Marking of Electrical Insulating Materials (Military & Aerospace Wire Marking) (SAE-AS-81531)
Specifies the mandatory print permanence, mechanical abrasion resistance, and chemical fluid survivability requirements for heat-shrink sleeving and wire marker sleeves deployed in military aircraft, defense avionics, naval vessels, and armored combat vehicles. This engineering compliance guide details the mandated laboratory test procedures, authorized thermal transfer ribbons, and officially recognized Brady material combinations.
Testing is conducted on a specialized linear reciprocating friction apparatus. A Type HB hard rubber eraser (or certified abradant tool) loaded with exactly 500 grams (1.1 lbs) of normal downward force is cycled back and forth across the printed character legend for 20 complete double strokes (or 50 cycles following 24-hour immersion in MIL-PRF-5606 hydraulic fluid, JP-8 aviation turbine fuel, and lubricating oils). The printed text must retain 100% legibility under 10x optical magnification with zero character stroke erosion.
Certified Brady B-Number Materials for SAE-AS-81531
PermaSleeve® 3:1 Military Heat-Shrink Polyolefin
100% compliant with SAE-AS-81531 (Clause 3.4.2 & 4.6.2) and SAE-AMS-DTL-23053/5 Class 1 across all 3:1 diameter sizes (0.094" to 1.50").
Low Smoke Zero Halogen Heat-Shrink Polyolefin
Passes SAE-AS-81531 print permanence while achieving EN 45545-2 HL3 zero-halogen life-safety certification for mass transit and naval vessels.
High-Temperature / Fluid-Resistant PVDF PermaSleeve
Engineered for 225°C continuous service; passes SAE-AS-81531 after exposure to boiling Skydrol and aviation turbine lubricants.
Certified Orderable SKUs for SAE-AS-81531
Catalog part numbers, Grainger SKUs, roll dimensions, and list pricing.
Compliance & Quality Audit FAQs: SAE-AS-81531
Agency certifications (UL 969, SAE-AS-81531, MIL-STD-202G) evaluate the complete printed system—the face stock, the adhesive, and the ink formulation. If an unapproved third-party ribbon is used, the print may fail solvent or eraser abrasion testing, voiding the certification and failing AS9100 / ISO audits.
Click through to any material profile page (e.g. B-342 or B-7642) and use the "Print Spec Sheet" button in the top right to generate a clean, PDF-ready engineering submittal package.