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NPFC - MIL-I-631

INSULATION, ELECTRICAL, SYNTHETIC-RESIN COMPOSITION, NONRIGID

active, Most Current
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Organization: NPFC
Publication Date: 15 November 1961
Status: active
Page Count: 32
scope:

This specification covers only the basic characteristics required by the synthetic insulation material, as such, and the methods suited to their satisfactory determination.

Electrical insulation shall be of the following types, as specified (see 6.2):

Type A - Polyethylene.

Type B - Cellulose acetate butyrate.

Type C - Cellulose acetate or cellulose triacetate.

Type D - Ethyl cellulose.

Type E - Vinylidene chloride copolymer.

Type F - Polyvinyl chloride and its copolymers.

Type G - Polyethylene terephthalate.

Electrical insulation shall be furnished in the following forms, as specified (see 6.2):

Form F - Film, in rolls (types B, C, D, and G only).

Form S - Sheet, fiat or in rolls.

Form T - Tape.

Subform Tf - Film tape (types B, C, D and G only).

Subform Ts - Sheet tape.

Form U - Tubing (see 6.7)

Subform Ua - American-wire-gage size (AWG size) (types A, E and F only).

Subform Ub - Cable-end-sealing size (type F only). (see 6.8)

Type F electrical insulation shall be furnished in the following grades, as specified (see 6.2):

Grade a - General purpose.

Grade b - Low temperature (form U only).

Grade c - High temperature (form U only).

Electrical insulation shall be furnished in the following classes, as specified (see 6.2):

Class I - Fungus resistance required.

Class II - Fungus resistance not required.

Type F, form U tubing shall be furnished in the following category:

Category 1 - Flame resistance required.

intended Use:

This type of material is intended for ultra high-frequency applications. It possesses excellent electrical properties which remain practically constant oyer a wide range of frequencies,... View More

Document History

February 26, 2021
Insulation, Electrical, Synthetic - Resin Composition, Nonrigid
A description is not available for this item.
June 2, 1987
INSULATION, ELECTRICAL, SYNTHETIC-RESIN COMPOSITION, NONRIGID
A description is not available for this item.
June 20, 1968
INSULATION, ELECTRICAL, SYNTHETIC-RESIN COMPOSITION, NONRIGID
A description is not available for this item.
June 15, 1964
INSULATION, ELECTRICAL, SYNTHETIC-RESIN COMPOSITION, NONRIGID
A description is not available for this item.
July 19, 1963
INSULATION, ELECTRICAL, SYNTHETIC-RESIN COMPOSITION, NONRIGID
A description is not available for this item.
November 6, 1962
INSULATION, ELECTRICAL, SYNTHETIC-RESIN COMPOSITION, NONRIGID
A description is not available for this item.
MIL-I-631
November 15, 1961
INSULATION, ELECTRICAL, SYNTHETIC-RESIN COMPOSITION, NONRIGID
This type of material is intended for ultra high-frequency applications. It possesses excellent electrical properties which remain practically constant oyer a wide range of frequencies, temperatures,...
December 15, 1959
INSULATION, ELECTRICAL, SYNTHETIC-RESIN COMPOSITION, NONRIGID
A description is not available for this item.
April 18, 1958
INSULATION, ELECTRICAL, SYNTHETIC-RESIN COMPOSITION, NONRIGID
A description is not available for this item.
March 19, 1957
INSULATION, ELECTRICAL, SYNTHETIC-RESIN COMPOSITION, NONRIGID
A description is not available for this item.
September 23, 1955
INSULATION, ELECTRICAL, SYNTHETIC-RESIN COMPOSITION, NONRIGID
A description is not available for this item.
November 10, 1953
INSULATION, ELECTRICAL, SYNTHETIC-RESIN COMPOSITION, NONRIGID
A description is not available for this item.
February 21, 1950
INSULATION, ELECTRICAL, SYNTHETIC-RESIN COMPOSITION, NONRIGID
A description is not available for this item.
August 10, 1948
INSULATION, ELECTRICAL, SYNTHETIC-RESIN COMPOSITION, NONRIGID
A description is not available for this item.

References

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