Culvert balloon (or pneumatic pipe plug/formwork balloon) used to shape concrete culverts, or a pneumatic marine airbag used for ship launching and heavy object moving.
Key Features
• Material: High-strength reinforced synthetic rubber.
• Function: Inflated with air to create a temporary internal form for pouring concrete culverts or used as rolling airbags for heavy load transport.
• Valves: Fitted with brass inflation/deflation valves connected to a hose and pressure gauge at the end