NES125 5" Nylon Expanding Pipe Stoppers

NES125 Nylon Expanding Pipe Stopper is a durable, expandable test plug designed for temporary sealing of pipe ends in welding, fabrication, and industrial piping applications. Made from nylon with a natural rubber tyre, this lightweight tool effectively blocks water, gases, and debris ingress during installation, repairs, or testing, fitting pipes with internal diameters from 4.60" to 5.00" (117-127 mm, 5" nominal). Ideal for arduous duties like chemical immersion or higher temperatures, it conforms to British Standard BS8005 for low-pressure testing and sealing.

• Model Number: NES125
• Product Type: Nylon Expanding Pipe Stopper
• Color: White (nylon)
• Material: Nylon body with natural rubber tyre (ring)
• Nominal Pipe Size: 5" / 125 mm
• Internal Diameter Range (I/D): 4.60" - 5.00" / 117 mm - 127 mm
• Minimum Insertion into Pipe: 1.6" / 40 mm
• Overall Length: 4.33" / 110 mm
• Diameter of Waterway: 0.5" BSP
• Maximum Allowable Back Pressure: 5 psi / 0.3 bar
• Temperature Resistance: Up to 194°F / 90°C (suitable for arduous duties including chemical immersion)
• Weight (Net): 1 lb / 0.20 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: Nylon construction resists corrosion; 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