Laboratory Grade Rubber Stoppers Lhazemu 30 Tapered Bungs Black 11

Description

Product Overview

The Lhazemu Laboratory Grade Rubber Stoppers set is engineered to meet the demanding needs of modern scientific workspaces. Containing 30 meticulously crafted bungs, the collection spans eleven essential tapered sizes ranging from #000 through #8, delivering a comprehensive solution for a wide array of glassware, including flasks, test tubes, bottles, and specialized containers. Each stopper is fabricated from high‑density, non‑porous black rubber that resists degradation when exposed to non‑aggressive chemicals, concentrated solutions, and routine cleaning agents. The material choice ensures a durable, long‑lasting seal that maintains its elasticity over repeated autoclave cycles and temperature fluctuations. The solid construction eliminates any central aperture, guaranteeing a leak‑proof barrier that protects both samples and the environment from contamination. Packaged in a compact box measuring 6.06 x 3.86 x 1.69 inches and weighing 13.76 ounces, the set is conveniently portable for field work, classroom labs, and industrial research facilities. The assortment includes two pieces each of sizes #000 to #6, and a single piece each of the larger #7 and #8 sizes, providing users with the flexibility to select the exact stopper required for each application without excess inventory. Manufactured by Lhazemu, a reputable supplier known for consistent quality in laboratory consumables, this product has earned a solid customer rating of 4.4 out of 5 stars based on 22 reviews, reflecting its reliability and user satisfaction. The set is positioned as a top‑ranked item within the Lab Rubber Stoppers category, reinforcing its status as a trusted choice for professionals seeking precision and performance.

Usage

Designed for versatility, these rubber stoppers excel in a multitude of laboratory environments. In academic settings, instructors can rely on the assorted size range to demonstrate proper sealing techniques across a spectrum of apparatuses, from small graduated cylinders to large reaction vessels. Research laboratories benefit from the chemical resistance of the high‑density rubber, allowing the stoppers to be employed in experiments involving solvents, acids, and bases without compromising integrity. The leak‑proof design is especially valuable in analytical chemistry, where maintaining a closed system is critical for accurate measurements and preventing sample loss. Field technicians conducting on‑site analyses appreciate the compact packaging, which facilitates easy transport to remote locations while still providing the necessary range of stopper sizes for diverse sample containers. Additionally, the black coloration offers a visual cue for proper orientation and helps conceal any minor residues that may accumulate during routine use, simplifying cleaning procedures. Whether used in routine titrations, microbiological cultures, or specialized synthesis processes, the Lhazemu rubber stoppers deliver consistent performance, reducing the risk of contamination and ensuring experimental reproducibility.

Why Choose Us

Choosing the Lhazemu rubber stopper set means selecting a product backed by rigorous quality assurance and a commitment to customer satisfaction. Each stopper undergoes a multi‑stage inspection process that verifies dimensional accuracy, material uniformity, and seal integrity, ensuring that every piece meets exacting laboratory standards. The brand’s reputation for durability is reinforced by the use of high‑density rubber that retains its elasticity even after repeated autoclaving, extending the service life of each stopper and reducing the need for frequent replacements. Lhazemu also provides responsive after‑sales support; any issues related to product performance are addressed promptly, reflecting the company’s guarantee of reliability. By offering a comprehensive size range in a single, cost‑effective package, the set eliminates the logistical challenges of managing multiple inventory items, streamlining procurement for laboratories of any scale. The combination of superior material properties, precise manufacturing, and dedicated customer service positions this product as a prudent investment for institutions seeking to maintain high standards of experimental accuracy and safety.

Key Features

• Complete size range from #000 to #8 eliminates the need for multiple purchases
• High‑density black rubber resists chemicals and maintains elasticity after autoclave cycles
• Solid, hole‑free design ensures a leak‑proof seal for reliable containment
• Compact 30‑piece packaging simplifies storage and transport for on‑site work
• Dedicated customer support and product guarantee provide peace of mind

FAQ

What chemicals are these rubber stoppers compatible with?

The stoppers are made from high‑density rubber that is resistant to non‑aggressive chemicals, including most acids, bases, and organic solvents commonly used in laboratory settings. They are not recommended for highly corrosive or aggressive chemicals such as concentrated hydrofluoric acid.

Can the stoppers be autoclaved?

Yes, the rubber material is designed to withstand standard autoclave temperatures and pressures, allowing you to sterilize the stoppers without loss of elasticity or sealing performance.

How do I select the correct size for my glassware?

Measure the inner diameter of the opening you wish to seal and compare it to the size markings (#000‑#8). The tapered design ensures a snug fit; the set includes multiple sizes so you can choose the one that provides the tightest seal without forcing the stopper.

Is there a warranty or return policy?

Lhazemu offers a product guarantee that covers any defects in material or workmanship. If you encounter any issues, contact the seller for assistance, and they will arrange a replacement or refund according to the return policy.

Are these stoppers suitable for educational use?

Absolutely. The diverse size range and durable construction make them ideal for classroom demonstrations, student experiments, and training labs where reliability and safety are paramount.