Semco® Model 550 Sealant Gun

The Semco® Model 550 sealant gun is designed for the pneumatic application of sealant, caulking, adhesive,

and other compounds packaged in Semco® 1/10th gallon, 20, and 32 oz. cartridges. Parts are available to

convert the gun from one size to another. Air hoses to operate the gun must be ordered separately.

These lightweight guns are constructed of cast aluminum and other durable materials.

The 1/10 gallon cartridge retainer is secured to the gun via a springloaded quick-disconnect using

the bayonet locking feature on the retainer. The 20 and 32 oz. retainers can be quickly and easily

attached to the gun using a threaded bezel.