
DWK Life Sciences 286113808
(NS7/16, pointed, hex)Hexagonal hollow ground glass stopper for laboratory glassware, size NS7/16, pointed, with DG-joint quality, made of Duran glass.
Explore resilient seals for secure flask closures, chemical-resistant types for solvent storage, works with silicone and PTFE septa, and more.

Hexagonal hollow ground glass stopper for laboratory glassware, size NS7/16, pointed, with DG-joint quality, made of Duran glass.

Hexagonal hollow glass stopper, pointed ground, for closing ground flasks or lab bottles, durability with DG-joint quality.

Ground glass stopper with hexagonal grip, NS14/23 size, suitable for closing ground glassware such as flasks and bottles, 58 mm length.

Hexagonal hollow stopper for glassware, ground NS19/26, Duran glass, DG-joint quality, suitable for flasks and bottles.

Hexagonal hollow stopper for glassware with ground DG-joint NS24/29, made of Duran glass. Suitable for flasks and bottles, precision ground.

Hexagonal hollow stopper for glassware, ground size NS29/32, made of Duran glass, suitable for flasks and laboratory bottles.

Hexagonal hollow stopper for glassware, GS ground size NS45/40, pointed, made from Duran glass.

Silicone cap wad for GL 32 screwthread caps, autoclavable, 29 mm diameter, 2 mm thickness, heat resistant up to 200°C.
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“Spyndl saved us over 500 hours a year and reduced sourcing time by 85%. It's our go-to for reliable lab quotes.”
“We eliminated costly mismatches and saw a 30% cost reduction in our pipette orders. Centralization is a game-changer.”
“30% savings, zero guesswork—Spyndl's multi-quote approach allows us to choose the best offer every time.”
“Spyndl saved us over 500 hours a year and reduced sourcing time by 85%. It's our go-to for reliable lab quotes.”
“We eliminated costly mismatches and saw a 30% cost reduction in our pipette orders. Centralization is a game-changer.”
“30% savings, zero guesswork—Spyndl's multi-quote approach allows us to choose the best offer every time.”
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Rubber Stoppers are essential components in laboratories across biotechnology, life sciences, chemical analysis, medical research and R&D. Designed for sealing vials, bottles and reaction vessels, high-quality rubber stoppers ensure contamination control, solvent resistance and secure closures for sensitive workflows. On Spyndl’s marketplace you can access a broad selection of materials, sizes and certifications sourced from an ever-growing network of Swiss and EU vendors, brands and manufacturers who are continuously onboarding new suppliers to meet evolving lab standards.
Buyers on Spyndl benefit from two straightforward purchasing options: order instantly at pre-negotiated prices for immediate savings, or request custom negotiation and let Spyndl secure tailored quotes on a case-by-case basis for specialized requirements. Explore complementary items such as crimp caps and alternative sealing solutions to complete your setup: see Crimp Caps and sibling sealing options at Silicone Stoppers.
Rubber Stoppers are widely used in biotech workflows for secure vial sealing during sample storage and transport, in life sciences labs to close culture bottles and reagent containers, and in chemical analysis to prevent solvent loss and contamination during synthesis or chromatography. In medical research, they provide reliable closures for diagnostic vials and stability studies. For laboratories needing secure seals for pressurized or inert-gas work, the correct material choice - nitrile, silicone or butyl - can be critical for safety and data integrity.
Specific workflows often combine stoppers with related closures and consumables: researchers preparing samples for centrifugation or long-term storage will pair stoppers with vials and caps to maintain sterility and compatibility. For solutions requiring crimp sealing or specialty septa, consider related categories like Screw Caps and PTFE Septa to match your application needs.
Material options define much of stopper performance. Silicone stoppers offer good temperature tolerance and inertness for many life sciences applications, whereas nitrile and butyl stoppers provide enhanced chemical resistance for aggressive solvents used in chemical rubber stoppers workflows. PTFE-faced or coated variants combine chemical resistance with a clean interface for sensitive analytical work. When selecting Rubber Stoppers, labs in biotech, chemical, medical and R&D sectors evaluate hardness (shore A), pierceability for septa-compatible designs, and certification for bioburden and endotoxin when aseptic handling is required.
Design considerations include sizes tailored to standard vial necks and bottles, tapered profiles for tight seals, and pre-punched or pre-slit options for septa access. For automated workflows or high-throughput labs, compatibility with robotic loaders and crimping tools is important - pairing stoppers with appropriate caps and septa helps maintain sample integrity across processing steps. Spyndl’s selection highlights options optimized for temperature cycling, solvent exposure, and headspace control important to both analytical and preparative labs.
Accessories and complementary consumables extend functionality: PTFE septa are ideal for needle access and gas-tight applications, while screw caps and crimp caps provide mechanical securing when combined with stoppers. For labs that require both sterilization and chemical resistance, choosing the correct combination of materials and finishes ensures reproducible outcomes in biotech rubber stoppers and chemical rubber stoppers applications.
Spyndl aggregates a curated catalog of Rubber Stoppers and related closures from Swiss and EU vendors, brands and manufacturers, ensuring you find options suitable for regulated and research-grade environments. The platform makes it easy to compare specifications, certifications and pricing; you can order instantly at pre-negotiated prices for quick procurement, or request Spyndl to negotiate custom prices and tailored offers for large or specialized purchases. This dual approach supports both routine consumable buying and complex sourcing for regulated projects.
Procurement teams and lab managers benefit from transparent vendor information, competitive quotes, and no fees or commitments. Whether you need stoppers for routine storage, sensitive analytical assays, or specialized R&D setups, Spyndl’s marketplace connects you to the right suppliers while keeping purchasing efficient and controllable. For matching closures and related labware, review compatible categories like Screw Caps and sibling stopper options at PTFE Septa.
Spyndl streamlines procurement by aggregating vendor offers, detailed technical data and certification documents so you can validate material compatibility and regulatory compliance before ordering. The catalog is expanding continuously as new Swiss and EU suppliers join, widening choices for life sciences equipment and laboratory teams seeking robust supply chains for consumables such as Rubber Stoppers. If your project requires volume discounts, custom materials, or bespoke sizes, Spyndl’s negotiation service works on a case-by-case basis to secure tailored, competitive pricing.
Improve turnaround and reduce administrative overhead by consolidating orders and leveraging Spyndl’s transparent comparison tools. For direct complements to stoppers, consider related categories and accessories available through the marketplace, including crimp cap solutions and alternative sealing options at Crimp Caps and performance-oriented septa at Silicone Stoppers. Spyndl helps labs in biotech, life sciences, chemical, medical and R&D sectors source the right scientific instruments and laboratory equipment with confidence.