--- product_id: 583812466 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 Hydraulic Tank (2pcs 1” NPT Stainless Steel with Baffle)" brand: "viwitech" price: "5038430₫" currency: VND in_stock: true category: "Viwitech" url: https://www.desertcart.vn/products/583812466-1-npt-male-304-stainless-steel-oil-sight-glass-hex store_origin: VN region: Vietnam --- # 800 PSI Pressure Rated 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 Hydraulic Tank (2pcs 1” NPT Stainless Steel with Baffle) **Brand:** viwitech **Price:** 5038430₫ **Availability:** ✅ In Stock ## Summary > 🔍 See Your Oil Levels Like a Pro — Never Miss a Beat! ## 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 Hydraulic Tank (2pcs 1” NPT Stainless Steel with Baffle) by viwitech - **How much does it cost?** 5038430₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/583812466-1-npt-male-304-stainless-steel-oil-sight-glass-hex) ## Best For - viwitech enthusiasts ## Why This Product - Trusted viwitech brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Universal Compatibility:** 1” NPT threading fits seamlessly with air compressors, gearboxes, hydraulic tanks, and more. - • **Industrial-Grade Durability:** Crafted from premium 304 stainless steel for unmatched wear and burst resistance. - • **Precision Visual Monitoring:** 3mm thick sight glass offers crystal-clear oil level visibility at a glance. - • **Quality Assured & Risk-Free:** 100% factory-tested with a full refund guarantee on defects—because your equipment deserves the best. - • **High-Pressure & Temperature Resilience:** Engineered to withstand up to 800 PSI and temperatures from -30°C to 120°C, perfect for demanding environments. ## Overview This 1" NPT male oil sight glass plug, made from robust 304 stainless steel, provides reliable, high-visibility liquid level monitoring for air compressors, gearboxes, and hydraulic tanks. Rated for pressures up to 800 PSI and temperatures between -30°C and 120°C, it ensures durability and precision in industrial settings. With a 3mm thick sight window and universal threading, it’s engineered for seamless integration and long-lasting performance, backed by rigorous quality control and a satisfaction guarantee. ## Description The sight glass plug is a kind of liquid indicator used in hydraulic oil 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. ## 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. - Widely Application: Oil level sight glass used widely to check the oil level of the pump in the air compressor, gearbox，hydraulic oil tank . 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. - Thread protetion and durable : Thread of oil level sight glass are 1 Inch NPT. The thickness of the sight glass is 3mm you can easily observe the level of the oil by the glass sight window. - 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 | |---------------|-------| | ASIN | B0CCP6R4HN | | Brand | VIWITECH | | Customer Reviews | 5.0 5.0 out of 5 stars (2) | | Date First Available | 30 September 2023 | | Item Weight | 245 g | | Item model number | 1NPT-002 | | Manufacturer | VIWITECH | | Manufacturer Part Number | 1NPT-002 | | Model | Oil Sight Glass | | Product Dimensions | 8 x 4.52 x 3 cm; 244.94 g | ## Product Details - **Brand:** VIWITECH - **Item dimensions L x W x H:** 8 x 4.5 x 3 centimeters - **Item weight:** 245 g - **Material:** Stainless Steel - **UPC:** 602168994186 ## 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 Hydraulic Tank (2pcs 1” NPT Stainless Steel with Baffle) - Image 1](https://m.media-amazon.com/images/I/610F3bXuT8L.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 Hydraulic Tank (2pcs 1” NPT Stainless Steel with Baffle) - Image 2](https://m.media-amazon.com/images/I/61V4yNYrH6L.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 Hydraulic Tank (2pcs 1” NPT Stainless Steel with Baffle) - Image 3](https://m.media-amazon.com/images/I/61uFR9CxCxL.jpg) --- ## 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.vn/products/583812466-1-npt-male-304-stainless-steel-oil-sight-glass-hex](https://www.desertcart.vn/products/583812466-1-npt-male-304-stainless-steel-oil-sight-glass-hex) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-06-04*