Rubber Stoppers 5-Pack Enjoyist Lab Size #7 37mm x 28mm x 30mm Black

Description

Product Overview

Enjoyist’s 5‑Pack solid rubber stoppers are engineered to provide a reliable, leak‑free seal for a broad spectrum of laboratory glassware and equipment. Constructed from premium‑grade rubber, each stopper offers excellent chemical resistance and maintains its elasticity across a wide temperature range, ensuring consistent performance in demanding environments. The stoppers feature a uniform cylindrical shape with a smooth surface finish that prevents scratching or damaging delicate glassware during insertion or removal. Their robust design accommodates repeated use without deformation, making them a cost‑effective solution for laboratories that require dependable sealing components on a regular basis.

Usage

These rubber stoppers are versatile enough to serve in academic research labs, industrial quality‑control stations, and even home‑based scientific hobbyist setups. In a typical laboratory setting, they fit securely onto flasks, beakers, and test tubes ranging from small analytical vessels to larger reaction chambers, providing a tight seal that prevents vapor loss and contamination. For industrial applications, the stoppers can be employed on process equipment where chemical resistance and durability are critical, such as in pilot‑scale reactors or sampling ports. Home users conducting small‑scale experiments or DIY chemistry projects will also benefit from the easy‑to‑handle design and the confidence of a secure seal.

Why Choose Us

Choosing Enjoyist means selecting a brand that prioritizes material quality, precise manufacturing tolerances, and rigorous testing. Each stopper undergoes a multi‑stage quality assurance process, including dimensional verification, hardness testing, and chemical compatibility assessment, to guarantee that the final product meets exacting laboratory standards. The company’s commitment to customer satisfaction extends beyond the product itself, offering responsive support, clear documentation, and a straightforward return policy should any issue arise. By sourcing high‑grade rubber and employing controlled molding processes, Enjoyist ensures that every stopper delivers consistent performance, reducing the risk of leaks or equipment failure during critical experiments.

Key Features

• Five identical stoppers provide a convenient bulk supply for multiple experiments.
• Top diameter 37 mm, bottom diameter 28 mm, length 30 mm fits a wide range of glassware.
• Premium rubber material resists chemicals, solvents, and temperature fluctuations.
• Smooth, non‑abrasive surface protects delicate glassware during insertion and removal.
• Enjoyist offers responsive customer support and a hassle‑free replacement policy.

FAQ

What types of glassware are compatible with these stoppers?

The stoppers are designed to fit standard laboratory flasks, beakers, test tubes, and reaction vessels that have an opening matching the 37 mm top diameter. They work well with both borosilicate and standard glassware.

Can the stoppers be used with aggressive chemicals?

Yes. The premium rubber formulation provides excellent resistance to most acids, bases, and organic solvents commonly encountered in laboratory work. However, prolonged exposure to highly corrosive substances should be evaluated on a case‑by‑case basis.

Are the stoppers reusable?

Absolutely. The durable rubber material maintains its elasticity after repeated insertions and removals, allowing the stoppers to be reused many times without loss of sealing performance.

What is the recommended storage condition?

Store the stoppers in a cool, dry place away from direct sunlight and extreme temperatures. Keeping them in their original packaging helps preserve their material integrity.

Do you offer other sizes?

Yes. Enjoyist provides a full range of rubber stoppers from size #000 up to #10, allowing you to select the exact dimensions needed for any specific application.