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Expansion Adapters, Enlarging Interchangable Joints
Standardized Taper Precision: Engineered with exact CNC-ground 1:10 taper ratios, these adapters ensure a high-vacuum matte finish for airtight, leak-proof interfaces across mismatched joint sizes.
Differential Thermal Resistance: Fabricated from Type I Class A borosilicate glass, maintaining structural integrity and dimensional stability during extreme temperature fluctuations common in high-reflux organic synthesis.
₹420.00
Quick answer: Expansion Adapters connect laboratory glassware with mismatched ground-joint sizes, letting a smaller-jointed component attach securely to a larger vessel in a modular glassware assembly. Expansion Adapters, Enlarging Interchangable Joints is priced at approximately ₹420 (indicative market benchmark, incl. GST, August 2026).
This adapter connects laboratory glassware components with different ground-joint sizes, typically adapting a smaller apparatus joint to fit a larger vessel. That lets equipment with mismatched joint dimensions be combined into one modular assembly rather than requiring matching sizes throughout. Made from borosilicate 3.3 glass, it’s built for chemical resistance and a vacuum-tight fit, suited to distillation and synthesis setups in college and research chemistry laboratories.
Technical Specifications
| Parameter | Detail |
|---|---|
| Product Type | Expansion (enlarging) adapter, interchangeable joints |
| Function | Connects mismatched ground-joint sizes (smaller to larger) |
| Construction | Borosilicate 3.3 glass |
| Exact joint size pairing (e.g. 14/23 to 24/29) | Not independently verified for this listing — confirm with STEMAids before ordering |
| Vacuum-tight rating | Manufacturer-stated — verify before publishing in procurement documents |
| Price | Approx. ₹420 (indicative market benchmark, incl. GST, August 2026) |
| Exact dimensions/technical detail | Not independently verified for this listing — confirm with STEMAids before specifying in a tender |
Applications
- Connecting glassware components with mismatched ground-joint sizes
- Modular distillation and synthesis assemblies mixing different equipment sizes
- College and research chemistry laboratory glassware building
- General-purpose joint-size adaptation between apparatus
Care & Maintenance
- Grease or fit PTFE sleeves on both joint ends to maintain a reliable seal
- Inspect ground-glass surfaces for chips before each use
- Clean thoroughly after each use to prevent residue buildup
Why Choose STEMAids
STEMAids supplies a wide range of Chemistry Lab Equipments including Conductivity Tester for related laboratory and classroom needs. Eduscope Smart Learning Solutions Private Limited is a Udyam-registered micro manufacturing enterprise (UDYAM-DL-06-0069460) and ISO 9001:2015 certified, supplying schools, colleges and vocational institutes across India and for export.
Frequently Asked Questions
What does an expansion adapter do?
It connects glassware components with different ground-joint sizes, typically adapting a smaller joint to fit a larger vessel, so mismatched equipment can be combined in one assembly.
What exact joint sizes does this adapter connect?
The exact joint size pairing has not been independently verified for this listing — confirm with STEMAids before ordering.
What glass grade is this made from?
Borosilicate 3.3 glass, as manufacturer-stated — verify before citing in procurement documents.
Is this suitable for a college chemistry teaching lab?
Yes — expansion adapters of this kind are standard equipment for building modular distillation and synthesis assemblies in chemistry coursework.
Does STEMAids supply matching glassware in different joint sizes?
Contact STEMAids to confirm compatible components for a complete assembly.
Is STEMAids a registered manufacturer of this product?
Yes. Eduscope Smart Learning Solutions Private Limited is a Udyam-registered micro manufacturing enterprise (UDYAM-DL-06-0069460) and is ISO 9001:2015 certified. See the About page for full registration and certification details — manufacturer-stated, verify before citing in procurement documents.
Last updated: 29 August 2026.
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