Is the TEMA SWIVEL Brass Coupling with UNF Male Thread Connections compatible with hydraulic oil and safe to use at up to 60 rpm?

Yes. The TEMA SWIVEL Brass Coupling with UNF Male Thread Connections is specified for use with hydraulic oil and is engineered for a maximum rotational speed of 60 rpm. Its brass body, hardened steel internal shaft, galvanized nut and NBR seals provide corrosion resistance, strength, wear resistance and leak-free performance over a temperature range of −40°C to +90°C, making it suitable and safe for demanding hydraulic applications at up to 60 rpm.

Can the TEMA SWIVEL Brass Coupling with UNF Male Thread Connections withstand exposure to corrosive environments and maintain seal integrity over time?

TEMA SWIVEL Brass Coupling with UNF Male Thread Connections can resist corrosive environments to a reasonable degree but with some limitations. Its brass body and galvanized steel nut provide inherent corrosion resistance better than plain steel, and the galvanized nut adds extra protection against rust. NBR seals maintain leak-free performance across a wide temperature range (-40°C to +90°C), supporting long-term seal integrity in typical hydraulic oil applications. The hardened steel internal shaft delivers wear resistance but is more susceptible to corrosion if exposed directly to aggressive chemicals or saline environments. For mildly corrosive industrial atmospheres and standard hydraulic fluids, the coupling should maintain seal integrity and reliable operation over time. However, in highly corrosive environments (strong acids, bases, chlorides, continuous salt spray, or offshore/marine exposure), brass and galvanized steel may degrade faster, potentially compromising seals and threads. In such cases consider additional protective measures (special coatings, stainless-steel variants, or more chemically resistant materials and seal compounds) or periodic inspection and maintenance to ensure long-term performance.

TEMA SWIVEL Brass Coupling with UNF Male Thread Connections

All products, Hydraulic rotary unions/

Additional information

Material	B – brass (bronze)

This compact rotary coupling is designed for applications that demand a reliable rotary connection while effectively reducing hose stress, ensuring longer service life and smooth operation. With its small dimensions and low torque requirements, it offers excellent efficiency even in limited installation spaces. Engineered for a maximum rotational speed of 60 rpm, it is perfectly suited for use with hydraulic oil in demanding industrial environments. The robust brass body guarantees durability, while the hardened steel internal shaft provides exceptional strength and wear resistance. A galvanized steel nut enhances corrosion protection, and the NBR sealing ensures secure, leak-free performance across a wide temperature range from -40°C to +90°C. This combination of materials and design features delivers a dependable solution for hydraulic systems, offering both reliability and ease of integration into various applications.

List of product variants

Article number	Product variant name	Nominal inner diameter	Working pressure [bar]	Enquiry
TA-R-500-31	Rotary joint DN11 GZ 7/8"-14UNF / GZ 7/8"-14 UNF	-	250

This compact rotary coupling is designed for applications that demand a reliable rotary connection while effectively reducing hose stress, ensuring longer service life and smooth operation. With its small dimensions and low torque requirements, it offers excellent efficiency even in limited installation spaces. Engineered for a maximum rotational speed of 60 rpm, it is perfectly suited for use with hydraulic oil in demanding industrial environments. The robust brass body guarantees durability, while the hardened steel internal shaft provides exceptional strength and wear resistance. A galvanized steel nut enhances corrosion protection, and the NBR sealing ensures secure, leak-free performance across a wide temperature range from -40°C to +90°C. This combination of materials and design features delivers a dependable solution for hydraulic systems, offering both reliability and ease of integration into various applications.