Best Plumbing Supplies — Plastic (2026)
8 plumbing supplies matching material “Plastic”, hand-picked from UK Amazon listings.
Not sure which one to pick? Read our Best Plumbing Tape UK guide.
Currently unavailable
Pros
- Standard UK bathroom fitting so replacements are easy to source
- Multifit compression outlet suits plastic, copper and lead pipe
- Compression joints need no solvent cement or soldering
Cons
- Plastic nuts can crack if overtightened
#2 Pick
John Guest Speedfit Equal Elbow 15mm (PEM0315W) Push-Fit Plumbing Fitting- Plastic
£9.09
Pros
- Quick, secure 90° bend without tools, glue, flux or hot works
- Works with hot and cold water and central heating pipe runs
- Demountable and reusable if a pipe run needs altering
Cons
- Push-fit joints cost more per fitting than solvent weld equivalents
#3 Pick
Hep2O Hepkey Plus Set 10-28mm, 4 Piece Pipe Release Tool Kit- Plastic
£6.05
Pros
- Four sizes cover the full range of Hep2O push-fit pipe diameters
- Releases push-fit fittings cleanly without damaging the pipe
- Compact set fits in a plumber's tool bag or van door pocket
Cons
- Only compatible with Hep2O-style push-fit fittings
£17.95
Pros
- Caps off pipework instantly without tools, glue or hot works
- Demountable and reusable if the system needs extending later
- Works with both hot and cold push-fit pipe runs
Cons
- Only suits Speedfit-compatible push-fit pipework
#5 Pick
Fluidmaster 400A Toilet Tank Repair Fill Valve - 2 Pack- Plastic
£30.29
Pros
- World-leading fill valve design fits most UK toilet cisterns
- Height adjusts from 9in to 14in without cutting the overflow pipe
- Two-pack keeps a spare on hand for the next running toilet
Cons
- Universal fit means some cisterns need a little extra trimming
#6 Pick
Hep2O HD1/15W Push-Fit Straight Connector 15mm, Pack of 10- Plastic
Currently unavailable
Pros
- Push-fit joint needs no solvent cement, soldering or specialist tools
- Joint recognition collar shows at a glance the pipe is fully home
- Pack of 10 covers a full bathroom or kitchen pipe run
Cons
- Push-fit joints are generally accessible only, not for chasing into walls
#7 Pick
John Guest Speedfit PEM0415W 15mm Straight Connector (Pack of 10)- Plastic
£10.30
Pros
- Tool-free push-fit joint installs, demounts and refits in seconds
- Pack of 10 covers a full bathroom or kitchen pipe run
- Works with copper, PEX and polybutylene pipe without solvent or solder
Cons
- Push-fit joints need the pipe end cut square and deburred to seal properly
£10.30
Pros
- Push-fit design joins 15mm pipe without soldering or compression tools
- Stainless steel teeth and O-ring give a secure, leak-free joint
- 25-year guarantee from John Guest
Cons
- Needs a clean, square pipe end to seat correctly
At a glance
- Products
- 8
- Price range
- £6.05–£30.29
- Average price
- £13.87
- Average rating
- 4.54 / 5
- Total reviews
- 5,532
- Top brand
- John Guest (2)
- Price tier split
- Budget7Mid-range1Premium0
- In stock
- 6
This selection focuses on plastic plumbing components suitable for a wide range of DIY projects around the home. We’ve curated a collection of fittings, connectors, and pipes constructed primarily from durable plastic materials, ideal for both internal and external water systems. These items offer a cost-effective solution for repairs or new installations where corrosion resistance is key – plastics are naturally immune to rust and limescale build-up.
These plastic plumbing supplies are commonly used in projects such as connecting taps, draining sinks, installing shower hoses, and creating irrigation systems. The range includes various sizes and configurations designed to fit standard UK plumbing practices. Remember to always check compatibility with existing pipework before commencing any work.
FAQ
What types of plastic are used in these supplies?
The primary plastics utilized are PVC (Polyvinyl Chloride) and CPVC (Chlorinated Polyvinyl Chloride). PVC is most common for general water pipes, while CPVC offers greater heat resistance and is often found in hot water applications.
Are these plastic pipes suitable for outdoor use?
Many of the items listed are suitable for external use, particularly those marked as UV resistant. However, always check the product specifications to confirm suitability for your specific environment; prolonged exposure to sunlight can degrade some plastics.
What tools do I need when working with plastic plumbing supplies?
You’ll typically require a pipe cutter (specifically designed for plastic), PTFE tape for sealing joints, and possibly a hacksaw if you need to modify the pipes. A measuring tape and adjustable wrench are also essential.
How should I seal plastic pipe joints?
Always use PTFE (Teflon) tape on the threaded ends of fittings before screwing them together. Wrap the tape clockwise around the threads, ensuring full coverage, to create a watertight seal. Overlap each wrap slightly for optimal adhesion.
Can I glue plastic plumbing pipes together?
While you can use PVC cement (glue) specifically designed for plastic plumbing, it’s generally recommended to utilise compression fittings whenever possible as they provide a more reliable and long-lasting seal without the potential for leaks due to imperfect gluing.
What is CPVC and when should I use it?
CPVC is a higher grade of PVC that can withstand significantly higher temperatures. It's ideal for hot water systems, central heating manifolds, and areas where there’s a risk of thermal expansion or contraction of the pipes.
How do I prevent leaks in plastic pipe joints?
Ensure proper joint preparation – clean all surfaces thoroughly before applying PTFE tape or using compression fittings. Tighten connections firmly but avoid over-tightening, which can damage the plastic and compromise the seal.
Are these plastic pipes compatible with copper plumbing?
Generally, plastic pipes are not directly compatible with copper systems without adapters. You'll need to use appropriate transition fittings designed for connecting dissimilar materials to prevent corrosion and ensure a secure connection.
What is the lifespan of plastic plumbing supplies?
With proper installation and maintenance, plastic plumbing supplies can last 20-30 years. Regular inspection and replacement when damaged are crucial to avoid leaks and potential water damage.
Where can I find more information on specific fitting sizes?
Refer to the product descriptions for detailed dimensions and compatibility information. If you’re unsure, consult a plumbing guide or seek advice from a qualified plumber to ensure accurate measurements and prevent incorrect installations.