ARMOR Defender Multi-Layer VCI Gusseted Bags for Engine and Large Metal Part Corrosion Protection
These 20x16x30 in. gusseted VCI bags use ARMOR's Defender multi-layer co-extruded film to provide corrosion inhibition, barrier protection, and puncture resistance for large engine components, transmission assemblies, and industrial metal parts in storage and export packaging applications.
Specs: 20 x 16 x 30 in. (Width x Gusset x Length) | 4 mil | ARMOR Defender Multi-Layer VCI Film | 100/Roll | Weight: 23 lbs/Roll
Applications
Engine block and cylinder head corrosion packaging; transmission and differential assembly storage; large gear and sprocket VCI protection; stamped and machined metal part export packaging; industrial pump and valve component storage; marine and military surplus metal part preservation.
Features
Multi-layer co-extruded VCI construction provides superior barrier protection and puncture resistance compared to mono-extruded VCI film at equivalent gauge. VCI molecules volatilize within the sealed bag, forming a molecular corrosion-inhibiting layer on all exposed ferrous metal surfaces — including recessed cavities, threads, and interior passages. Gusseted format expands to accommodate bulky 3D components without stress on the film. 4 mil construction withstands handling of heavy cast and machined parts. ARMOR Defender grade offers enhanced performance in demanding storage and export environments.
Material Notes
ARMOR Defender multi-layer VCI film — co-extruded construction, not surface-coated or mono-extruded. VCI compound is embedded in the film matrix, providing continuous vapor emission throughout the protection period. Effective for ferrous metals. Performance period depends on seal integrity and storage conditions.
Use Case Notes
The 20x16x30 in. gusseted format opens to a maximum effective width of approximately 52 in. when fully expanded, accommodating large automotive engine blocks, transmission cases, and industrial subassemblies. Roll format (100/roll) supports high-volume production line packaging and distribution center operations. Heat-seal, tape, or tie the open end to maintain the corrosion-inhibiting vapor environment inside the bag.
Common Questions
Q: What is the difference between Defender multi-layer VCI and standard mono-extruded VCI film?
A: Multi-layer co-extruded VCI film combines multiple functional layers — VCI compound, barrier film, and structural layers — for better puncture resistance, moisture barrier, and VCI concentration compared to single-layer mono-extruded VCI film at the same gauge.
Q: Can this bag be reused after opening?
A: VCI bags should not be reused once opened and re-sealed. VCI effectiveness depends on maintaining the sealed vapor environment; opening the bag releases the VCI vapor concentration. Use a new bag for continued corrosion protection.
Why Buy
ARMOR Defender multi-layer construction outperforms mono-extruded VCI film in puncture resistance and barrier protection for heavy industrial parts. Gusseted format accommodates bulky 3D assemblies without film stress. 4 mil gauge withstands sharp edges and handling of cast and machined metal components. 100/roll format supports volume production packaging and distribution operations.