Material Composition: Trivalent Coated Carbon Steel
Code 62 adapters are rated to 6,000 psi while Code 61 adapters are rated to 3,000 psi
Code 61 and Code 62 4-Bolt Flanges (SAE J518)
Hydraulic Flange Adapters use flange and bolts to make connections rather than thread and seals. There is an o-ring seat in the flange that is compressed between the flange and port which is held in place by flanges and high strength bolts.
The two hydraulic flange series are Code 61 (C61) rated to 3000 psi and Code 62 (C62) rated to 6000 psi. J518 flanges cross to JIS B 8363, DIN 20066, ISO 6141 (bolt size do change).