Rubber Stoppers 19-Pack Assorted Sizes 000‑7 Enjoyist Premium Black

Description

Product Overview

The Enjoyist 19‑pack of solid black rubber stoppers is engineered to meet the demanding needs of modern laboratories. Each stopper is crafted from high‑grade, premium rubber that delivers exceptional elasticity, chemical resistance, and a secure seal across a broad temperature range. The assortment includes ten distinct sizes, ranging from the smallest #000 to the larger #7, providing comprehensive coverage for a wide variety of glassware, flasks, beakers, and test tubes. With a total of 19 pieces, the pack ensures that you have the right size on hand for every application, reducing downtime and inventory complexity.

Key specifications include a black color for easy visual identification, a cylindrical shape for uniform fit, and a compact width of 0.54 inches per stopper. The stoppers are not dishwasher safe, preserving their material integrity over repeated uses. Weighing just 11.2 ounces for the entire pack, they are lightweight yet robust, making them ideal for both stationary bench work and field‑based scientific investigations.

Usage

These rubber stoppers excel in a variety of laboratory environments. Whether you are conducting routine titrations, preparing culture media, or performing analytical chemistry assays, the stoppers provide a reliable barrier against contamination and evaporation. Their chemical compatibility makes them suitable for non‑aggressive solutions such as aqueous buffers, as well as more concentrated reagents, provided the chemicals are not highly corrosive. The assorted size range ensures a snug fit for standard laboratory glassware, including Erlenmeyer flasks, volumetric flasks, and graduated cylinders, as well as specialized equipment like reaction vessels and distillation apparatus.

In teaching labs, the clear size markings and uniform black appearance help students quickly select the appropriate stopper, fostering a smoother workflow and reinforcing best practices in laboratory safety. For quality‑controlled environments, the consistent material performance supports reproducible results, a critical factor in research and development settings.

Why Choose Us

Enjoyist stands out as a trusted manufacturer of laboratory consumables, delivering products that combine durability, precision, and cost‑effectiveness. Our rubber stoppers undergo rigorous quality control testing to verify dimensions, elasticity, and chemical resistance, ensuring each piece meets exacting industry standards. The premium rubber formulation is selected for its low permeability, reducing the risk of solvent loss and sample contamination over extended storage periods.

We are committed to sustainability and responsible manufacturing practices. Our stoppers are produced using environmentally conscious processes, and the packaging is designed for minimal waste while protecting the product during transit. Additionally, our responsive customer support team is available to address any inquiries, providing guidance on product selection, usage tips, and after‑sales assistance.

Key Features

• Premium rubber material delivers a tight, leak‑proof seal for reliable sample integrity.
• Assorted size range from #000 to #7 covers virtually all standard laboratory glassware.
• Compact, cylindrical design ensures easy insertion and removal without damaging equipment.
• Durable construction resists wear, maintaining performance through repeated use.
• Responsive customer support and hassle‑free return policy for peace of mind.

FAQ

What chemicals are compatible with these rubber stoppers?

The stoppers are suitable for non‑aggressive solutions such as water, buffers, and most organic solvents. They should not be used with highly corrosive acids or bases, as these can degrade the rubber over time.

Can the stoppers be autoclaved for sterilization?

These rubber stoppers are not recommended for autoclave sterilization because high temperatures and steam can affect the elasticity of the material. Instead, use chemical sterilization methods compatible with rubber.

How do I determine the correct size for my glassware?

Measure the inner diameter of the opening you wish to seal. Match this measurement to the corresponding stopper size (e.g., #000 fits openings up to 0.25 in, #7 fits openings up to 1.5 in). The product packaging includes a size chart for quick reference.

Is there a warranty on these stoppers?

Enjoyist offers a one‑year limited warranty against manufacturing defects. If a stopper fails due to a defect, contact our support team for a replacement.

Can I purchase additional packs to expand my inventory?

Yes, additional 19‑pack assortments are available. Bulk purchasing options and discounts are offered for large orders, making it easy to maintain a well‑stocked laboratory supply.