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Pneumatic Dispensing Equipment

Semco® Model 250-B Gun

The Semco® model 250-B handless sealant gun is a standard of the aerospace and electronic industries. It is designed for the quiet, pneumatic applications of sealants, adhesives, potting compounds, and other materials packaged in Semco® disposable cartridges or Semkit® packages for multi-component materials.

The Semco® model 250-B gun is available with retainers to fit standard 1, 2.5, 6, 8 and 12 oz disposable cartridges. Air hoses to operate the gun must be ordered separately. The Semco® gun handle cannot be attached to this model gun.

The gun is constructed of durable metal and engineered plastic parts designed to withstand the rigors of the production work place. The nickel plated retainers are affixed to the valve assembly via a quick connect, secure bayonet lock fixture permitting easy cartridge replacement.



• Reduces applied material cost
• Provides accurate material control
• Lightweight
• 0-100 psi (0-6.9) bar operating range
• Available in 1, 2.5, 6, 8, and 12 oz. sizes
• Bayonet lock on retainer permits quick cartridge change
• Durable, shock resistant parts
• Touch control on trigger regulates flow
• Positive control for smooth, even dispensing
• Ergonomic design

Description Part Number   Buy Online
250010B - 1 oz. 250010B
250060B - 6 oz. 250060B
250080B - 8 oz. 250080B
250120B - 12 oz. 250120B
250250B - 2.5 oz. 250250B