Standard Specification for Crosslinked Polyethylene (PEX) Tubing with Oxygen Barrier for Hot- and Cold-Water Hydronic Distribution Systems
STANDARD published on 1.2.2026
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Designation standards: ASTM F3253-26
Publication date standards: 1.2.2026
The number of pages: 17
Approximate weight : 51 g (0.11 lbs)
Country: American technical standard
Category: Technical standards ASTM
This specification covers the requirements, test methods, and markings for crosslinked polyethylene (PEX) tubing with a polymeric oxygen barrier layer, made in one standard dimension ratio (SDR 9), and distribution system components intended for hydronic heating and cooling applications up to and including a maximum working temperature of 200°F (93°C). Components are comprised of tubing, fittings, valves, and manifolds that are intended for use in residential and commercial hydronic heating and cooling systems. Tubing made to this specification incorporates a single outer or middle wall oxygen barrier layer designed to inhibit the transmission or permeation of oxygen through the tubing wall. The requirements and test methods cover materials, workmanship, tubing dimensions and tolerances, burst pressure, sustained pressure, excessive temperature and pressure, thermo-cycling, bent tube, oxidative resistance, layer adhesion, UV resistance, oxygen permeation, and fitting pullout strength tests.
Keywords:
, crosslinked polyethylene, hydronic, hydronic heating and cooling, oxygen barrier, PEX, PPI, plastic tubing, SDR9, tubing distribution systems,, ICS Number Code 23.040.20 (Plastics pipes)