A-A-52047 Tubing, Nonmetallic Rubber And PlasticThis commercial item description CID covers the general requirements for tubing, nonmetallic rubber and plastic. Tubing, nonmetallic rubber and plastic covered by this CID is intended for commercial/industrial applications.

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A-A-52047D

TABLE VIII. Dimensions and tolerance for type VI tubing (inches).

Nominal size	Class 6, general use		Class 7, pressure and vacuum connections
Nominal size	Inside diameter ±0.016	Wall thickness ±0.016	Inside diameter ±0.016	Wall thickness ±0.016
1/8	.125	.094	.125	.250
3/16	.188	.094	.188	.250
1/4	.250	.125	.250	.250
5/16	.312	.125	-	-
3/8	.375	.125	-	-
1/2	.500	.125	-	-
5/8	.625	.125	-	-
3/4	.750	.125	-	-
1	1.000	.125	-	-

3.5 Physical properties. In addition to the physical properties specified in table I, type VI tubing shall meet the following requirements.

3.5.1 Swelling. There shall be not more than 2% swelling of the tubing after immersion for 14 days in a 3% salt solution at 82° F (28° C).

3.5.2 Resistance to cold. There shall be no signs of cracking when the tubing is bent back upon itself at -1 ±2 °F (-18 ±1 °C).

3.5.3 Flammability. Type VI tubing shall be exposed to an open flame for 15 seconds and then removed from the flame. The tubing shall self-extinguish within 5 seconds.

3.6 Materials. Materials used shall be free from defects that would adversely affect the performance or maintainability of individual components or of the overall assembly. Materials not specified herein shall be of the same quality used for the intended purpose in commercial practice. The term "recovered materials" means materials that have been collected or recovered from solid waste and reprocessed to become a source of raw materials, as opposed to virgin raw materials. None of the above shall be interpreted to mean that that the use of used or rebuilt products is allowed under this specification unless otherwise specified (see 7.4).

3.7 Marking. Tubing, nonmetallic (rubber and plastic) supplied to this CID shall be marked with the manufacturer's (MFR's) standard commercial PIN. (NOTE: The part number marked on the unit pack shall be the CID PIN.)

3.8 Workmanship Tubing, nonmetallic (rubber and plastic) shall be processed in such a manner as to be uniform in quality and shall be free from other defects that will affect life, serviceability, or appearance

4. REGULATORY REQUIREMENTS. The offerer/contractor is encouraged to use recovered material to the maximum extent practicable, in accordance with paragraph 23.403 of the Federal Acquisition Regulation (FAR).

5. PRODUCT CONFORMANCE PROVISIONS.

5.1 Product conformance. The products provided shall meet the salient characteristics of this CID, conform to the producer's own drawings, specifications, standards, and quality assurance practices, and be the same product offered for sale in the commercial marketplace.