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Rendamax O-ring old no.: ARO305
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Rendamax O-ring old no.: ARO305 65108143

€ 50.53 incl. VAT

Original spare part Elco (Rendamax). Type: O-ring, ARO305. Application: Boiler / R300/301. Delivery time: on request (please contact us). Supplier code: 65108143.

Special-order item — delivery time on request (please contact us) — non-returnable

SKU: 8551090 Categories: ,

Price and stock checked on 20 October 2026.

Made-to-order item — ordered specially for you, see delivery time below
EU delivery from € 17.95 · Shipping & payment

Price incl. VAT. Any delivery costs are calculated in the basket — see shipping & delivery.

Does this fit my appliance?
ApplicationBoiler
Series / modelR500/501 and 5 other models
Elco (Rendamax) number65108143
Article number8551090
Not sure? Search by article or manufacturer number or check with the manufacturer or your installer.
All spare parts for Elco (Rendamax) R500/501 →
Made-to-order item — this spare part is not on our shelf and is ordered specially for you from the manufacturer or wholesaler, delivery time on request (please contact us). Specially ordered items cannot be returned: the manufacturer or supplier does not take them back. So check the type number of your appliance and the article number of the spare part beforehand. In doubt? Check with the manufacturer or your installer (see also returns).
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Rendamax O-ring old no.: ARO305: original Rendamax spare part, type: O-ring, ARO305. Application: Boiler (R300/301). Manufacturer number: 65108143; Instalpunt article number: 8551090.

According to the Rendamax parts lists, this part fits 6 models, including Elco (Rendamax) R300/301, Elco (Rendamax) R300/302 and Elco (Rendamax) R500/501. The full list is under “Fits”.

Special-order item (delivery time on request (please contact us)): it is ordered specially for you from the manufacturer and is non-returnable.

Check the rating plate of your appliance before ordering; if in doubt, ask the manufacturer or your installer. Work on gas-carrying parts must be carried out by a qualified gas engineer.

Product information: Rendamax O-ring old no.: ARO305 65108143

BrandElco (Rendamax) spare parts
Elco (Rendamax) manufacturer number65108143
Instalpunt article number8551090
EAN5414849040182
Part typeO-ring (All Elco (Rendamax) gaskets and seals · gaskets and seals of all brands)
ApplicationBoiler
Suitable for6 Elco (Rendamax) models (see list)
DeliverySpecial-order item, delivery time on request (please contact us)
Price€ 50,53 incl. VAT
OriginSupplied through the official technical wholesale channel, under Elco (Rendamax) number 65108143

Fits 6 Elco (Rendamax) models

The part Rendamax O-ring old no.: ARO305 65108143 is in the official parts list of these Elco (Rendamax) appliances. Click a model for the complete parts list.

Elco (Rendamax) Boiler (6)

Check the rating plate of your appliance. Not sure whether this part fits? Check with the manufacturer or your installer; with the correct manufacturer number you can order it here directly.

Available: O-ring for the same appliances

This part is currently out of stock. These Elco (Rendamax) parts of the same type are listed for at least one of the same appliance models and are available.

Before ordering, check the manufacturer number in the spare parts list or exploded view of your appliance.

Frequently asked questions about this item

Does the Rendamax O-ring old no.: ARO305 65108143 fit my appliance?
This part is in the parts list of 6 Elco (Rendamax) models, namely the R300/301, R300/302, R500/501, R500/501 SP, R500/502, R500/502 SP. The model type is on the rating plate of your appliance. If in doubt, ask the manufacturer or your installer.
What is the delivery time of this made-to-order item?
This is a special-order item: we order it specially for you from the wholesaler. The expected delivery time is on request (please contact us). You can also see the delivery time next to the stock status at the top of this page.
Can I return this made-to-order item?
A specially ordered item is not taken back by the supplier, so returns are not possible. So check the article number and the rating plate of your appliance beforehand. Is something wrong with your order? Then contact us via info@instalpunt.nl. The full terms and conditions are on returns.
What does shipping cost?
Shipping costs € 17.95 to Austria, Denmark, Italy, Spain and Sweden and € 24.95 to other EU countries. In-stock items ordered before 2 pm are dispatched the same working day; delivery usually takes 3–5 working days. Details: Shipping.
I have a fault code, which part do I need?
Look up the code in the fault code finder: per brand and appliance it shows what the code means and which part goes with it. If the code is listed with this part, the part belongs to that fault.

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