PPG Semco® 240012 is the TPR coated replacement knob assembly for the Semco Model 250-A/B pneumatic sealant gun.
After the cartridge is loaded into the retainer and the retainer is attached to the valve assembly, the back knob is tightened to hold the cartridge in place.
Other spare parts for the same gun
- Valve body assembly 240000
- Bracket assembly 240010
- Swivel assembly 240015
- Gun handle assembly 240030
- Repair kit 240020
- Service wrench 240018
No Specifications