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Kubler, 25 mm OD Coupler 25 mm

Kubler, 25 mm OD Coupler 25 mm

RS Stock No. 860-2780

Brand Kubler

  • Brand: Kubler
  • Category: Flexible Couplings
  • Section: Mechanical Power Transmission

€ 154.37

3 in stock now

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SKF, 50 mm OD, 25 mm Bore Coupler A50

SKF, 50 mm OD, 25 mm Bore Coupler A50

RS Stock No. 268-9876

Brand SKF

  • Brand: SKF
  • Category: Flexible Couplings
  • Section: Mechanical Power Transmission

€ 78.44

Temporarily out of stock

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Huco, 25.4 mm OD, 8 mm Bore Finished with Keyway Bore, 25 mm Length Coupler

Huco, 25.4 mm OD, 8 mm Bore Finished with Keyway Bore, 25 mm Length Coupler

RS Stock No. 692-8064

Brand Huco

  • Brand: Huco
  • Category: Flexible Couplings
  • Manufacturer: Huco

€ 51.58

104 in stock now

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Huco, 25.4 mm OD, 8 mm Bore Finished with Keyway Bore, 25 mm Length Coupler

Huco, 25.4 mm OD, 8 mm Bore Finished with Keyway Bore, 25 mm Length Coupler

RS Stock No. 693-0786

Brand Huco

  • Brand: Huco
  • Manufacturer: Huco
  • Section: Mechanical Power Transmission

€ 16.57

340 in stock now

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Huco, 25.4 mm OD, 8 mm Bore Finished with No Keyway Bore, 25 mm Length Coupler

Huco, 25.4 mm OD, 8 mm Bore Finished with No Keyway Bore, 25 mm Length Coupler

RS Stock No. 693-0878

Brand Huco

  • Manufacturer: Huco
  • Section: Mechanical Power Transmission
  • Super Section: Power Transmission Couplings

€ 34.51

30 in stock now

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Huco, 25.4 mm OD, 9.53 mm Bore Finished with Keyway Bore, 25 mm Length Coupler

Huco, 25.4 mm OD, 9.53 mm Bore Finished with Keyway Bore, 25 mm Length Coupler

RS Stock No. 693-0780

Brand Huco

  • Category: Flexible Couplings
  • Coupling Types: Oldham Coupling
  • Outside Diameter: 25mm

€ 16.57

7 in stock now

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Huco, 25.4 mm OD, 6.35 mm Bore Finished with Keyway Bore, 25 mm Length Coupler

Huco, 25.4 mm OD, 6.35 mm Bore Finished with Keyway Bore, 25 mm Length Coupler

RS Stock No. 693-0783

Brand Huco

  • Brand: Huco
  • Category: Flexible Couplings
  • Section: Mechanical Power Transmission

€ 16.57

207 in stock now

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Cutterwell & Co Ltd Polyvinyl Chloride Coupler MTC 25 mm 16mm

Cutterwell & Co Ltd Polyvinyl Chloride Coupler MTC 25 mm 16mm

RS Stock No. 076-1944

Brand Cutterwell & Co Ltd

  • Brand: Cutterwell & Co Ltd
  • Section: Cables & Wires
  • Super Section: Cable Management

€ 16.06

in stock now

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Huco, 25.4 mm OD, 10 mm Bore Finished with Keyway Bore, 25 mm Length Coupler

Huco, 25.4 mm OD, 10 mm Bore Finished with Keyway Bore, 25 mm Length Coupler

RS Stock No. 692-8077

Brand Huco

  • Bore: 10mm
  • Brand: Huco
  • Coupling Types: Oldham Coupling

€ 51.58

556 in stock now

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Huco, 25.4 mm OD, 6 mm Bore Finished with Keyway Bore, 25 mm Length Coupler

Huco, 25.4 mm OD, 6 mm Bore Finished with Keyway Bore, 25 mm Length Coupler

RS Stock No. 693-0774

Brand Huco

  • Brand: Huco
  • Manufacturer: Huco
  • Outside Diameter: 25mm

€ 16.57

63 in stock now

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Huco, 25.4 mm OD, 6 mm Bore Finished with No Keyway Bore, 25 mm Length Coupler

Huco, 25.4 mm OD, 6 mm Bore Finished with No Keyway Bore, 25 mm Length Coupler

RS Stock No. 693-0865

Brand Huco

  • Bore: 6mm
  • Brand: Huco
  • Section: Mechanical Power Transmission

€ 34.51

6 in stock now

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Huco, 25.4 mm OD, 9.53 mm Bore Finished with Keyway Bore, 25 mm Length Coupler

Huco, 25.4 mm OD, 9.53 mm Bore Finished with Keyway Bore, 25 mm Length Coupler

RS Stock No. 692-8068

Brand Huco

  • Coupling Types: Oldham Coupling
  • Outside Diameter: 25mm
  • Section: Mechanical Power Transmission

€ 51.58

32 in stock now

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Huco, 25.4 mm OD, 10 mm Bore Finished with No Keyway Bore, 25 mm Length Coupler

Huco, 25.4 mm OD, 10 mm Bore Finished with No Keyway Bore, 25 mm Length Coupler

RS Stock No. 692-8096

Brand Huco

  • Manufacturer: Huco
  • Outside Diameter: 25mm
  • Super Section: Power Transmission Couplings

€ 124.87

4 in stock now

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Huco, 25.4 mm OD, 8 mm Bore Finished with No Keyway Bore, 25 mm Length Coupler

Huco, 25.4 mm OD, 8 mm Bore Finished with No Keyway Bore, 25 mm Length Coupler

RS Stock No. 692-8099

Brand Huco

  • Category: Flexible Couplings
  • Outside Diameter: 25mm
  • Section: Mechanical Power Transmission

€ 124.87

Temporarily out of stock

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Huco, 25.4 mm OD, 6.35 mm Bore Finished with No Keyway Bore, 25 mm Length Coupler

Huco, 25.4 mm OD, 6.35 mm Bore Finished with No Keyway Bore, 25 mm Length Coupler

RS Stock No. 693-0869

Brand Huco

  • Brand: Huco
  • Category: Flexible Couplings
  • Section: Mechanical Power Transmission

€ 34.51

11 in stock now

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RS PRO 1 Port RJ45 Female Unshielded Coupler, Cat5e

RS PRO 1 Port RJ45 Female Unshielded Coupler, Cat5e

RS Stock No. 266-2257

Brand RS Pro

  • LAN Category: Cat5e
  • Manufacturer: RS Pro
  • Number of Ports: 1

€ 9.54

Temporarily out of stock

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RS PRO 1 Port RJ45 Female Unshielded Coupler, Cat6

RS PRO 1 Port RJ45 Female Unshielded Coupler, Cat6

RS Stock No. 266-2259

Brand RS Pro

  • Length: 30mm
  • Type: Punch Down Coupler
  • Wiring Configuration: Straight Through

€ 11.67

82 in stock now

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Cutterwell & Co Ltd Polyvinyl Chloride Coupler MTC 38 mm 25mm

Cutterwell & Co Ltd Polyvinyl Chloride Coupler MTC 38 mm 25mm

RS Stock No. 076-1946

Brand Cutterwell & Co Ltd

  • Brand: Cutterwell & Co Ltd
  • Section: Cables & Wires
  • Super Section: Cable Management

€ 33.38

in stock now

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RS PRO 1 Port RJ45 Female Unshielded Coupler, Cat5e

RS PRO 1 Port RJ45 Female Unshielded Coupler, Cat5e

RS Stock No. 266-2258

Brand RS Pro

  • Manufacturer: RS Pro
  • Width: 25mm
  • Wiring Configuration: Straight Through

€ 9.54

18 in stock now

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RS PRO 1 Port RJ45 Female Unshielded Coupler, Cat6

RS PRO 1 Port RJ45 Female Unshielded Coupler, Cat6

RS Stock No. 266-2260

Brand RS Pro

  • Number of Ports: 1
  • Super Section: Network & Telecom Connectors
  • Width: 25mm

€ 11.67

99 in stock now

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Ruland, 50.8 mm OD 25 mm, 58.7 mm Length Coupler 25 mm

Ruland, 50.8 mm OD 25 mm, 58.7 mm Length Coupler 25 mm

RS Stock No. 174-7193

Brand Ruland

  • Brand: Ruland
  • Section: Mechanical Power Transmission
  • Super Section: Power Transmission Couplings

€ 223.39

Temporarily out of stock

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SKF, 25 mm OD, 12 mm Bore Coupler A25

SKF, 25 mm OD, 12 mm Bore Coupler A25

RS Stock No. 268-9872

Brand SKF

  • Brand: SKF
  • Section: Mechanical Power Transmission
  • Super Section: Power Transmission Couplings

€ 38.40

Temporarily out of stock

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Ruland, 25 mm OD 6 mm, 24 mm Length 6 mm Coupler

Ruland, 25 mm OD 6 mm, 24 mm Length 6 mm Coupler

RS Stock No. 325-8088

Brand Ruland

  • Brand: Ruland
  • Category: Flexible Couplings
  • Section: Mechanical Power Transmission

€ 106.68

10 in stock now

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Ruland, 25 mm OD 10 mm, 30 mm Length 10 mm Coupler

Ruland, 25 mm OD 10 mm, 30 mm Length 10 mm Coupler

RS Stock No. 325-8117

Brand Ruland

  • Brand: Ruland
  • Category: Flexible Couplings
  • Section: Mechanical Power Transmission

€ 117.34

17 in stock now

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...

What is a 25mm coupler?
A 25mm coupler is a connector designed to join two tubes, pipes, or conduits with a nominal outside diameter of 25 millimetres. It creates a continuous run by providing a secure, aligned joint between sections, enabling fluid, air, or mechanical transmission through the assembled system. In practice you’ll see 25mm pipe couplers used across plumbing, irrigation, HVAC, pneumatic and hydraulic lines, and industrial tubing. RS Components stocks a wide range of 25mm couplers to suit different materials and installation methods, including plastic, metal, and composite options.

Where are 25mm couplers typically used?
25mm couplers are common in:
  • Residential and commercial plumbing to join copper, PVC, or PEX piping
  • Irrigation and landscaping systems for garden hose and irrigation tubing
  • HVAC installations connecting ducting or flexible conduits
  • Industrial pneumatic and hydraulic lines using metal or composite tubing
  • Automotive and marine applications for fuel, coolant, or air lines
  • Conduit and electrical installations where 25mm external diameter conduit sections are joined
When selecting a 25mm coupler, consider the system fluid, pressure, temperature, and the installation method to ensure compatibility and performance.

What materials are 25mm couplers made from?
25mm couplers are manufactured from a range of materials to suit different environments and standards. Common options include:
  • Plastic such as PVC, CPVC, polypropene (PP), or nylon for lightweight, corrosion-resistant connections in plumbing and irrigation
  • Brass or stainless steel for high durability, higher pressure, and chemical resistance in industrial or potable-water systems
  • Aluminium or aluminium alloys for lightweight metal solutions in fabrications
  • Composite materials that combine strength and reduced weight for specialized applications
The right choice depends on the intended fluid or gas, temperature range, pressure rating, and compatibility with existing fittings.

What types of 25mm couplers are available?
Manufacturers offer several connection styles for 25mm couplers. Typical types include:
  • Push-fit (speed) couplers for quick, tool-free assembly on plastic or metal tubing
  • Compression couplers that use a compression nut and ring to seal around copper or steel tubing
  • Threaded couplers with male or female threads for threaded pipe systems
  • Solvent-weld (solvent cement) PVC/CPVC couplers for permanent PVC-based piping
  • Soldered or welded couplers for metal piping in high-strength applications
  • Adhesive or epoxy-bonded couplers for specific plastics or composites
Each type has its own installation method, pressure rating, and chemical compatibility, so choose based on your system design and maintenance needs.

How do I choose the right 25mm coupler?
Selecting the correct 25mm coupler involves evaluating several factors:
  • Application—plumbing, irrigation, HVAC, or industrial tubing
  • Material compatibility—water, chemicals, fuels, or air; check chemical resistance
  • System pressure and temperature—ensure the coupler rating matches operating conditions
  • Connection method—push-fit, compression, threaded, or solvent-weld
  • Size tolerances and fit—verify 25mm nominal diameter and outer diameter compatibility with the mating components
  • Ease of installation and maintenance—consider tool requirements and future disassembly needs
RS Components provides technical datasheets, material specifications, and compatibility notes to help you pick the right 25mm pipe or tube coupler for your project.

How do I install a 25mm coupler safely and correctly?
Safe, correct installation depends on the coupler type and material. General guidance:
  • Turn off supply lines and drain the system if required
  • Clean and deburr the tube ends to ensure a clean, square cut
  • For push-fit: ensure the tube is fully inserted to the stop; for threaded: apply appropriate sealant or PTFE tape; for compression: tighten the nut to manufacturer-specified torque; for solvent-weld: prime and apply solvent cement per instructions
  • Check for alignment, avoid over-tightening, and test for leaks under normal operating conditions
  • Use appropriate PPE and follow workplace safety protocols
Always consult the specific product datasheet from RS Components for exact installation steps and curing times, especially for solvent-weld and adhesive applications.

Are 25mm couplers suitable for potable water or other critical systems?
Many 25mm couplers are designed for potable water and food-grade or medical-grade applications, but you must verify the material and certification. Look for:
  • Compliance with standards (e.g., WRAS, DVGW, NSF/ANSI) depending on your region
  • Materials approved for drinking water contact (e.g., approved PVC, certain brass alloys)
  • Proper temperature and pressure ratings compatible with your distribution system
Always select a 25mm coupling that carries the appropriate certifications for potable use if that is your target application, and refer to RS Components’ product pages for specific approvals.

What maintenance and inspection practices apply to 25mm couplers?
Regular inspection helps prevent leaks and failures. Consider:
  • Visually inspect joints for signs of corrosion, cracking, or wear
  • Check for leaks after commissioning and after any system pressure changes
  • Replace damaged or aged fittings promptly to prevent water damage or equipment downtime
  • Store spare 25mm couplers in a dry environment and rotate stock to prevent material degradation
RS Components provides a broad portfolio of 25mm couplers with different materials and coatings to match your maintenance cycles and replacement needs.

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