Black Rubber Cone Stopper, 19mm, 1 Piece

This high-quality black rubber cone stopper is perfect for sealing a variety of laboratory glassware, including flasks, test tubes, and jars. Designed for a 19mm diameter opening, this single stopper provides a secure and reliable seal. It’s manufactured from a durable, chemically and thermally resistant rubber compound (23-6-3, per GOST 7852-76), ensuring long-lasting performance and reliability.

Specifications:

• Color: Black
• Material: Chemically and thermally resistant rubber (GOST 7852-76)
• Size:
  • Diameter (large end): 23mm
  • Diameter (small end): 17mm
  • Diameter (middle): 19mm
  • Height: 30mm
• Temperature Resistance: -8°C to +80°C
• Quantity: 1 piece

Note: This product has a characteristic rubber odor. Please consider this when using in non-laboratory settings.