Designer and Manufacturer of Pressure, Structural, and Functional Solutions. Sealfast® Products brand. Sealfast® Elastomers Inflatable and Mechanical Seals. We engineer pipe test plugs, bulkheads & large isolation barriers, containment barriers, flood barriers, flange testers, flange adaptors, work assist tools, lifting tools, work positioning tools, leak testers, oil & gas tools, nuclear tools, environmental tools, mining & tunnel tools, and more!