Screw Caps, Stoppers and Stopcocks Manufacturer, Suppliers and Exporter in India

Jlabexport is a leading Screw Caps, Stoppers and Stopcocks Manufacturer,and suppliers in India

Screw caps, stoppers and stopcocks are laboratory glassware components used to close openings, retain fittings and control flow within compatible laboratory assemblies. This category is intended for schools, universities, TVET institutions, research laboratories and industrial buyers selecting components by product type, reference, joint size, key material, flow configuration and stated size.

Jlab Export is a Manufacturer & Exporter of laboratory caps, washers, rings, stoppers and stopcocks from Ambala, India. The category contains 15 listed products, with product codes from JL-SCSAS-1651 to JL-SCSAS-1665. The range includes plastic caps, PTFE washers, rubber rings, cap fittings, closed-end stoppers, straight-through stopcocks, burette stopcocks, valve-type and right-angle stopcocks, double-oblique stopcocks and T-bore stopcocks. Selected models are listed with PTFE or glass keys, while several stopcock configurations are available in stated sizes from 2 mm to 10 mm.

What products are available in this category?

The category contains four closure or fitting accessories, one closed-end stopper and ten stopcock configurations. Buyers should use the product code because several stopcocks share the same nominal size while differing in key material, flow path or orientation.

The listed products are:

• Plastic Cap — JL-SCSAS-1651
• PTFE Washer — JL-SCSAS-1652
• Rubber Ring — JL-SCSAS-1653
• Cap Fittings — JL-SCSAS-1654
• Stoppers, Both Ends Closed — JL-SCSAS-1655
• Stopcocks, PTFE Key, Straight Through — JL-SCSAS-1656
• Stopcocks, Glass Key, Straight Through — JL-SCSAS-1657
• Burette Stopcocks, PTFE Key, Straight Through — JL-SCSAS-1658
• Burette Stopcocks, Glass Key, Straight Through — JL-SCSAS-1659
• Valve Type Stopcocks, PTFE Key — JL-SCSAS-1660
• Value Type Stopcocks, PTFE Key, Right Angle — JL-SCSAS-1661
• Double Oblique Stopcocks, Borosilicate Glass, PTFE Key — JL-SCSAS-1662
• Double Oblique Stopcocks, Borosilicate Glass, Glass Key — JL-SCSAS-1663
• T Bore Stopcocks, Borosilicate Glass, PTFE Key — JL-SCSAS-1664
• T Bore Stopcocks, Borosilicate Glass, Glass Key — JL-SCSAS-1665

How do you choose laboratory caps, washers, rings and fittings?

Choose caps, washers, rings and fittings by matching the exact product code, listed reference and required compatibility with the existing laboratory assembly. Dimensions and material details are incomplete for several accessories, so procurement should not be based on the product name alone.

The Plastic Cap page confirms only product code JL-SCSAS-1651. The PTFE Washer listing provides Bibby references QW13/6, QW18/7, QW24/6, QW24/9, QW24/11, QW28/6, QW28/11 and QW28/18.

Rubber Ring JL-SCSAS-1653 is listed in white, black and red. Cap Fittings JL-SCSAS-1654 includes the descriptions C Cap, connectors and ring/washers. Buyers should request dimensions, material grades, pack quantities and matching-component references before ordering.

Which closed-end stopper sizes are listed?

Stoppers, Both Ends Closed, product code JL-SCSAS-1655, are listed in cone sizes B10, B14, B19, B24, B29 and B34. Buyers should identify the required cone size and confirm that it matches the intended flask, vessel or glassware joint.

The listing does not state:

• Stopper material
• Overall length
• Bore or wall thickness
• Joint tolerance
• Temperature limits
• Packing quantity

Where the stopper is intended to replace an existing item, the enquiry should include the current joint designation, quantity and any required dimensional tolerance. Product suitability should be confirmed against the complete assembly rather than the cone designation alone.

What straight-through stopcock sizes are available?

Straight-through stopcocks are listed with either a PTFE key or a glass key in sizes 2, 4, 6, 8 and 10 mm. The applicable product codes are JL-SCSAS-1656 for the PTFE-key model and JL-SCSAS-1657 for the glass-key model.

Both pages show the same size range, but they do not define whether the stated size refers to the bore, port or another measurement. Buyers should therefore specify:

• Product code
• Key material
• Listed size
• Required body material
• Tube or connection dimensions
• Quantity
• Intended assembly

Stopcock taper, retaining arrangement, overall dimensions, pressure suitability and vacuum suitability are not stated. Specifications are available on request.

What is confirmed for the PTFE-key burette stopcock?

Burette Stopcock JL-SCSAS-1658 is described as a borosilicate-glass straight-through stopcock with a PTFE key. The listing states that the barrel is polished, the key is self-lubricating and interchangeable, and a plastic screwthread retaining device is supplied. It also states a 1:10 taper.

The product page does not provide an available size or bore. Buyers should request:

• Stopcock size
• Bore diameter
• Overall dimensions
• Burette connection dimensions
• Replacement-key reference
• Packing quantity

The self-lubricating description applies specifically to JL-SCSAS-1658 and should not automatically be extended to every PTFE-key stopcock in the category.

What is confirmed for the glass-key burette stopcock?

Burette Stopcock JL-SCSAS-1659 is listed as a straight-through glass-key model in a stated size of 2 mm. The product page does not specify the body material, taper, retaining mechanism, replacement-key availability or dimensional tolerance.

A quotation request should include:

• Product code JL-SCSAS-1659
• Listed size: 2 mm
• Required quantity
• Burette connection details
• Required body material
• Key-taper requirement
• Packing and documentation requirements

The construction details published for JL-SCSAS-1658 should not be applied to this glass-key model without separate confirmation.

Which valve-type and right-angle stopcocks are listed?

Valve Type Stopcock JL-SCSAS-1660 and the right-angle product JL-SCSAS-1661 are both listed with PTFE keys in sizes 2 mm and 4 mm. The second product is published as “Value Type Stopcocks, PTFE Key, Right Angle,” which should be checked for a possible naming error.

The two listings confirm:

Body material, valve geometry, bore definition, connection dimensions and operating limits are not stated. Buyers should quote the full product code and configuration.

Which double-oblique stopcocks are available?

Double-oblique stopcocks are listed in borosilicate glass with either a PTFE key or glass key. Both configurations are offered in stated sizes of 2 mm and 4 mm.

The products are:

• JL-SCSAS-1662 — Borosilicate glass with PTFE key
• JL-SCSAS-1663 — Borosilicate glass with glass key

The online listings do not provide connection angle, overall dimensions, tube diameter, taper, retaining mechanism or pressure and vacuum limits.

Buyers should state the key material, size and quantity and request a technical drawing where the stopcock must match an existing apparatus.

Which T-bore stopcocks are available?

T-bore stopcocks are listed in borosilicate glass with PTFE-key and glass-key configurations. Both JL-SCSAS-1664 and JL-SCSAS-1665 are offered in stated sizes of 2 mm and 4 mm.

The products are:

• JL-SCSAS-1664 — T bore, borosilicate glass, PTFE key
• JL-SCSAS-1665 — T bore, borosilicate glass, glass key

The pages do not provide port orientation, bore definition, external tube dimensions, taper or retaining details. A buyer requiring the stopcock for a specific flow-routing assembly should request a dimensional drawing and confirmation of the key positions.

How do you choose between a PTFE key and a glass key?

Choose the key material from the exact apparatus or BOQ specification and then verify size, body material and retaining arrangement. The category offers PTFE-key and glass-key alternatives for straight-through, burette, double-oblique and T-bore configurations.

Only JL-SCSAS-1658 provides detailed PTFE-key information, including self-lubricating operation, interchangeability and a plastic screwthread retaining device.

For other products, request confirmation of:

• Key and body materials
• Stopcock taper
• Bore size
• Retaining mechanism
• Replacement-key availability
• Chemical compatibility
• Operating-temperature limits
• Pressure or vacuum suitability

Selection should not be based on key material alone when dimensional compatibility is required.

What should institutional and tender buyers specify?

Institutional and tender buyers should provide the complete product code, size or reference, quantity, destination and all mandatory technical requirements. This is important because several products share the same stated size but differ in flow geometry or key material.

Include:

• Tender or project reference
• JL-SCSAS product code
• Product description
• Size, cone size or washer reference
• PTFE-key or glass-key requirement
• Straight-through, right-angle, double-oblique or T-bore configuration
• Required material and dimensions
• Quantity
• Packing and marking instructions
• Delivery country
• Inspection or documentation requirements

Jlab Export states that buyers can order through an enquiry process and that institutional supplies may include compliance documentation and tender support.

Product Types

Selection Criteria

Jlab Export Links

• Jlab Export Home
• View Product Categories
• Screw Caps, Stoppers and Stopcocks
• Laboratory and TVET Tender Supply
• About Jlab Export
• Frequently Asked Questions
• Contact Jlab Export

Frequently Asked Questions

How many products are listed in this category?

The category contains 15 products with codes from JL-SCSAS-1651 to JL-SCSAS-1665. The range covers caps, washers, rings, fittings, stoppers and multiple straight-through, valve, right-angle, double-oblique and T-bore stopcock configurations.

What straight-through stopcock sizes are available?

The standard PTFE-key and glass-key straight-through stopcocks are listed in sizes of 2, 4, 6, 8 and 10 mm. The pages do not define the stated measurement, so buyers should confirm whether it refers to the bore or another dimension.

Which sizes are available for closed-end stoppers?

Closed-end Stopper JL-SCSAS-1655 is listed in B10, B14, B19, B24, B29 and B34 cone sizes. Stopper material, length, tolerance and packing quantity are not provided and should be requested before procurement.

What PTFE washer references are listed?

PTFE Washer JL-SCSAS-1652 is listed in Bibby references QW13/6, QW18/7, QW24/6, QW24/9, QW24/11, QW28/6, QW28/11 and QW28/18. Buyers should provide the complete reference and confirm its dimensions.

What colours are available for the rubber ring?

Rubber Ring JL-SCSAS-1653 is listed in white, black and red. The page does not state ring dimensions, rubber composition, hardness, temperature rating or chemical resistance.

What features are stated for the PTFE-key burette stopcock?

JL-SCSAS-1658 is described as borosilicate glass with a polished barrel, self-lubricating interchangeable PTFE key, plastic screwthread retaining device and 1:10 taper. Its available size is not provided.

Are both PTFE-key and glass-key T-bore stopcocks available?

Yes. JL-SCSAS-1664 has a PTFE key and JL-SCSAS-1665 has a glass key. Both are described as borosilicate-glass T-bore stopcocks in 2 mm and 4 mm sizes.

Are product-specific certifications confirmed?

No product-specific certificates are attached to the individual listings. Jlab Export publishes manufacturer-stated company certification and standards claims, but their validity, scope and applicability to each JL-SCSAS product must be verified before publishing or procurement.

Request a Quote

Request current sizes, technical drawings, material specifications, replacement-part details, quantity-based pricing, documentation and export-packing information.

Request a Quote

Request Catalogue