B&K Industries 160-508 2-Inch PVC Expandable Repair Couplings Non-leading permanent seals are ensured by a 1500psi-rated O-ring, pressure rated to schedule 40 tolerances; O-ring maintains its shape and mobility Easily Fits and this is easy to install Made in United states Heavy duty PVC construction meets ASTM-D1784 and ASTM-D2466 Double " O " ring seal constructed of Buna -Inch-Inch These couplings expand and retract allowing easy installations in new or existing pipe lines 2-Inch