Stopper, PTFE
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Item Joint CS-S112942 29/42 CS-S113445 34/45 CS-S114550 45/50 Our Color Coded PTFE Stoppers with ergonomic red handles are premium lab-grade sealing accessories engineered for standard laboratory flasks and ground glass joint glassware. Available in 14/20 and Size 16 specifications, these solid PTFE taper stoppers feature a user-friendly grip handle and distinct color coding for effortless sorting and identification. Combining excellent PTFE chemical inertness and anti-freezing performance, these stoppers solve common lab issues such as joint jamming, corrosion contamination, and messy equipment management, delivering reliable sealing for daily laboratory operations.
Standard Taper Fit for Universal Laboratory Glassware
These PTFE solid stoppers adopt a professional standard taper design, perfectly compatible with most conventional laboratory flasks and ground glass joint equipment. Precision-machined to 14/20 and Size 16 standard dimensions, the stoppers deliver a tight, secure fit for stable sealing, effectively preventing liquid leakage, gas volatilization, and external dust contamination during sample storage, reaction, and standing processes. The consistent taper structure ensures seamless assembly and disassembly for daily lab use.
Red Color-Coded Handle for Fast Identification & Grip Control
Equipped with a bright red color-coded polyethylene handle, these PTFE stoppers enable quick visual classification, sorting, and inventory management in multi-specification lab scenarios. The ergonomic extended handle design provides comfortable, non-slip gripping, allowing users to install and remove the stopper effortlessly without slipping or touching the sealing part. This color-coded system greatly improves laboratory organization efficiency and avoids cross-specification misuse.
Premium PTFE Material with Excellent Anti-Freezing & Corrosion Resistance
The main stopper body is crafted from high-purity PTFE material with outstanding chemical stability and full inertness. It resists erosion by strong acids, alkalis, organic solvents, and various corrosive laboratory reagents, never reacting with experimental samples or causing contamination. A key advantage of these PTFE stoppers is their excellent anti-freezing property, which prevents the stopper from sticking and locking in ground glass joints, eliminating the trouble of difficult disassembly after long-term experimental use compared with traditional glass stoppers.
Detachable Handle Design for Safe Cleaning & High-Temperature Use
Featuring a practical detachable structure, the colored polyethylene handle can be easily separated from the PTFE stopper body. Note: Please remove the PE handle before cleaning or exposing the stopper to temperatures above 80°C to avoid handle deformation, aging, or damage. This detachable design allows the PTFE body to support high-temperature cleaning, sterilization, and heating processes, ensuring thorough sanitation and extending the service life of both the stopper and handle.
Durable & Reusable for Long-Term Lab Use
The solid PTFE stopper body boasts superior wear resistance, aging resistance, and structural stability. It maintains stable sealing performance after repeated assembly and disassembly, with no deformation, cracking, or sealing failure. The smooth non-stick surface is easy to clean and free of residue adsorption, supporting long-term cyclic reuse. It is a cost-effective alternative to fragile glass stoppers and easily corroded plastic stoppers.
Wide Laboratory Applications
Ideal for daily laboratory sealing work, these color-coded PTFE stoppers are widely used in chemical laboratories, pharmaceutical research, environmental testing, food analysis, and scientific research institutions. They are perfect for sealing round-bottom flasks, flat-bottom flasks, three-necked flasks, and other ground glass joint labware, suitable for sample storage, static reaction, solution cultivation, and various conventional experimental processes.
Core Product Features at a Glance:
- Available in standard 14/20 and Size 16 specifications for universal lab glassware
- Bright red color-coded handle for quick identification and easy sorting
- Ergonomic grip handle for effortless installation and removal
- High-purity PTFE body, fully chemically inert and corrosion-resistant
- Unique anti-freezing performance, no sticking in ground glass joints
- Detachable PE handle (remove above 80°C for safe high-temperature operation)
- Standard taper design for tight sealing and leak-proof performance
- Smooth non-stick surface, easy to clean and reusable
- Durable solid construction for long-term laboratory repeated use
Stopper, PTFE
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