Glass Spheres
Teledyne Benthos - Undersea flotation, buoyancy devices, glass spheres, hardhats, instrument housings. Teledyne Benthos - Undersea flotation, buoyancy devices, glass spheres, hardhats, instrument housings. Teledyne Benthos - Undersea flotation, buoyancy devices, glass spheres, hardhats, instrument housings.
Home   News & Events   Learning Center   Customer Care   About Us   Contact   Careers  
Product Information



Flotation Spheres

Undersea Systems Flotation Spheres

Teledyne Benthos patented VacuSealed® glass floats and instrument housings are manufactured from precision-molded spheres to exact specifications. The edge of each hemisphere is ground flat to extreme tolerances.  When used for flotation the hemispheres are matched, mated, and then evacuated to an absolute internal air pressure of less than 0.3 atmospheres. After evacuation, a sealant and protective tape are applied around the equator.  Spheres sealed in this method are nearly impossible to open due to the force exerted upon them by the atmospheric pressure. In the case of the 43.2 cm (17 in) diameter float, this force is in excess of 880 kg (2000 lbs).

Download PDF file

Size Buoyancy Depth Rating Tested Depth
10 inch 4.5 kg (10 lbs) 9,000 m (29,500 ft) 6,700 m (22,000 ft)
13 inch 10.4 kg (23 lbs) 9,000 m (29,500 ft) 6,700 m (22,000 ft)
17 inch 25.4 kg (56 lbs) 6,700 m (22,000 ft) 6,700 m (22,000 ft)
Undersea Systems, Equipment Home |  News & Events |  Learning Center
Products |  Customer Care |  About Us |  Contact |  Careers |  Site Map

Teledyne Benthos • 49 Edgerton Drive • North Falmouth, MA 02556 USA
Telephone: (508) 563-1000 • Fax: (508) 563-6444
Copyright © 2007 Teledyne Technologies Incorporated. All rights reserved.