Round Silicone Stopper for Test Tubes and Erlenmeyer Flasks - Piercable and Dense

This durable silicone stopper is designed to fit snugly into test tubes and Erlenmeyer flasks, providing a reliable seal for laboratory applications. Its dense, high-quality material ensures a secure fit while allowing for easy piercing when necessary. Ideal for scientific experiments and chemical storage, this stopper is a versatile and essential tool for ensuring safety and maintaining the integrity of your samples. Material: Stainless steel Manufacture country: China Instructions included: No