Can the NITTO KOHKI TSP CUPLA Carbon Steel Full-Flow Quick Coupling Socket with Hose End be used reliably with high-viscosity lubricants and which seals are recommended for such fluids?

Yes — the NITTO KOHKI TSP CUPLA Carbon Steel Full-Flow Quick Coupling Socket with Hose End can be used reliably with high‑viscosity lubricants. Its carbon steel construction and full‑flow design are optimized for transferring viscous fluids, minimizing pressure loss and ensuring durable performance under intensive use. Operational working pressures (up to 75 bar for smaller sizes down to 20 bar for 2") and the robust build support safe handling of heavy lubricants across typical industrial systems. For sealing, NBR (nitrile) is recommended and specified for this coupling, providing reliable performance from −20°C to +80°C and good compatibility with most petroleum‑based lubricants and oils. If operating temperatures, chemical compatibility, or specific lubricant formulations require broader resistance (higher temperatures, aggressive additives, or synthetic fluids), consider alternative seal materials such as FKM (Viton) or PTFE for improved chemical and temperature resistance. Select seal material based on lubricant chemistry and operating temperature to ensure long‑term reliability.

NITTO KOHKI TSP CUPLA Carbon Steel Full-Flow Quick Coupling Socket with Hose End

All products, General-purpose low-pressure quick couplings/

Additional information

Material	CS – steel (cast iron)

The Nitto Kohki TSP CUPLA full-flow quick coupling socket with hose end is a highly durable solution designed to ensure reliable performance across a wide range of demanding applications. Manufactured from robust carbon steel, it guarantees strength and long service life even under intensive use. Its versatility makes it suitable for water, hydraulic oils, steam, chemicals, air, and gases, while its optimized construction is particularly effective for transferring high-viscosity fluids such as lubricants. With working pressures of up to 75 bar for smaller sizes (1/8″, 1/4″, 3/8″), 45 bar for medium sizes (1/2″, 3/4″, 1″), 30 bar for larger diameters (1.1/4″, 1.1/2″), and 20 bar for 2″, this coupling ensures safe and efficient operation across multiple system requirements. The operating temperature range from -20°C to +80°C with NBR sealing provides excellent adaptability in both low and high temperature environments. Engineered for maximum flow efficiency and minimal pressure loss, the TSP CUPLA socket is the ideal choice for industries seeking a reliable, high-performance connection solution that enhances productivity and reduces downtime.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
NK-10TSH-S	TSP CUPLA quick coupling socket, for hose 1.1/4", nickel-plated steel	32	30	In stock	Enquiry
NK-12TSH-S	TSP CUPLA quick coupling socket, for hose 1.1/2", nickel-plated steel	38	30	In stock	Enquiry
NK-16TSH-S	TSP CUPLA quick coupling socket, for 2" hose, nickel-plated steel	50	20	In stock	Enquiry
NK-2TSH-S	TSP CUPLA quick coupling socket, for 1/4" hose, nickel-plated steel	6	75	In stock	Enquiry
NK-3TSH-S	TSP CUPLA quick coupling socket, for 3/8" hose, nickel-plated steel	10	75	In stock	Enquiry
NK-4TSH-S	TSP CUPLA quick coupling socket, for 1/2" hose, nickel-plated steel	12	45	In stock	Enquiry
NK-6TSH-S	TSP CUPLA quick coupling socket, for 3/4" hose, nickel-plated steel	20	45	In stock	Enquiry
NK-8TSH-S	TSP CUPLA quick coupling socket, for 1" hose, nickel-plated steel	25	45	In stock	Enquiry

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The Nitto Kohki TSP CUPLA full-flow quick coupling socket with hose end is a highly durable solution designed to ensure reliable performance across a wide range of demanding applications. Manufactured from robust carbon steel, it guarantees strength and long service life even under intensive use. Its versatility makes it suitable for water, hydraulic oils, steam, chemicals, air, and gases, while its optimized construction is particularly effective for transferring high-viscosity fluids such as lubricants. With working pressures of up to 75 bar for smaller sizes (1/8″, 1/4″, 3/8″), 45 bar for medium sizes (1/2″, 3/4″, 1″), 30 bar for larger diameters (1.1/4″, 1.1/2″), and 20 bar for 2″, this coupling ensures safe and efficient operation across multiple system requirements. The operating temperature range from -20°C to +80°C with NBR sealing provides excellent adaptability in both low and high temperature environments. Engineered for maximum flow efficiency and minimal pressure loss, the TSP CUPLA socket is the ideal choice for industries seeking a reliable, high-performance connection solution that enhances productivity and reduces downtime.