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Protex 5 Mask-Off Protection Paper | Aircraft Boeing BAC 5034
Protex 5 Mask-Off Protection Paper | Aircraft Boeing BAC 5034
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$119.99 USD
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$119.99 USD
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$119.99 each
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Protex 5 Aluminum Scratch Protection Paper for Aircraft | Boeing BAC 5034
Protex 5 by Mask-Off is a 4–5 mil latex-saturated protective paper engineered for scratch and abrasion protection of bare aluminum, titanium, stainless steel, and painted surfaces — this aerospace surface protection paper is printed in bold red ink with "SCRATCHES CAUSE REJECTIONS — HANDLE WITH CARE" to keep shop-floor crews accountable. Built for protecting exterior aluminum skins, electronic cabinetry, and bare metal surfaces during demanding fabrication. Qualified to Boeing BAC 5034.
Its natural latex adhesive holds reliably during active fabrication — the surface can be routed, drilled, countersunk, and riveted right through the paper without removal. A flat release liner allows this latex paper backing to be die-cut into custom shapes and sizes for precise coverage.
Manufacturer's Certification included FREE of charge.
Key Features of Protex 5 Protective Paper
- "Scratches Cause Rejections" warning printed in red ink — Bold shop-floor reminder keeps crews accountable and surfaces damage-free during fabrication
- Fabrication-ready protection — Surface can be routed, drilled, countersunk, and riveted through the paper without removal
- Natural latex adhesive — Reliable hold on aluminum, titanium, stainless steel, and painted surfaces without leaving residue
- Silicone-free adhesive — No silicone contamination risk on critical aerospace surfaces
- Die-cuttable — Flat release liner allows conversion into custom shapes and sizes
- Lightweight 4–5 mil construction — Thin and conformable for exterior aluminum skin and electronic cabinetry applications
- Boeing BAC 5034 qualified — Type IV, Class 1, Grade A
- AS9100C & ISO 9001:2008 manufacturer — Produced by a quality-certified aerospace supplier
What Is Protex 5 Used For?
- Exterior aluminum skin protection during aircraft fabrication and assembly
- Electronic cabinetry scratch prevention during manufacturing
- Bare aluminum, titanium, and stainless steel surface protection
- Painted surface protection during fabrication and transport
- Surfaces requiring routing, drilling, countersinking, and riveting through the tape
- Die-cut custom protection pieces for precision aerospace components
Protex 5 Specifications
| Substrate | Latex-saturated paper (printed red ink warning) |
| Adhesive | Natural latex (silicone-free, PSTC-1 Modified) |
| Liner | Flat (release liner — die-cuttable) |
| Thickness | 4.1–5.1 mil (nominal 5 mil) |
| Basis weight | 42–49 lbs / 3,000 sq. ft. |
| Tensile strength | 12.7 lb/in (M.D. min.) |
| Elongation | 6.0% M.D. min. |
| Elmendorf tear | 56 grams MD min. / 56 grams CD min. |
| Adhesion to steel | 17–22 oz/in (at time of manufacture) |
| Color | Natural (red printed warning) |
| Size options | 12", 16", 24", and 48" widths × 60 yd |
| Shelf life | 1 year from date of manufacture, stored cool/dry out of direct sunlight |
Available Sizes
- 12" (305mm) x 60 yds — P/N MO512
- 16" (406mm) x 60 yds — P/N MO516
- 24" (610mm) x 60 yds — P/N MO524
- 48" (1219mm) x 60 yds — P/N MO548
- Color — Natural with red printed warning. Sold by the roll; contact us for case quantities and custom die-cut shapes.
Product Attributes
| Manufacturer | Mask-Off Company, Inc. |
| Manufacturer P/N | PROTEX 5 (MO5) |
| NSN | 8135-00-946-2090 |
| Country of Origin | United States |
| Color Family | Natural |
| Pack Quantity | 1 Roll or Case |
| Schedule B Code | 4811.59.6000 |
| ECCN | 9A991.d |
Certifications & Approvals
- Boeing — BAC 5034, Type IV, Class 1, Grade A
- NSN — 8135-00-946-2090
- Manufacturer quality — Mask-Off is AS9100C and ISO 9001:2008 certified
Important Notes
- Not intended for fly-away applications
- Test prior to use on copper, brass, or anodized aluminum
- Test prior to outdoor exposure
Technical Data Sheet
Download the Protex 5 Technical Data Sheet (TDS)
Frequently Asked Questions
What is Protex 5 used for?
Protex 5 is a lightweight latex-saturated protective paper used to prevent scratches and abrasion on bare aluminum, titanium, stainless steel, and painted surfaces during aircraft fabrication and assembly. It protects exterior aluminum skins and electronic cabinetry, and can be routed, drilled, countersunk, and riveted through without removal.
Can you drill and rivet through Protex 5?
Yes. Protex 5 is a fabrication-ready protective paper — surfaces can be routed, drilled, countersunk, and riveted right through the paper without removing it, so the protection stays in place throughout the fabrication process.
Why is Protex 5 printed with a red warning?
Protex 5 is printed in bold red ink with "SCRATCHES CAUSE REJECTIONS — HANDLE WITH CARE" as a shop-floor reminder that keeps crews accountable and helps prevent costly surface damage and part rejections during handling.
What sizes does Protex 5 come in?
Protex 5 is available in 12", 16", 24", and 48" widths, each on 60-yard rolls, in natural with a red printed warning. It can also be die-cut into custom shapes and sizes thanks to its flat release liner.
Is Protex 5 Boeing approved?
Yes. Protex 5 is qualified to Boeing BAC 5034, Type IV, Class 1, Grade A, and carries NSN 8135-00-946-2090. It is manufactured by Mask-Off, an AS9100C and ISO 9001:2008 certified aerospace supplier.
