--- product_id: 664499340 title: "1\" NPT Male 304 Stainless Steel Oil Sight Glass Hex Head Sight Plug Liquid Level Gauge Oil Indicator Sight Window for Air Compressor Gearbox Fittings Hydraulic Tank (1pcs 1 NPT Stainless Steel)" brand: "fanovo" price: "VT8316" currency: VUV in_stock: true reviews_count: 8 category: "Fanovo" url: https://www.desertcart.vu/products/664499340-1-npt-male-304-stainless-steel-oil-sight-glass-hex store_origin: VU region: Vanuatu --- # 1" NPT Thread Precision Operates -30°C to 120°C 304 Stainless Steel Durability 1" NPT Male 304 Stainless Steel Oil Sight Glass Hex Head Sight Plug Liquid Level Gauge Oil Indicator Sight Window for Air Compressor Gearbox Fittings Hydraulic Tank (1pcs 1 NPT Stainless Steel) **Brand:** fanovo **Price:** VT8316 **Availability:** ✅ In Stock ## Summary > 🔍 See Your Oil Like a Pro — Never Miss a Drop! ## Quick Answers - **What is this?** 1" NPT Male 304 Stainless Steel Oil Sight Glass Hex Head Sight Plug Liquid Level Gauge Oil Indicator Sight Window for Air Compressor Gearbox Fittings Hydraulic Tank (1pcs 1 NPT Stainless Steel) by fanovo - **How much does it cost?** VT8316 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/664499340-1-npt-male-304-stainless-steel-oil-sight-glass-hex) ## Best For - fanovo enthusiasts ## Why This Product - Trusted fanovo brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Universal Compatibility:** Perfect fit for air compressors, gearboxes, hydraulic tanks, and more—engineered for versatile industrial use. - • **Crystal Clear 3mm Sight Window:** Easily monitor oil levels with a robust, scratch-resistant glass viewport for instant visual checks. - • **Industrial-Grade 304 Stainless Steel:** Built to resist wear, corrosion, and high temperatures for long-lasting reliability. - • **Quality Assured with 100% Inspection:** Every unit undergoes rigorous QC checks with a full refund guarantee on defects—confidence you can trust. - • **High-Pressure & Temperature Tolerance:** Certified to withstand up to 800 PSI and extreme temps from -30°C to 120°C, ensuring peak performance under stress. ## Overview This 1" NPT Male Oil Sight Glass features premium 304 stainless steel construction, designed for durability and high-temperature resistance. With a pressure rating up to 800 PSI and a clear 3mm thick glass window, it provides precise, real-time oil level monitoring for air compressors, gearboxes, and hydraulic tanks. Backed by strict quality control and a satisfaction guarantee, it’s the essential upgrade for professionals demanding reliability and accuracy. ## Description The sight glass plug is a kind of liquid indicator used in tanks, air compressors, pumps, piping systems, automotive industries, lab equipment, bearing housing and mixers, etc. The sight glass gauge has a good viewport for visual Inspection of water, oil, and gas (WOG). Specification: Material: 304 stainless steel Color: Silver Size: As the picture shows Package includes: 1/2 NPT sight glass How to Use: The actual liquid level position screw oil in the oil tank can be placed on the tank sight glass to see, to judge from the outside to run defenders screw oil meets the operating condition. Warm note: Get your air compressor shut down and pressure relief when change oil level sight glass. Manual measurement, please allow slight errors on size. The colors may exist slight difference due to different screens. Review: High Quality 304 Stainless Steel Oil Sight Glass - I recently bought the 3/4" NPT Male 304 Stainless Steel Oil Sight Glass Hex Head Sight Plug Liquid Level Gauge Oil Indicator Sight Window for Air Compressor Gearbox Fittings Hydraulic Tank and was really impressed with the quality of the product. It was relatively easy to install and the 304 Stainless Steel material is very durable and reliable. I would highly recommend this product to anyone looking for a reliable and long-lasting oil sight glass. Review: They look good - Still in my toolbox, never used ## Features - 【MATERIAL】The main body is made of 304 stainless steel, which is not easy to wear and burst compares to plastic material. It can work in a high-temperature environment - 【Temperature & Pressure】Stainless steel oil sight glass gauge can work under pressure 800 PSI (55 bar) and temperature -30-120C(-22-248F). The sight window is qualified to pass strict pressure and temperature tests by our factory. - 【THREAD PROTECTION AND DURABLE】Thread of oil level sight glass are 1 Inch MNPT. The thickness of the sight gauge is 3mm you can easily observe the change of the oil by the glass sight window. - 【WIDELY APPLICATION】Oil level sight glass used widely to check the oil level of the pump in the air compressor. The actual liquid level position screw oil in the oil tank can be placed on the tank sight glass to see, to judge from the outside to run defenders screw oil meets the operating condition - 【SERVICE】Our QC department does 100% quality inspection on the sight glass goods before delivery. We will do a 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 | |---------------|-------| | ASIN | B098QHHRJ2 | | Best Sellers Rank | #1,152,550 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #4,521 in Air-Compressor Accessories | | Brand Name | FANOVO | | Customer Reviews | 4.6 4.6 out of 5 stars (24) | | Item Weight | 0.13 Kilograms | | Manufacturer | FANOVO | | Material Type | Alloy Steel, Glass, Stainless Steel | | UPC | 747992830030 | ## Product Details - **Brand:** FANOVO - **Item Weight:** 0.13 Kilograms - **Manufacturer:** FANOVO - **Material:** Alloy Steel, Glass, Stainless Steel - **UPC:** 747992830030 ## Images ![1" NPT Male 304 Stainless Steel Oil Sight Glass Hex Head Sight Plug Liquid Level Gauge Oil Indicator Sight Window for Air Compressor Gearbox Fittings Hydraulic Tank (1pcs 1 NPT Stainless Steel) - Image 1](https://m.media-amazon.com/images/I/61ppRVOllAL.jpg) ![1" NPT Male 304 Stainless Steel Oil Sight Glass Hex Head Sight Plug Liquid Level Gauge Oil Indicator Sight Window for Air Compressor Gearbox Fittings Hydraulic Tank (1pcs 1 NPT Stainless Steel) - Image 2](https://m.media-amazon.com/images/I/81RjARtVnBL.jpg) ![1" NPT Male 304 Stainless Steel Oil Sight Glass Hex Head Sight Plug Liquid Level Gauge Oil Indicator Sight Window for Air Compressor Gearbox Fittings Hydraulic Tank (1pcs 1 NPT Stainless Steel) - Image 3](https://m.media-amazon.com/images/I/81+Z2ySC15L.jpg) ![1" NPT Male 304 Stainless Steel Oil Sight Glass Hex Head Sight Plug Liquid Level Gauge Oil Indicator Sight Window for Air Compressor Gearbox Fittings Hydraulic Tank (1pcs 1 NPT Stainless Steel) - Image 4](https://m.media-amazon.com/images/I/81+Htmfg97L.jpg) ![1" NPT Male 304 Stainless Steel Oil Sight Glass Hex Head Sight Plug Liquid Level Gauge Oil Indicator Sight Window for Air Compressor Gearbox Fittings Hydraulic Tank (1pcs 1 NPT Stainless Steel) - Image 5](https://m.media-amazon.com/images/I/719vXpvzcyL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ High Quality 304 Stainless Steel Oil Sight Glass *by J***M on February 20, 2023* I recently bought the 3/4" NPT Male 304 Stainless Steel Oil Sight Glass Hex Head Sight Plug Liquid Level Gauge Oil Indicator Sight Window for Air Compressor Gearbox Fittings Hydraulic Tank and was really impressed with the quality of the product. It was relatively easy to install and the 304 Stainless Steel material is very durable and reliable. I would highly recommend this product to anyone looking for a reliable and long-lasting oil sight glass. ### ⭐⭐⭐⭐⭐ They look good *by T***S on July 31, 2025* Still in my toolbox, never used ### ⭐⭐⭐⭐⭐ a quality item *by J***I on March 14, 2023* nice product works as advertised --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vu/products/664499340-1-npt-male-304-stainless-steel-oil-sight-glass-hex](https://www.desertcart.vu/products/664499340-1-npt-male-304-stainless-steel-oil-sight-glass-hex) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-08*