Spring-Loaded Gas-Tight & Ballistic Door

A Spring-Loaded Gas-Tight & Ballistic Door is a high-security protective entry system designed for environments where both physical protection and airtight sealing are mission-critical. These doors are typically found in military bunkers, command centers, fallout shelters, and critical infrastructure facilities.

🔒 Key Features

1. Spring-Loaded Mechanism

• Heavy steel/armored doors can weigh hundreds of pounds.

• A spring-assisted or counterbalance system reduces effort, allowing fast opening/closing during emergencies.

• Ensures that the door closes automatically and maintains its seal.

2. Gas-Tight Seal

• Fitted with chemical-resistant gaskets (EPDM or butyl rubber).

• Designed for CBRN (Chemical, Biological, Radiological, Nuclear) protection.

• Maintains internal pressurization when used with air filtration systems.

3. Ballistic Protection

• Constructed from hardened steel or composite armor layers.

• Meets or exceeds NIJ Level III / IV ballistic standards (depending on configuration).

• Provides resistance against small arms fire, shrapnel, and explosive overpressure.

4. Locking System

• Multi-point locking bars or reinforced latches.

• Manual operation with the option for electronic or mechanical fail-safe locks.

• Lockable from both inside and outside (depending on security need).

5. Custom Sizes & Configurations

• Standard personnel entry sizes: 36” x 80” (approx.)

• Larger cargo/vehicle doors available.

• Can be designed as single-leaf or double-leaf units.

⚙️ Typical Specifications

• Material: High-strength structural steel plate (1/4″–1″ thick).

• Sealing: Continuous perimeter gasketing, tested for air & watertight performance.

• Frame: Fully welded steel frame, anchored into reinforced concrete walls.

• Finish: Powder-coated, anti-corrosion treatment, or military-grade paint.

• Optional Upgrades: Blast resistance, soundproofing, EMP shielding.

🛡️ Applications

• Military bunkers & command posts

• Civil defense fallout shelters

• Embassy / government safe rooms

• Critical infrastructure (power, telecom, water treatment plants)

• Armored facilities & panic rooms