Can these fit onto the copper pipes

Hi,These are designed to be fitted onto Speedfit 15mm flexible pipe. Copper pipe does not require any inserts. Copper pipes can be used with speedfit fittings without inserts.Kind Regards,

Can these be used with Speedfit pipes into chrome isolating tap?

I assume you mean a line valve with compression fittings? If that is the case, a plain pipe insert rather than the Superseal type is the correct one to use. From John Guest website:- While both types of pipe insert are suitable for hot and cold-water systems as well as underfloor heating and central heating, when using Speedfit pipe and fittings, a plain insert should always be used when plastic pipe is installed with a compression fitting. Compression fittings vary in terms of depth and in some cases, using a superseal may stop the pipe from going fully into the fitting to ensure the compression ring is sitting on the pipe, and not on the insert. Always check that the compression fitting is suitable for use with plastic pipework and follow the instructions.

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JG Speedfit STS15P Superseal Inserts 15mm Pack of 10

JG Speedfit STS15P Superseal Inserts 15mm Pack of 10

Product ID: 48487857

Details

Brand
John Guest
Colour
White
Connector type
Insert
Global Trade Identification Number
Item dimensions L x W x H
15 x 11 x 1.5
Item weight
0.02 Kilograms

⚪durable white plastic

📏15mm precision fit

🔧10-pack for bulk projects

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$32.89

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Description

⚡ Seal it fast, seal it right – the pro’s choice for flawless pipes!

BULK PACK OF 10 - Keep your projects flowing with ample inserts in one pack
EASY INSTALLATION - Speedfit system ensures quick, hassle-free pipe sealing
DURABLE WHITE PLASTIC - Robust material designed to withstand plumbing pressures
TRUSTED BRAND QUALITY - JG Speedfit reliability for professional-grade plumbing
PRECISION 15 MM DIAMETER - Engineered for a perfect, leak-proof seal every time

The JG Speedfit STS15P Superseal Inserts are 15mm diameter pipe sealing inserts, supplied in a convenient pack of 10. Made from durable white plastic, these inserts ensure a secure, leak-proof connection within Speedfit plumbing systems, ideal for professional and DIY plumbing projects requiring reliable, quick installation.

Specifications

ASIN	B00NJSYBXM
Best Sellers Rank	75,561 in DIY & Tools ( See Top 100 in DIY & Tools ) 660 in Pipes, Pipe Fittings & Accessories
Brand	John Guest
Colour	White
Connector Type	Insert
Customer Reviews	4.6 4.6 out of 5 stars (558)
Global Trade Identification Number	05054480201308
Item Dimensions	15 x 11 x 1.5 centimetres
Item Weight	0.02 Kilograms
Manufacturer	JG Speedfit
Model Number	STS15P
Number of Pieces	10
Size	15mm
Thread Size	15mm
Thread Type	BSP
Unit Count	10.0 count

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