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Explore threaded closures with PTFE liners for chemical resistance, tamper-evident and vented types, compatible with vials and bottles, and more.

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DWK Life Sciences Duran Screw Cap PP, TPE Seal 299901204

DWK Life Sciences Duran Screw Cap

(PP, TPE Seal)

Black screw cap for culture tubes made of polypropylene with TPE sealing, GL14 thread, pack of 100.

Price unavailable
DWK Life Sciences Screw Cap for Culture Tubes PP, TPE seal, GL18 299901307

DWK Life Sciences Screw Cap for Culture Tubes

(PP, TPE seal, GL18)

Screw cap for culture tubes made of polypropylene with TPE seal, black color, GL18 thread, 100 pcs pack.

Price unavailable
DWK Life Sciences Duran Screw Cap GL 45 with temperature probe holder Duran GL45, probe holder 299912801

DWK Life Sciences Duran Screw Cap GL 45 with temperature probe holder Duran

(GL45, probe holder)

Stainless steel temperature probe holder fits into GL 45 caps, adjustable for 6.0 mm probes, compatible with Duran bottles up to 1000 mL.

Price unavailable
DWK Life Sciences W240820 Black W240820

DWK Life Sciences W240820

(Black)

Screw caps for Wheaton vials, phenolic with black color, autoclavable, ND13 size, 250 units.

Price unavailable
DWK Life Sciences Wheaton Vial Screw Cap ND13, Black W240821

DWK Life Sciences Wheaton Vial Screw Cap

(ND13, Black)

Black phenolic screw caps for Wheaton vials, autoclavable, 1000 units, ND13 size, rubber/PTFE septa.

Price unavailable
DWK Life Sciences Wheaton neck ND15, white, PP W240832

DWK Life Sciences Wheaton neck

(ND15, white, PP)

Screw caps for Wheaton Vials, ND15, white, polypropylene, with PTFE/Silicone septa, pack of 250.

Price unavailable
IKA CC-1 Ersatzkappen 6 caps 0020107043

IKA CC-1 Ersatzkappen

(6 caps)

Set of 6 CC-1 bottom closure caps for ELVAS-1 and DINS-1 adapter chambers.

Price unavailable
IKA IKA Pro-Seal Vakuum-50mbar 0040007151

IKA IKA Pro-Seal

(Vakuum-50mbar)

IKA Pro-Seal, vakuumfähiger Schraubverschluss, kompatibel mit ElectraSyn 2.0 Glasbehältern, bis 50 mbar, chemisch verträglich, inklusive FKM O-Ringe.

Price unavailable
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“We eliminated costly mismatches and saw a 30% cost reduction in our pipette orders. Centralization is a game-changer.”

Loic K.
Lab Manager

“30% savings, zero guesswork—Spyndl's multi-quote approach allows us to choose the best offer every time.”

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Discover High-Quality Screw Caps for Research and Industry

Screw Caps are an essential consumable in modern laboratories, providing reliable closures and chemical-resistant seals for vials, bottles and containers across biotechnology, life sciences and chemical workflows. In biotech and clinical environments the right closure ensures sample integrity, reduces contamination risk and supports reproducible results - making Screw Caps a small part of your setup with an outsized impact. Spyndl’s marketplace connects you to a growing selection of materials, sizes and thread standards designed for diverse lab requirements.

On Spyndl you’ll find an ever-growing network of Swiss and EU vendors, brands and manufacturers continuously onboarding new suppliers to expand choice and availability. You can order Screw Caps instantly at pre-negotiated prices for immediate savings, or let Spyndl negotiate custom prices on a case-by-case basis for tailored offers and personalized quotes with transparency and no fees or commitments. Explore complementary closures such as Crimp Caps and compatible vials at Vials to complete your supply chain.

Applications of Screw Caps in Research and Industry

Screw Caps are widely used in biotech labs for secure storage of samples, reagents and standards, and they are integral to life sciences workflows where leak-free containment matters. In chemical analysis and synthesis labs, chemical-resistant materials extend shelf life for hazardous or reactive liquids; chemical screw caps protect against solvent permeation and maintain sample purity. For medical research and clinical testing, medical screw caps enable safe transport and archiving of diagnostic specimens under controlled conditions.

Common applications include sealing chromatography vials, sample transport bottles, and tubes for centrifugation and storage. For workflows that combine sample handling and downstream processing, pairing closures with the right containers improves throughput and traceability - see compatible centrifuge and tube options such as Centrifuge Tubes and related closure types like Snap Caps. Whether used in R&D or regulated lab environments, these closures support rigorous testing and reproducible outcomes.

Types and Features of Screw Caps

Material choice is a primary differentiator for Screw Caps. Options commonly include polypropylene, HDPE, PTFE-lined seals and elastomeric liners that offer varying degrees of chemical resistance and temperature stability. PTFE-lined screw caps and specialty polymer caps are preferred in chemical labs where aggressive solvents require inert contact surfaces; chemical screw caps with PTFE liners minimize adsorption and leaching.

Thread standards, tamper-evident designs and liner types determine compatibility and performance. Lab teams select thread pitch and size to match vials and bottles, and choose sealing liners for applications that demand leak-proof storage or sterile barriers. In biotech contexts, biotech screw caps with siliconized liners and sterile-ready packaging are commonly used to prevent contamination during cell culture and molecular workflows. For applications requiring autoclave or freezer stability, look for caps rated for extreme temperatures.

Design features also include color-coding for inventory control, pressure-relief caps for volatile samples, and versions compatible with automation or robotic handlers. These screw caps tools improve handling efficiency and reduce sample mix-ups in busy labs, making them valuable across life sciences research and R&D operations. For packaging and accessory compatibility, pairing closures with the right vials and tubes is critical to maintain sample integrity throughout the experimental lifecycle.

Why Spyndl’s Marketplace for Screw Caps?

Spyndl offers transparent procurement for Screw Caps by aggregating offers from an expanding roster of Swiss and EU suppliers, ensuring access to competitive quotes without platform fees or commitments. Our marketplace helps purchasing teams compare specifications, certifications and lead times at a glance, so lab managers can select the best option for their quality and regulatory needs. Whether you need bulk stock for routine assays or specialized closures for regulated studies, Spyndl facilitates both instant orders at negotiated prices and bespoke negotiations for unique requirements.

By leveraging Spyndl you gain access to tailored sourcing and rapid onboarding of new vendors, improving supply resilience and reducing procurement cycles. Look at complementary categories like Centrifuge Tubes and sibling closure types Snap Caps to configure full solutions for your lab’s storage and sample handling needs.

Maximize Efficiency with Spyndl’s Procurement Solutions

Spyndl streamlines procurement of Screw Caps through consolidated product data, standardized specifications and vendor-managed inventory options. Our platform reduces administrative overhead by presenting detailed technical information and compliance documents side-by-side, speeding evaluation for regulated projects in biotech, chemical and medical research. For teams focused on timely experiments and reproducible results, quick access to the right closure reduces downtime and supports robust workflows.

As our catalog grows, Spyndl continues to add specialized closures and accessories from trusted manufacturers across Switzerland and the EU, and we offer custom negotiation for high-volume or specialized needs. Whether you are procuring for an academic lab, a clinical facility or an industry R&D center, Spyndl helps you secure the right screw caps for biotechnology and routine lab use with clear pricing, competitive quotes and flexible purchasing options.