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

⚡Quick, secure sealing

📦Pack of 10 for bulk value

🔧15mm precision fit

19975CFA

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Description

🔧 Seal it like a pro—because every connection counts!

PRECISION 15 MM FIT - Engineered for flawless compatibility with standard pipe sizes, ensuring leak-proof connections every time.
BULK PACK EFFICIENCY - Set of 10 inserts designed to keep your projects moving without constant reordering—ideal for pros and DIYers alike.
SUPERSEAL TECHNOLOGY - Advanced sealing inserts that guarantee a watertight, durable bond—no more worries about drips or leaks.
LIGHTWEIGHT COMPACT - Easy to handle and store, these inserts save space without compromising on performance.
TRUSTED BRAND RELIABILITY - From John Guest, a leader in plumbing innovation, backed by thousands of 4.6-star reviews.

The JG Speedfit STS15P Superseal Inserts are 15mm BSP thread pipe connectors designed for quick, reliable, and leak-proof plumbing installations. Sold in packs of 10, these lightweight, precision-engineered inserts from John Guest offer professional-grade sealing technology trusted by thousands of users worldwide.

Specifications

ASIN	B00NJSYBXM
Best Sellers Rank	47,147 in DIY & Tools ( See Top 100 in DIY & Tools ) 338 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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19975CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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