McAlpine S13-ISON 32mm Blue Metric Compression Ring – For ASA10 Trap, S28L-ISO Adapter AND other mcalpine traps and fittings 

The McAlpine S13-ISON Blue Compression Ring is a 32mm metric sealing ring designed for use in compression waste fittings where European 32mm pipes are involved. This component is commonly fitted to the adjustable leg of the McAlpine ASA10 adjustable basin trap (please see diagram in the images to see where it goes), as well as the McAlpine S28L-ISO adapter, which connects 32mm European metric waste pipes to British 1¼" solvent-weld fittings.

Manufactured from durable elastomer, this blue-coloured ring ensures a tight, reliable seal for metric pipework and helps prevent leaks in mixed-standard plumbing systems — a common scenario when fitting European bath or basin wastes from brands like Geberit, Kaldewei, or Bette in UK systems.

Product Specifications

Key Features

• Designed for 32mm European metric waste pipe connections.

• Used in ASA10 traps and S28L-ISO adapters to bridge metric and imperial pipework.

• Bright blue ring distinguishes it from standard UK imperial seals.

• Ensures a watertight, durable seal in mixed-system plumbing setups.

• Flexible, chemical-resistant elastomer for long-term reliability.

The McAlpine S13-ISON 32mm Blue Compression Ring is an essential component for achieving leak-free seals in European metric waste installations, especially when integrating with UK-standard fittings.

Buy now from Getplumb – Reading’s trusted plumbing and heating supplier. Fast UK delivery or in-store collection available.

At GetPlumb, we strive to provide reliable and cost-effective delivery options to our customers. Please review our shipping policy below.

🆓 Free Local Delivery (Orders £60 & above)

We offer FREE delivery on orders £60 or more for selected local areas.

Eligible Postcodes Include:

• RG*
• SL*
• OX10*, OX11*, OX49*
• HP1*, HP3*, HP8*, HP9*, HP10*, HP11*, HP12*, HP13*, HP14*
• WD*, HA*, UB*, TW*, KT*
• W1* – W9*
• NW*, SW*

Delivery Time: 2–4 working days
Shipping Cost: £0.00

📦 Standard Shipping (Weight-Based Rates)

For orders that do not qualify for free delivery, standard shipping rates apply based on total cart weight.

• For cart weight between 0–5 kg, the shipping cost is £2.99 with a delivery time of 2–4 working days.
• For cart weight between 5–25 kg, the shipping cost is £7.99 with a delivery time of 2–4 working days.
• For cart weight between 26–40 kg, the shipping cost is £15.98 with a delivery time of 2–4 working days.
• For cart weight of 41 kg and above, the shipping cost is £31.96 with a delivery time of 2–4 working days.

🧱 Block Salt (Harvey’s) – Unit-Based
Shipping

This rate applies only to Harvey’s block salt products.

• £7.99 is charged for every 3 items.
• The charge increases by £7.99 for each additional set of 3 items.

Examples:

• 1–3 items → £7.99
• 4–6 items → £15.98
• 7–9 items → £23.97

Delivery Time: 2–4 working days

📏 Large / Long Items (Length-Based Shipping)

For oversized items where the product length is 1.5 metres or more:

Conditions:

• Product length ≥ 1.5 m
• Cart weight ≤ 40 kg

Shipping Cost: £18.00 (flat rate)
Delivery Time: 2–4 working days

Collection from Store

Customers can also choose to collect their order from our store in
Reading, UK, at no additional charge.

For any questions regarding shipping, please contact our support team at online@getplumb.co.uk.