Large Solid Rubber Stoppers 4-Pack Enjoyist #9 Black 45mm/37mm/30mm

Description

Product Overview

Enjoyist’s Large Solid Rubber Stoppers are engineered from premium‑grade rubber that balances flexibility with strength, delivering a dependable seal across a broad spectrum of applications. The stoppers feature a uniform, smooth surface that resists cracking, tearing, and chemical degradation, making them suitable for both routine laboratory procedures and more demanding industrial processes. Each stopper is precisely machined to a #9 size specification, offering a top diameter of 45mm, a bottom diameter of 37mm, and a length of 30mm, which aligns with standard glassware dimensions used in chemistry, biology, and environmental testing.

The 4‑pack configuration provides ample inventory for laboratories that require multiple spares, ensuring that a replacement is always on hand when a stopper is lost, damaged, or needs to be swapped out for a different experiment. The black coloration not only offers a professional appearance but also helps users quickly identify the stopper type among a variety of lab accessories. Packaging dimensions of 4.29 x 3.39 x 1.3 inches keep the product compact and easy to store on shelves or in drawer compartments.

Usage

These rubber stoppers excel in laboratory settings where airtight or watertight sealing is critical. They are ideal for sealing flasks, beakers, test tubes, and specialized reactors during titration, distillation, filtration, and incubation processes. The robust rubber material tolerates a wide temperature range, from sub‑zero storage conditions to moderate heating, allowing users to perform reactions that involve heating or cooling without compromising the seal.

Beyond the lab, the stoppers serve well in household and industrial contexts. Homebrew enthusiasts can use them to seal fermentation vessels, while workshop technicians may employ them as protective caps for pneumatic valves or as plugs for small-diameter pipe ends. Their chemical resistance makes them suitable for handling solvents, acids, and bases, providing a versatile solution for anyone needing a reliable, reusable stopper.

Why Choose Us

Choosing Enjoyist means selecting a brand that prioritizes quality control and customer satisfaction. Each batch of rubber is tested for hardness, elasticity, and dimensional accuracy to meet strict industry standards. The company’s commitment to consistent manufacturing processes reduces variability, ensuring that every stopper fits perfectly and performs reliably, batch after batch.

In addition to product excellence, Enjoyist offers responsive after‑sales support. Customers can reach out for assistance with product selection, troubleshooting, or replacement requests, and the company’s knowledgeable staff will provide prompt, helpful guidance. This level of service, combined with a high average customer rating of 4.5 stars from over one hundred reviews, underscores the brand’s dedication to delivering value and confidence to its users.

Key Features

• Premium rubber material delivers long‑lasting durability and chemical resistance for demanding applications.
• Exact #9 dimensions (45mm top, 37mm bottom, 30mm length) ensure a secure fit on standard laboratory glassware.
• Black color provides easy visual identification and a professional appearance in any setting.
• Convenient 4‑pack quantity reduces the need for frequent reordering and keeps spares readily available.
• Responsive customer support and a strong track record of positive reviews guarantee peace of mind.

FAQ

What types of chemicals can these rubber stoppers safely handle?

The premium rubber used in Enjoyist stoppers is resistant to most common laboratory chemicals, including dilute acids, bases, and organic solvents. For highly aggressive chemicals, it is recommended to verify compatibility with the specific formulation of the rubber.

Can the stoppers be autoclaved for sterilization?

Yes, the stoppers can withstand standard autoclave cycles (121°C, 15 psi) without losing their elasticity or shape, making them suitable for reuse in sterile environments.

Are the dimensions consistent across all units in the pack?

Each stopper in the 4‑pack is manufactured to the same precise #9 specifications, ensuring uniform performance and interchangeable use across all items.

What is the recommended storage condition for maintaining stopper quality?

Store the stoppers in a cool, dry place away from direct sunlight and extreme temperatures. Keeping them in their original packaging helps protect them from dust and contaminants.

Do you offer other sizes or colors for these rubber stoppers?

Enjoyist provides a full range of rubber stoppers from #000 to #10 in various colors, including clear and blue. Customers can select the size and color that best fits their specific application needs.