SES12 12" Steel Expanding Pipe Stoppers

The SES12 Steel Expanding Pipe Stopper is a robust, expandable test plug designed for temporary sealing of pipe ends in demanding welding, fabrication, and industrial piping applications. Constructed from steel with a natural rubber tyre for enhanced durability, this lightweight tool effectively blocks water, gases, and debris during installation, repairs, or testing, fitting pipes with internal diameters from 11.65" to 12.59" (296-320 mm, 12" nominal). Ideal for heavy-duty applications like prolonged immersion, elevated temperatures up to 194°F (90°C), or contact with acidic/alkaline environments, it conforms to British Standard BS8005 for low-pressure testing and sealing.

• Model Number: SES12
• Product Type: Steel Expanding Pipe Stopper
• Color: Silver (steel)
• Material: Steel body with natural rubber tyre (ring)
• Nominal Pipe Size: 12" / 300 mm
• Internal Diameter Range (I/D): 11.65" - 12.59" / 296 mm - 320 mm
• Minimum Insertion into Pipe: 3.3" / 85 mm
• Overall Length: 5.91" / 150 mm
• Diameter of Waterway: 1"
• Maximum Allowable Back Pressure: 7 psi / 0.5 bar
• Temperature Resistance: Up to 194°F / 90°C (suitable for arduous duties including chemical immersion)
• Weight (Net): 8 lbs / 3.72 kg
• Overview: Expandable test plug for purging and general pipe blocking; seals ends of pipes or openings for testing; ideal for water, gas, debris blocking in new or repaired pipework
• Key Features:
  • Expandable design: Central spindle with two plates and rubber tyre; wing nut compresses tyre for seal
  • Arduous duty suitable: For long immersion in water, higher temperatures, acidic/alkaline contact
  • Versatility: Hollow shaft version for hose connections or nipple caps; conforms to BS8005
  • Durability: Steel construction resists corrosion and wear; reusable
  • Safety: Low pressure testing; easy insertion/removal
• Packaging: 1 Stopper per Unit; Includes wing nut and tyre; Compact packaging
• Storage: Cool, dry place; indefinite shelf life
• Compliance: BS8005 for low pressure testing and sealing