PVC Rod, Type 2

Type 2 PVC rod is an impact-modified version of standard PVC, formulated for parts that take mechanical shock and still need corrosion resistance. Where Type 1 PVC can chip or crack under impact, Type 2 absorbs it. Notched Izod impact strength runs roughly 10 to 20 ft-lb/in versus about 1 ft-lb/in for Type 1, a difference you feel immediately in machined parts with thin walls, sharp corners, or threaded features. It holds the core advantages of the PVC family: it will not rust, corrode, or scale, it resists acids, bases, and salt solutions, it machines cleanly on standard equipment, and it solvent welds for permanently bonded assemblies.

Type 2 rod is specified for bushings, bearing pads, wear strips, and spacers in chemical handling equipment, pump and valve components subject to vibration, fixture pins and machined parts in plating and anodizing lines, and any corrosive-service part where a dropped tool or a pressure surge would break ordinary PVC. The tradeoff is worth understanding. The impact modifier slightly reduces chemical resistance (particularly against strong oxidizing acids), lowers tensile strength and stiffness compared to Type 1, and the material is normally stocked in dark gray rather than light gray. The 140°F service ceiling and lack of UV stability carry over from standard PVC, so hot fluid service still calls for CPVC and outdoor installations still need a protective coating. For corrosive duty with real mechanical abuse, Type 2 is the right call.