Duro Dyne Dyn-O-Rings make installing spiral ductwork quick and easy. Dyn-O-Rings come with pre-drilled holes for fast assembly to the duct. They eliminate labor intensive clamps and clips and no special tools are needed for installation. They can be installed & assembled on site or in shop. Ducts can be disassembled and reassembled easily and there is virtually no leakage at transverse connection when properly installed.

90 degree Dyn-O-Rings available in sizes from 8'' to 99'' in diameter and TDC Dyn-O-Rings available in sizes from 12'' to 99'' in diameter.

Manufactured from 18 gauge galvanized steel, meeting specifications ASTM A-653 (lock forming quality). Also available in 16 gauge galvanized steel and specialty metals: Aluminum, 300 Series Stainless Steel and Galvaneal. Flat Oval available upon request.

▪ Meets SMACNA Rigidity Class C, per the SMACNA Testing and Research Institute
▪ Pressure class +20”W.G. to -10” W.G.





Image 2

Dyn-O-Ring 90 Degree Lit Sheet >

Dyn-O-Ring TDC Lit Sheet >

Dyn-O-Ring Submittal >






Image 2
Dyn-O-Mate Product Catalog >

Image 2
Dyn-O-Mate Gauges >


See Our Video