Newborn Brothers Model 250 Caulk Applicator is an 18:1 cartridge applicator. The smooth-rod drive pushes silicone, construction adhesive, firestop, elastomeric, hybrid, and polyurethane.
Newborn Brothers Model 250 Caulk Applicator is an 18:1 manual smooth-rod cartridge applicator for 10 oz (1/10 gal) cartridges. It is used on thicker silicone, construction adhesive, firestop, elastomeric, hybrid, and polyurethane. It is placed on cartridge beads of those materials. A heat-treated smooth rod drives the bead, and manual smooth-rod power stays on that cartridge work.
| Property | Value |
|---|---|
| Manufacturer | Newborn |
| Model | 250 |
| Type | Manual smooth-rod cartridge applicator |
| Thrust ratio | 18:1 |
| Power | Manual, Smooth Rod |
| Capacity | 10 oz (1/10 gal) cartridge |
| Weight | 2.0 lbs |
| Drive | Heat-treated smooth rod |
| Material type | Silicone, Construction Adhesive, Firestop / Intumescent, Elastomeric, Hybrid / STP, Polyurethane |
| Project type | Glazing & Fenestration, Windows & Doors, Bathroom & Kitchens, Waterproofing & Restoration |
Product documents: Newborn 250 product page | Thrust Ratio Chart (PDF)
What work is Newborn Model 250 used on?
Cartridge beads of silicone, construction adhesive, firestop, elastomeric, hybrid, and polyurethane run on this higher-thrust frame.
What size is Newborn Model 250?
The cradle holds a 10 oz (1/10 gal) cartridge on the 18:1 smooth-rod drive.
What thrust ratio is Newborn Model 250?
An 18:1 ratio keeps the bead moving on construction adhesive, firestop, and polyurethane.
What drive rod is on Newborn Model 250?
A heat-treated smooth rod advances the piston so the bead stays continuous on the cartridge.
What power is on Newborn Model 250?
Manual smooth-rod drive advances the bead on construction adhesive, firestop, and polyurethane cartridges.
What viscosity class is Newborn Model 250?
Construction adhesive, firestop, and polyurethane need more thrust than a low-ratio frame can deliver.
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