Solid, 1-hole and 2-hole stoppers in assorted sizes.

• Superior grade of rubber
• Soft, resilent, and durable
• Low sulfur content
• Size numbers molded onto the top
• All stoppers are 25mm long
• Aligned with GLOBE protocols

Designed to stay pliable over long period of time, these stoppers can withstand temperatures from –25 to 70°C (–13 to 158°F). Ideal for use with nonaggressive or concentrated solutions.