Red Natural Rubber Perforated Stopper

ASTIKs
Perforated stopper moulded from natural rubber, red. Designed to hold glass tubing, thermometers, rods and similar accessories in flasks, test tubes and laboratory bottles while maintaining vessel closure. Natural rubber provides good elasticity and recovery — conforms to the neck without permanent deformation over time. Resistant to compression and incidental contact with common laboratory reagents. A reliable, cost-effective solution for distillation, fermentation and any assembly requiring a perforated seal.

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SKU: 28244
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Red Natural Rubber Perforated Stopper

Single-bore stopper moulded from natural rubber, red. Accepts thermometers, glass tubing, rods or adapters while keeping the vessel closed. Red colouration allows quick identification on the bench when working alongside stoppers of other types or materials.

Features

  • Material: Natural rubber
  • Colour: Red
  • Type: Perforated — single central bore for tubing or accessory passage
  • Elasticity: High — conforms to vessel neck and recovers to original shape without permanent set

Typical Applications

Standard choice for simple distillation setups, gas dispersion, fermentation and any assembly requiring a tube or thermometer to pass through a closed vessel. Compatible with flasks, test tubes, bottles and laboratory vessels with standard-taper or straight necks.

Technical Data

  • Material: Natural rubber
  • Colour: Red
  • Configuration: Perforated

Usage Notes

Before inserting the accessory, lightly lubricate the tube or rod with water or glycerol to ease passage without stressing the stopper. Not suitable for aggressive organic solvents or pressurised work — consider silicone or PTFE stoppers for those conditions.

Brand ASTIKs
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