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Glass discs with or without central bore hole
SKU: Glass discs
MOUNTING:The glass discs are sized for being mounted into standard circular sightglass fittings to DIN 28120 / 28121 or similar, circular sightglass fittings for PN 0 (lightweight version) and also f...
Pressed Glass Products
SKU: Pressed Glass Products
Pressed glass is produced by the process of pressing the glass into a mould to give the the desired shade. We offer offer both hand and machine production options allowing productions for 100 to...
Industrial Application from Standard Glass Tubing
SKU: Duran - Industrial Applications
DURAN® glass tubing, a borosilicate glass, is renowned for its exceptional properties, making it a versatile material for numerous industrial applications. Its high chemical resistance, thermal shock...
Mica Sheild
SKU: Mica Shields
If you are working with steam, hot alkaline, or acidic solutions a mica shield is the best way to protect the integrity of your gauge glass. Over time these liquids will wear down even the toughest g...
Technical Application for Glass Rods
SKU: Glass Rods - Technical Application
Explore the endless possibilities of glass rods, a versatile material used in a wide range of technical applications. Our high-quality glass rods can be pressed into a variety of shapes, including cat...
Steam Level Gauge - Accessories
SKU: Steam Level Gauge - Accessories
A range of accessories are produced for steam level gauges including illuminators, gauge glasses, micas, shields, gaskets, engraved scales and various other components. Read through the product detail...
Oil & Gas Industry
SKU: Oil & Gas Industry
John Moncrieff: Your Premier Supplier of Glass and Components for the Oil & Gas IndustryWe are a leading provider of high-quality glass and essential components for the oil and gas sector. Our ex...
Quartz - Formed Parts
SKU: Quartz - Formed Parts
Formed Quartz Glass: Tailored Solutions for Diverse IndustriesOur formed quartz glass offers exceptional versatility and durability, enabling its customization into a wide range of shapes and sizes t...
Rubber Cones / Square Section Rubbers
SKU: Rubber Cones
John Moncrieff offers a wide range of high-quality rubber cones and square section rubbers designed to provide reliable sealing for glass tubes in various boiler applications. These precision-enginee...
Sight Glass Window
SKU: Sight Glass Window
Type SF & SG are compact low-cost assemblies that provide reliable level indication, and positive indication when liquid is present. These screw-in plugs are fitted with high quality glass. They...
Valve Spares / Die Form Rings
SKU: Valve Spares / Die Form Rings
John Moncrieff is a leading supplier of high-quality boiler valve spares and die formed packing rings, essential components for ensuring the efficient and reliable operation of your boiler valves.Die...
Quartz - Solid Glass Rods
SKU: Quartz - Solid Glass Rods
High-Purity Quartz Glass Tubing: Exceptional Heat Resistance and VersatilityOur quartz glass tubing, crafted from pure silica, offers exceptional purity, clarity, and remarkable heat resistance up to...
Quartz - Half Glass Rods
SKU: Quartz - Half Glass Rods
High-Purity Quartz Glass Tubing: Exceptional Heat Resistance and VersatilityOur quartz glass tubing, crafted from pure silica, offers exceptional purity, clarity, and remarkable heat resistance up to...
Quartz - Slotted Glass Rods
SKU: Quartz - Slotted Glass Rods
High-Purity Quartz Glass Tubing: Exceptional Heat Resistance and VersatilityOur quartz glass tubing, crafted from pure silica, offers exceptional purity, clarity, and remarkable heat resistance up to...