **What is this?** 3/4" NPT Male Hex Head Stainless Steel Oil Sight Glass Fluid Level Gauge Oil Indicator Window Air Compressor Gearbox Fitting for Hydraulic Tank Sight Glass (3/4" NPT Male) by boltigen
- **How much does it cost?** VT1259 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/733299667-3-4-npt-male-hex-head-stainless-steel-oil-sight)

## 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

- • **Versatile Application Fit:** 3/4" NPT male thread fits hydraulic tanks, air compressors, pumps, and more for seamless integration
- • **Industrial-Grade Durability:** 304 stainless steel body resists corrosion and wear for long-lasting performance
- • **Precision Visual Monitoring:** Clear tempered borosilicate glass with red ball indicator ensures instant fluid level and condition checks
- • **Quality Assured Reliability:** 100% factory pressure and temperature tested with premium NBR O-ring for leak-proof sealing
- • **High Pressure & Temperature Tolerance:** Operates reliably up to 800 PSI and from -30°C to 120°C, perfect for demanding environments

## Overview

This 3/4" NPT male hex head oil sight glass by Boltigen features a robust 304 stainless steel body and a tempered borosilicate glass window, designed to withstand pressures up to 800 PSI and temperatures from -30°C to 120°C. Equipped with a red ball indicator and durable NBR O-ring, it offers reliable, clear fluid level monitoring for hydraulic tanks, compressors, and industrial equipment, ensuring maintenance professionals never miss a critical update.

## Description

3/4 NPT Male Hex Head Stainless Steel Oil Sight Glass Fluid Level Gauge Oil Indicator Window Air Compressor Gearbox Fitting Hydraulic Tank Sight Glass Product Name: Oil Level Sight Glass Product Color: Silver Product Material: Tempered Glass, Stainless Steel Product Model: 3/4-14NPT Thread Pitch: 1.814mm Features: - Effective in most operating environments - Visible oil color, transparency, water and other contaminants build up clearly. - Suitable for various liquids and adapts to varying levels of pressure. - Easy to install and long service life. Package: 1 x 3/4" MNPT Oil Sight Glass NPT Thread Size is a nominal pipe size and is not intended to represent the actual diameter. Please refer to the size chart for specific screw diameters.

## Features

- 【TEMPERATURE AND PRESSURE】Stainless steel 3/4 NPT oil sight glass gauge works under pressure of 800 PSI (55 bar) and temperature -30-120C (-22-248F). Sight windows pass strict pressure and temperature testing in the factory
- 【Superior Transparent View】3/4 NPT stainless steel oil level sight glass with tempered glass provides good transparent vision. Compressor Oil Sight Glasses come with baffles and red balls for easy viewing of media changes
- Material: The hydraulic tank sight glass is made of 304 stainless steel, the glass is borosilicate glass, and the inner O-ring of oil sight glass is NBR and is less likely to wear and burst than plastic materials. Can be used in different environments
- Applications: The compressor oil sight plug is a type of liquid indicators used in tanks, air compressors, pumps, plumbing systems, automotive industries, laboratory equipment, bearing housings, mixers, etc. Oil level indicator has a viewport suitable for visual inspection of water, petroleum, gas (WOG)
- 【Service】Our quality control department conducts 100% quality inspection for stainless steel sight glasses before shipping. If there is a defective part of the sight plug part, we will refund you 100% Your valuable suggestions and advice will be greatly appreciated by our team

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Boltigen |
| Package Dimensions | 6.2 x 5.21 x 4.19 cm; 68 g |
| Color | Silver |
| Are Batteries Included | No |
| Item Weight | 68 g |

## Images

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

## 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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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-02-16*