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Recommended Surface Requirements

Media Sealed Static Surface Dynamic Surface
Cryogenic and Critical Sealing
of Light Gasses
Ra 6-12µin Ra 2-8µin
Rz <50µin Rz <30µin
Rsk - 1.0 to 4.0 Rsk - 1.0 to 4.0
Less Critical
Gas Sealing
Ra 16-32µin Ra 6-12µin
Rz <80µin Rz <50µin
Rsk - 1.0 to 4.0 Rsk - 1.0 to 4.0
Fluid Sealing Ra 20-63µin Ra 8-16µin
Rz <80µin Rz <50µin
Rsk - 1.0 to 4.0 Rsk - 1.0 to 4.0