SS12DBMBSPP12XMBSPP12-Z-AL by Super Swivel | #51501 | G 3/4-14 Male BSPP x G 3/4-14 Male BSPP | 0.657" Through Hole | Straight | Zinc | AFLAS SealFeatures: BSPP Swivels (British Standard Parallel Pipe) are most common in the UK, Europe, Asia, Australia, New Zealand and South Africa. A parallel thread fitting uses a bonded seal ring. This bonded ring seal is sandwiched in between a shoulder on the male fitting and the face of the female fitting and is squeezed in place with no thread sealant required. Super Swivels ball bearing race design withstands heavy side loads preventing premature seal