scope:

This specification covers the general composition and the physical, chemical, and low temperature properties of certain polymeric compounds used in the insulating and jacketing of electrical cables, cords, and wires, as determined on specimens removed therefrom, but does not cover compounds for hookup wires nor items where the wall thickness of the insulation or jacket is less than .006 inch. It does not cover characteristics associated with the finished product, except that test specimens are taken from the finished product. This specification is intended to serve as a auxiliary to detailed specifications for finished cables, cords, or wires (see 6.2 and 6.3).

Insulating and Jacket Compounds shall be of the following types as specified on the applicable specification sheets (see 6.3).

INSULATING COMPOUNDS Type IP - Medium-low temperature polyvinylchloride (PVC) and polyvinylchloride acetate (PVCA). Type IS - Medium-low temperature, styrene-butadiene rubber (SBR). Type IS-L - Medium-Low temperature, heat-resistant styrene-butadiene rubber (SBR). Type IR - Low temperature natural rubber. ^1/

Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, US Army Communications-Electronics Command and Fort Monmouth, ATTN: AMSEL-ED-TO, Fort Monmouth, NJ 07703 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.

Type IL - Low temperature natural rubber deposited from a rubber-latex compound. ^1/, ^2/ Type IJ-S - Medium-low temperature insulating and jacketing styrene- butadiene rubber (SBR). Type IL-H - Low temperature heat-resistant natural rubber deposited from a rubber-latex compound. ^1/, ^2/ Type IL-RN - Low temperature layer of natural rubber latex and a color-coded outer layer of chloroprene rubber (CR) latex bonded together. Type IH - Low temperature heat and ozone resistant ethylene-propylene rubber (EPM) or ethylene-propylene-diene rubber (EPDM).^3/ Type IJ-H - Low temperature, heat and weather resistant insulating and jacketing ethylene-propylene .rubber (EPM) or ethylene- propylene-diene rubber (EPDM). ^3/ Type IE - Polyethylene in accordance with L-P-390, Type II, Class L, Grade 3 or 4, Category 5. Type TPE-S - Low temperature, heat and ozone resistant, styrenic thermoplastlc elastomer. Type TPE-O - Low temperature, weather resistant, olefinic thermaplastic elastomer. JACKETING COMPOUNDS Type JP - Medium-low temperature polyvinylchloride (PVC) and polyvinylchloride-acetate (PVCA). Type JS - Medium-low temperature syrene-butadiene rubber (SBR). Type JS-L - Low temperature heat-resistant styrene-butadiene rubber. Type JR - Low temperature natural rubber. ^1/ Type JN - Moderate-low temperature chloroprene rubber (CR). Type JN-L - Low temperature chloroprene rubber (CR). Type JH - Low temperature, heat and weather resistant ethylene- propylene (EPM) or ethylene-propylene-diene rubber (EPDM). ^3/ Type JU - Low temperature, heat and weather resistant polyurethane thermoplastic elastomer.

intended Use:

The insulating and jacketing compounds covered by this specification are intended for use in insulations and jackets respectively of electrical cables, cords, and wires.