{"product_id":"ldi-industries-g321-3-vented-oil-level-sight-gauge","title":"Ldi Industries G321-3 Vented Oil Level Sight Gauge","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe LDI INDUSTRIES G321-3 is a vented oil-level sight gauge designed for monitoring fluid levels in industrial and mechanical equipment sumps, gearboxes, and reservoirs. The straight male thread configuration allows direct thread-in mounting, and the Buna-N seal provides reliable resistance to petroleum-based lubricants and common hydraulic fluids. At 4.25 inches in length with a 3\/8 inch thread size, the G321-3 is a compact, purpose-built indicator for applications where visual oil-level confirmation is required during routine service checks. Maintenance technicians and equipment service professionals install this gauge as a standard sight port.\u003c\/p\u003e\n\u003cp\u003eThe G321-3 is suited for use on compressors, gearboxes, hydraulic power units, and similar oil-wetted equipment where a low-profile vented sight indicator is needed. The vented design allows air displacement as oil levels rise and fall, preventing false readings caused by pressure differential. It installs in a standard 3\/8 inch threaded port and is appropriate for both light industrial and commercial equipment maintenance applications.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eVented design allows accurate oil-level reading by equalizing internal air pressure\u003c\/li\u003e\n  \u003cli\u003eStraight male thread configuration for direct mounting into threaded reservoir ports\u003c\/li\u003e\n  \u003cli\u003e3\/8 inch thread size fits standard industrial port dimensions\u003c\/li\u003e\n  \u003cli\u003eBuna-N seal material resists petroleum-based oils and general lubricants\u003c\/li\u003e\n  \u003cli\u003e4.25 inch length provides a clear sight window for visual level inspection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or service addition for industrial gearboxes, compressor sumps, and hydraulic reservoirs equipped with a standard 3\/8 inch threaded sight port.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by maintenance technicians or mechanical service professionals. Depressurize and drain the reservoir to a safe level before removing or installing any sight fitting. Use appropriate thread sealant compatible with petroleum lubricants and do not overtighten, as this can damage the seal or crack the sight body. Verify seal seating before returning the equipment to service.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGauge Type\u003c\/strong\u003e: Straight Male Thread\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3\/8 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeal Material\u003c\/strong\u003e: Buna-N\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVent Type\u003c\/strong\u003e: Vented\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: LDI INDUSTRIES\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: G321-3\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LDI INDUSTRIES","offers":[{"title":"Default Title","offer_id":67911292551474,"sku":"G321-3","price":78.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/88c57fcb7a4452663ed8591f046754da.jpg?v=1791208546","url":"https:\/\/voomisupply.com\/products\/ldi-industries-g321-3-vented-oil-level-sight-gauge","provider":"Voomi Supply","version":"1.0","type":"link"}