Filterclose-icon
AttributeType open-filters-icon close-filters-icon
AttributeType
Brand open-filters-icon close-filters-icon
Brand
Category open-filters-icon close-filters-icon
Category
Select quantity close-icon
RS PRO 2-Port RJ45 Female Punch Down Coupler, Cat5e, UTP

RS PRO 2-Port RJ45 Female Punch Down Coupler, Cat5e, UTP

RS Stock No. 266-2257

Brand RS Pro

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

€ 9.41

Temporarily out of stock

Add to basket
Select quantity close-icon
RS PRO 2-Port RJ45 Female Punch Down Coupler, Cat6, UTP

RS PRO 2-Port RJ45 Female Punch Down Coupler, Cat6, UTP

RS Stock No. 266-2259

Brand RS Pro

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

€ 11.42

118 in stock now

Add to basket
Select quantity close-icon
RS PRO 2-Port RJ45 Female Punch Down Coupler, Cat5e, UTP

RS PRO 2-Port RJ45 Female Punch Down Coupler, Cat5e, UTP

RS Stock No. 266-2258

Brand RS Pro

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

€ 9.41

104 in stock now

Add to basket
Select quantity close-icon
RS PRO 2-Port RJ45 Female Punch Down Coupler, Cat6, UTP

RS PRO 2-Port RJ45 Female Punch Down Coupler, Cat6, UTP

RS Stock No. 266-2260

Brand RS Pro

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

€ 11.42

120 in stock now

Add to basket
Select quantity close-icon
Schneider Electric Coupler, Conduit Fitting, 25mm Nominal Size, uPVC, Black

Schneider Electric Coupler, Conduit Fitting, 25mm Nominal Size, uPVC, Black

RS Stock No. 513-6227

Brand Schneider Electric

  • Category: Conduit Fittings
  • Fitting Type: Coupler
  • Super Section: Cable Management

€ 6.88

Temporarily out of stock

Add to basket
Select quantity close-icon
Georg Fischer Plastic Pipe Fitting, Straight Coupler, 25mm

Georg Fischer Plastic Pipe Fitting, Straight Coupler, 25mm

RS Stock No. 196-9717

Brand Georg Fischer

  • Category: Plastic Pipe Fittings
  • Length: 123mm
  • Super Section: Pipes & Pipe Fittings

€ 46.56

Temporarily out of stock

Add to basket
Select quantity close-icon
RS PRO Flange Coupler, Conduit Fitting, 25mm Nominal Size, Steel

RS PRO Flange Coupler, Conduit Fitting, 25mm Nominal Size, Steel

RS Stock No. 061-9963

Brand RS Pro

  • Category: Conduit Fittings
  • Finish: Galvanised
  • Section: Cables & Wires

€ 116.72

in stock now

Add to basket
Select quantity close-icon
HARTING RJ45 Socket/RJ45 Socket Coupler, Cat6, Shielded

HARTING RJ45 Socket/RJ45 Socket Coupler, Cat6, Shielded

RS Stock No. 765-9031

Brand HARTING

  • Interface Type: RJ45 Socket/RJ45 Socket
  • Section: Connectors
  • Type: Coupler

€ 19.45

675 in stock now

Add to basket
Select quantity close-icon
Cinch Single-Port RJ45 Female Coupler, Cat5e, Shielded

Cinch Single-Port RJ45 Female Coupler, Cat5e, Shielded

RS Stock No. 885-7696

Brand Cinch

  • Series Number: 30
  • Type: Coupler
  • Width: 23.5mm

€ 15.19

164 in stock now

Add to basket
Select quantity close-icon
Georg Fischer Plastic Pipe Fitting, Straight Reducer Coupler, 25mm

Georg Fischer Plastic Pipe Fitting, Straight Reducer Coupler, 25mm

RS Stock No. 196-9718

Brand Georg Fischer

  • Brand: Georg Fischer
  • Fitting Type: Reducer Coupler
  • Section: Plumbing & Pipeline

€ 38.65

4 in stock now

Add to basket
Select quantity close-icon
Huco Oldham Coupling, 25mm Outside Diameter, 8mm Bore Coupler

Huco Oldham Coupling, 25mm Outside Diameter, 8mm Bore Coupler

RS Stock No. 692-8064

Brand Huco

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

€ 49.45

84 in stock now

Add to basket
Select quantity close-icon
Huco Oldham Coupling, 25mm Outside Diameter, 12mm Bore Coupler

Huco Oldham Coupling, 25mm Outside Diameter, 12mm Bore Coupler

RS Stock No. 693-0780

Brand Huco

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

€ 17.07

57 in stock now

Add to basket
Select quantity close-icon
Huco Oldham Coupling, 25mm Outside Diameter, 8mm Bore Coupler

Huco Oldham Coupling, 25mm Outside Diameter, 8mm Bore Coupler

RS Stock No. 693-0786

Brand Huco

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

€ 17.07

51 in stock now

Add to basket
Select quantity close-icon
Huco Oldham Coupling, 57mm Outside Diameter, 25mm Bore Coupler

Huco Oldham Coupling, 57mm Outside Diameter, 25mm Bore Coupler

RS Stock No. 693-0847

Brand Huco

  • Coupling Types: Oldham Coupling
  • Outside Diameter: 57mm
  • Super Section: Power Transmission Couplings

€ 39.91

15 in stock now

Add to basket
Select quantity close-icon
Huco Oldham Coupling, 25mm Outside Diameter, 8mm Bore Coupler

Huco Oldham Coupling, 25mm Outside Diameter, 8mm Bore Coupler

RS Stock No. 693-0878

Brand Huco

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

€ 31.25

62 in stock now

Add to basket
Select quantity close-icon
Ruland Oldham Coupling, 25mm Outside Diameter, 10mm Bore Coupler

Ruland Oldham Coupling, 25mm Outside Diameter, 10mm Bore Coupler

RS Stock No. 745-8065

Brand Ruland

  • Bore: 10mm
  • Outside Diameter: 25mm
  • Super Section: Power Transmission Couplings

€ 70.91

120 in stock now

Add to basket
Select quantity close-icon
Ruland Oldham Coupling, 25mm Outside Diameter, 8mm Bore Coupler

Ruland Oldham Coupling, 25mm Outside Diameter, 8mm Bore Coupler

RS Stock No. 745-8068

Brand Ruland

  • Outside Diameter: 25mm
  • Section: Mechanical Power Transmission
  • Super Section: Power Transmission Couplings

€ 77.81

4 in stock now

Add to basket
Select quantity close-icon
Huco Oldham Coupling, 25mm Outside Diameter, 10mm Bore Coupler

Huco Oldham Coupling, 25mm Outside Diameter, 10mm Bore Coupler

RS Stock No. 692-8068

Brand Huco

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

€ 49.45

36 in stock now

Add to basket
Select quantity close-icon
Huco Oldham Coupling, 25mm Outside Diameter, 10mm Bore Coupler

Huco Oldham Coupling, 25mm Outside Diameter, 10mm Bore Coupler

RS Stock No. 692-8077

Brand Huco

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

€ 49.45

172 in stock now

Add to basket
Select quantity close-icon
Huco Oldham Coupling, 25mm Outside Diameter, 10mm Bore Coupler

Huco Oldham Coupling, 25mm Outside Diameter, 10mm Bore Coupler

RS Stock No. 692-8096

Brand Huco

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

€ 113.58

Temporarily out of stock

Add to basket
Select quantity close-icon
Huco Oldham Coupling, 25mm Outside Diameter, 8mm Bore Coupler

Huco Oldham Coupling, 25mm Outside Diameter, 8mm Bore Coupler

RS Stock No. 692-8099

Brand Huco

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

€ 113.58

Temporarily out of stock

Add to basket
Select quantity close-icon
Huco Oldham Coupling, 25mm Outside Diameter, 6mm Bore Coupler

Huco Oldham Coupling, 25mm Outside Diameter, 6mm Bore Coupler

RS Stock No. 693-0774

Brand Huco

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

€ 17.07

145 in stock now

Add to basket
Select quantity close-icon
Huco Oldham Coupling, 50mm Outside Diameter, 25mm Bore Coupler

Huco Oldham Coupling, 50mm Outside Diameter, 25mm Bore Coupler

RS Stock No. 693-0834

Brand Huco

  • Bore: 25mm
  • Brand: Huco
  • Category: Flexible Couplings

€ 31.00

71 in stock now

Add to basket
Select quantity close-icon
Huco Oldham Coupling, 25mm Outside Diameter, 6mm Bore Coupler

Huco Oldham Coupling, 25mm Outside Diameter, 6mm Bore Coupler

RS Stock No. 693-0865

Brand Huco

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

€ 31.25

Temporarily out of stock

Add to basket

...

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.