These Heavy Duty Bulkheads are very strong and suitable for large pipe installations up to 4 inch size pipe. The Flange is large enough to create a good seal. The internal threads allow you to connect additional PVC threaded fittings.
Uniseals are used to attach pipe to just about any type of container. They can be used in place of expensive bulkhead fittings in most situations. The most common use is on curved surfaces such as storage drums, buckets or even other pipes. Uniseals are made to fit PVC / ABS pipe 1.5" to 4" through wall thickness of 1/8" to 1/2".