There’s a new MIL-PRF-46846 Revision D, “Rubber, Synthetic, Heat – Shrinkable,” available from Document Center Inc. You can purchase the document in both paper and pdf format. The specification covers the type and class requirements for heat-shrinkable rubber extruded tubing, shapes, and molded parts.
These products are flexible, electrical insulating and have dimensions that will shrink to a predetermined size when heated. The heat-reactive synthetic rubber material is used in a wide range of applications requiring a tough, flexible synthetic rubber that will maintain good physical and electrical properties after heat shrinkage.
Such products are used for identification and covering splices in cables, lugs, and pipes, protecting feed-throughs, jacketing assemblies, insulating pigtail connections, as sleeves for wave guides and rectifier leads, and as covers for resistors and diodes.
MIL-PRF-46846 has unique military requirements because some types and classes must be resistant to chemicals such as hydrazine/UDMH (MIL-PRF-27402), Dinitrogen tetroxide (MIL-PRF-26539) and nitric acid (MIL-PRF-7254) (propellants in missiles.) All types must be resistant to fuels and oils such as JP-4 fuel, hydraulic fluid (MIL-PRF-5606), lubricating oil (MIL-PRF-7808) and aviation gasoline 100/130 – all used on military aircraft. And all types must be functional over military temperature ranges, which exceed that required in the commercial market.
There are a lot of changes in the new revision. For example, Type I Class 1 has been deleted because it duplicates AMS-3623. And Type V is replaced by AMS-DTL-23053/5. Another interesting development is the acceptance of metric equivalents when generated per FED-STD-376.
Document Center sells a complete catalog of Mil Specs and Standards, Fed Specs and Standards, and SAE publications at it’s web store, www.document-center.com. You can search, find and buy the documents (including obsolete revision levels) at our site. Or contact us by phone (650-591-7600), fax (650-591-7617) or email (info@document-center.com). We have been selling standards since 1982 and can assist you with all your documentation requirements.
