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Inserts

Inserts

Inserts are precision-engineered mechanical and glass components fitted within backing flanges, glass process pipework, and structural framework assemblies. Goel Scientific Glass Works Ltd. manufactures high-grade split ring type inserts and precision glass inserts designed to reinforce pipe couplings, seal open flange ends, and ensure leak-tight glass-to-glass and glass-to-metal joints across industrial chemical and pharmaceutical installations. In glass process piping, split ring type inserts sit inside backing flange rings to hold the conical or beaded glass pipe end securely. As flange bolts are tightened, the split ring evenly distributes clamping pressure across the glass shoulder, preventing point-stress fractures while creating a pressure- and vacuum-tight seal.
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Key Features

  • Split-Ring Design: Dual-segment split construction allows rapid installation and replacement over glass pipe ends without requiring total disassembly of adjacent pipework.
  • Uniform Load Distribution: Distributes mechanical bolt tension evenly across the conical glass flange, protecting fragile borosilicate components from cracking.
  • High Chemical & Corrosion Resistance: Manufactured from cast iron, coated steel, stainless steel (SS 304/316), PTFE, and certified Borosilicate 3.3 glass for harsh chemical environments.
  • Precision Glass Construction: Precision glass inserts match ground-joint tolerances, providing smooth, inert flow paths and reliable sealing surfaces.
  • Full Pressure & Vacuum Capability: Engineered to maintain high seal integrity under demanding process pressures and continuous deep vacuum loads.

Specifications

Parameter Standard Range
Flange Sizing Range DN 15 to DN 300 (1/2″ to 12″ Glass Coupling Standards)
Split Ring Body Material Cast Iron, Stainless Steel (SS 304 / SS 316), or Powder-Coated Steel
Insert Lining / Gasket Options PTFE, High-Grade Elastomers, or Non-Asbestos Composite Materials
Glass Insert Material Certified Borosilicate Glass 3.3
Pressure / Vacuum Rating Full Vacuum up to 3.0 bar (Size and coupling dependent)
Operating Temperature -50℃ to +200℃ (Dependent on insert lining material)

Applications

  • Glass Pipework Couplings: Providing rigid support and load distribution for glass-to-glass, glass-to-metal, and glass-to-bellows flanged joints.
  • Routine Maintenance & Retrofitting: Rapid gasket and insert replacement during plant maintenance, minimising plant downtime.
  • High-Purity API Synthesis: Chemical-resistant PTFE and glass inserts prevent fluid contamination in corrosive solvent systems.
  • Modular Pilot Plants & Column Support: Anchoring glass column sections, heat exchangers, and reactor trains into structural support frames.
  • Specialised Flow Management: Custom precision glass inserts used inside ground joints for precise liquid distribution and internal reflux control.

Why Choose Us?

Established in 1977, Goel Scientific Glass Works Ltd. (a Borosil Scientific company) is a global leader in custom scientific glass fabrication and industrial process equipment. Serving over 2,800 customers worldwide, we manufacture split ring type inserts and precision glass components built strictly to international glass plant standards. Every insert is dimensionally inspected and material-certified, ensuring seamless interchangeability with existing Goel Scientific installations and third-party borosilicate glass systems.

FAQs

Split ring type inserts are placed inside backing flanges to grip glass pipe shoulders, distributing bolt tension evenly to create secure, leak-free flange connections without damaging the glass.

Precision glass inserts provide inert, corrosion-resistant sealing and smooth internal flow channels for borosilicate glass reaction, distillation, and column systems.

Yes, the split design allows easy removal and re-fitting during routine gasket changes or equipment reconfigurations without damaging the insert or the glass pipe.

Modern split ring inserts are constructed from cast iron or stainless steel, paired with non-asbestos composite, elastomeric, or virgin PTFE linings for maximum chemical safety and sealing performance.

Yes, Goel Scientific Glass Works Ltd. manufactures custom split ring and precision glass inserts tailored to non-standard pipe diameters, specialised flange profiles, and client process drawings.