Ferrule for 3" OD tube is 29/32" long. Short Weld Ferrule is made of Type 304 Stainless Steel with #4 Dairy Finish and features threading on one end and butt weld on the other.
Ferrule for 2.5" OD tube is 27/32" long. Short Weld Ferrule is made of Type 304 Stainless Steel with #4 Dairy Finish and features threading on one end and butt weld on the other.
Ferrule for 4" OD tube is 5/8" long with 4" ID. Short Weld Ferrule is made of Type 304 Stainless Steel with #4 Dairy Finish and features a standard clamp on one end and butt weld on the other.