Rotary unions · Lightweight, high-pressure coolant

103 Series Rotary Union — anodized aluminium for air, water & coolant applications

The 103 Series Rotary Union features an anodized aluminium housing with stainless steel internal components. Designed for air, water, and coolant applications, it offers reliable sealing, lightweight construction, and dependable performance for a wide range of industrial applications.

Up to 2500 RPM
Up to 60 bar coolant
¼″ to 2″ BSP
Size range
¼″ to 2″ BSP
Max speed — ⅛″ to 1″
2500 RPM
Max pressure — coolant
Up to 60 bar
Housing
Anodized aluminium
Key features

Five design choices built for lightweight, high-pressure coolant duty

Self-supported design

Robust self-supported design for reliable operation.

Anodized aluminium housing & stainless steel rotor

Made from aluminium anodized housing and stainless steel rotor for durability and corrosion resistance.

Balanced mechanical seal design

Balanced mechanical seal design for reliable and efficient sealing performance.

Carbon graphite to hardened stainless steel option

Different seal material combinations are available to suit various operating conditions.

Wide application range

Suitable for applications ranging from normal water supply to CNC coolant applications.

Operating conditions

Rated across air, water, coolant, and hydraulic oil service

Parameter & rating

MediaAir, gas, water & coolant applications
Max. speed — ⅛″ to 1″2500 RPM
Max. speed — 1¼″ to 2″750 RPM
Max. pressure — air, gas & water15 bar
Max. pressure — coolantUp to 60 bar
Max. pressure — hydraulic oilUp to 30 bar
Max. temperature60°C for all media
Size¼″ to 2″ BSP
Connection typeISO 228 (NPT / Metric)
Quick release nippleFlange type

Need help specifying for CNC coolant applications?

Contact the Carbon Rotofluid technical team for seal material guidance, dimensional drawings, or stock availability in your required size.