Description
DYKEM® Cross Check™ Torque Seal® Tamper-Proof Indicator Paste in gray provides a discreet yet highly effective method of identifying tampering or loosening of fasteners. Once applied, the bead fractures if disturbed, delivering immediate visual confirmation. The gray color is ideal for applications requiring a more subtle inspection mark while still offering UV fluorescence for enhanced visibility under blacklight.
Key Features & Benefits
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Tamper-proof torque mark – instantly reveals loosening or tampering
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Neutral gray color – provides subtle but visible marking; fluorescent under UV light
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Excellent adhesion – bonds securely to metals, coatings, and fasteners
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Simplifies inspections – reduces need for repetitive torque checks
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Supports warranty protection – offers tamper-evidence for compliance
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Aerospace-qualified – meets Boeing BMS8-45 Type II
Common Applications
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Aerospace and defense assemblies
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Automotive fastener inspections
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Heavy equipment and machinery maintenance
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Hydraulic and pneumatic system fittings
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Plant and industrial quality assurance
Technical Specifications
| Property | Value |
|---|---|
| Appearance | Gray liquid |
| Dry to Touch | 30–40 minutes |
| Cure Time | 80% in 48–72 hrs; full cure in 7–10 days |
| Fluorescence | Visible under UV/blacklight |
| Flash Point | 105.1 °F (40.6 °C) |
| Boiling Point Range | 276.9 – 485.1 °F (136.1 – 251.7 °C) |
| VOC Content | 42.28%, 430 g/L |
| Shelf Life | 3 years |
| Boeing Specification | BMS8-45 Type II |
Compliance & Certifications
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Meets Boeing BMS8-45 Type II
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Approved under Lockheed Martin, Northrop Grumman, and CPW specs
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Replacement for Organic Products F-900 Torque Seal
Compatible Substrates
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Metals (steel, aluminum, titanium, and alloys)
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Painted or coated bolts and fasteners
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Assemblies, housings, and industrial components
Packaging & Ordering Info
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Part Number (US): 83321
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Color: Gray
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Size: 1 oz tube
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Case Quantity: 24 units
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Shelf Life: 3 years
Available Cross Check™ Colors
| Color | Part No. (US) | Link |
|---|---|---|
| 🟠 Orange | 83314 | View Orange |
| 🟢 Green | 83315 | View Green |
| 🔴 Red | 83316 | View Red |
| 🟡 Yellow | 83317 | View Yellow |
| 🔵 Blue | 83318 | View Blue |
| ⚪ White | 83319 | View White |
| 🌸 Pink | 83320 | View Pink |
| ⚫ Gray | 83321 | View Gray |
Why Choose Chemical Concepts?
Chemical Concepts offers the complete DYKEM® Cross Check™ Torque Seal® line, trusted for aerospace, automotive, defense, and industrial compliance applications.
👉 For bulk pricing or technical guidance, contact [email protected] or call 800-220-1966.
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