2" UNISEAL Uniseals are used to attach pipe to just about any container in situation where bulkheads will not work. The most common use is on curved surfaces such as storage drums, buckets, and even other pipe. Uniseals are provided in sizes intended for standard schedule 40 pipe (common household plumbing pipe). For example, a standard 2" schedule 40 PVC pipe requires a 2" Uniseal. We recommend using a hole saw for cutting holes where a Uniseal will be placed. After cutting the hole, remove any fragments of material left behind to ensure a good, watertight seal. 2" Uniseal Specs: Pipe ID - 2" (50mm) Pipe OD - 2.375 (60mm) Holesaw size: 3" (76mm) Up to 3/8" Wall Thickness. Made in the USA