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Natural Rubber Solid Corks
General Labware

Natural Rubber Solid Corks

Model GI-2244 In stock

Resistant to temperatures ranging from -40 to 130°C. Stopper measures 28mm in length, has a base diameter measuring 21mm, and a top diameter measuring 24mm.

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Detailed information

Catalog No. Cork Number Bottom Top Height
(in MM) (in MM) (in MM)
±.2mm ±.2mm ±.2mm
2244/1 0 6 9 16
2244/2 0 8 10.5 20
2244/3 0 9 13 15.5
2244/4 1 11 14 18.5
2244/5 2 13 16.5 20
2244/6 3 14 19 21
2244/7 4 15 21 22
2244/8 5 17.5 22.5 23
2244/9 6 20 24.5 24
2244/10 7 20 26 27.5
2244/11 8 21 26.5 27.5
2244/12 9 21.5 28 31
2244/13 10 26 30 33
2244/14 11 29 33 32
2244/15 12 30 34.5 34.5
2244/16 13 31 38.5 37
2244/17 14 32 41.5 45.5
2244/18 15 38 42 40.5
2244/19 16 35 45 36.5
2244/20 17 40 49.5 40.5
2244/21 18 48 53.5 33.5
2244/22 19 44 58 45
2244/23 20 51 60 56.5
2244/24 22 50 65 41
2244/25 23 59 72 42

 Natural Rubber Solid Corks are high-quality sealing stoppers designed for laboratory glassware and general scientific use. Made from durable natural rubber, they create a secure, leak-free closure for tubes, flasks, and containers. Their temperature-resistant and chemically stable design ensures reliability in routine lab procedures and specialized industrial workflows.

 

 Key Features

  • Premium natural rubber construction for excellent elasticity and sealing strength
  • Temperature resistance from –40°C to +130°C for versatile lab use
  • Smooth, tapered design ensures a tight, uniform fit in standard glassware
  • High mechanical durability—resistant to cracking, drying, and deformation
  • Non-reactive with common laboratory reagents
  • Available in multiple sizes for universal compatibility
  • Ideal for long-term storage, transport, and controlled experiments

 

Material Specifications

  • Material: High-grade natural rubber
  • Thermal Properties: Stable sealing performance from –40°C to 130°C
  • Chemical Properties: Resistant to dilute acids, bases, and common solvents
  • Mechanical Properties: Excellent flexibility, compression strength, and tear resistance
  • Standards: Manufactured according to general laboratory rubberware guidelines (ISO / DIN compliant)

 

 Technical Specifications

  • Length: 28 mm
  • Base Diameter: 21 mm
  • Top Diameter: 24 mm
  • Tolerance: Standard molded rubberware tolerance for consistent fit
  • Sizes: Available in multiple stopper numbers (various diameters and lengths)
  • Accessories: None required; compatible with standard laboratory glassware

 

Handling & Precautions

  • Store in a cool, dry environment away from direct sunlight
  • Clean with mild detergent; avoid strong organic solvents
  • Do not expose to flames or high-temperature sterilization beyond 130°C
  • Avoid prolonged contact with oils or oxidizing chemicals
  • Replace if signs of hardening, deformation, or surface cracks appear
  • Ensure proper sizing to achieve secure and safe sealing

 

Applications

  • General laboratory sealing of flasks, test tubes, and sample containers
  • Chemical, biological, and pharmaceutical laboratories
  • Academic and research institutions for routine experiments
  • QC/QA laboratories for controlled sample storage
  • Industrial testing labs requiring reliable closures
  • Ideal for color-coded workflows, storage stability, and leak prevention
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