ASTM-D3295 › Standard Specification for PTFE Tubing, Miniature Beading and Spiral Cut Tubing
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This specification covers PTFE tubing, miniature beading and spiral cut tubing-manufactured from PTFE resin produced from dispersion. Five groups of PTFE tubing, miniature beading and spiral cut tubing, differentiated by size and type are presented. The groups are further subdivided into classes based on wall thickness: group 01 - tubing based upon the AWG sizes, group 02 - tubing based upon fractional inch sizes, group 03 - tubing based upon inner diameter and wall thickness, group 04 - tubing cut to form spiral wrap, and group 05 - miniature beading. The types are further differentiated in accordance with increasing wall thickness as follows: class 1 - light wall, class 2 - thin wall, class 3 - standard wall, class 4 - chemical tubing, and class 5 - heavy wall. The tubing and miniature beading shall be made of PTFE meeting the requirements prescribed. The melting point, specific gravity, weight loss, tensile strength, elongation, dielectric breakdown voltage, heat resistance, and dimensional stability shall be tested to meet the requirements specified.
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1.1 This specification covers PTFE tubing, miniature beading and spiral cut tubing-manufactured from PTFE resin produced from dispersion specified in Specification .
Note 1: PTFE tube and rod manufactured from resin specified in Specification are covered in Specification .
1.2 The values stated in SI units are to be regarded as standard. The inch-pound units given in parentheses are for information only.
1.3 The following hazard caveat pertains only to the test method portion, Section , of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
1.4 As PTFE resin produced from dispersion is not a true thermoplastic material, any reuse for the specification referenced above is impossible. However, markets do exist for non-virgin PTFE as additives and fillers.
Note 2: There is no known ISO equivalent to this standard.
coagulated dispersion PTFE; fluorocarbon polymer; fluoropolymers; miniature beading; polytetrafluoroethylene; PTFE; PTFE extruded tubing; spiral cut tubing; thin-walled tubing;; ICS Number Code 23.040.20 (Plastic pipes)
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Sept. 1, 2015