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Rendamax gasket old no.: 507M121
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Rendamax gasket old no.: 507M121 12037638

€ 180.44 incl. VAT

Original spare part Elco (Rendamax). Type: Gasket, 507M121. Application: Boiler / R300/307. Delivery time: on request (please contact us). Supplier code: 12037638.

SKU: 8550825 Categories: ,

Price and stock checked on 20 October 2026.

✓ In stock — delivery usually within 3–5 working days
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 / modelR300/307 and 3 other models
Elco (Rendamax) number12037638
Article number8550825
Not sure? Search by article or manufacturer number or check with the manufacturer or your installer.
All spare parts for Elco (Rendamax) R300/307 →
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Rendamax gasket old no.: 507M121: original Rendamax spare part, type: Gasket, 507M121. Application: Boiler (R300/307). Manufacturer number: 12037638; Instalpunt article number: 8550825.

According to the Rendamax parts lists, this part fits 4 models, including Elco (Rendamax) R300/307, Elco (Rendamax) R500/502 and Elco (Rendamax) R500/507. The full list is under “Fits”.

In stock: order before 14:00 and it ships the same working day; delivery within the EU usually takes 3–5 working days.

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 gasket old no.: 507M121 12037638

BrandElco (Rendamax) spare parts
Elco (Rendamax) manufacturer number12037638
Instalpunt article number8550825
EAN5414849045071
Old number507M121
Part typeGasket (All Elco (Rendamax) gaskets and seals · gaskets and seals of all brands)
ApplicationBoiler
Suitable for4 Elco (Rendamax) models (see list)
DeliveryIn stock, delivery in 3–5 working days
Price€ 180,44 incl. VAT
OriginSupplied through the official technical wholesale channel, under Elco (Rendamax) number 12037638

Also known as: seal, sealing ring.

Fits 4 Elco (Rendamax) models

The part Rendamax gasket old no.: 507M121 12037638 is in the official parts list of these Elco (Rendamax) appliances. Click a model for the complete parts list.

Elco (Rendamax) Boiler (4)

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.

Frequently asked questions about this item

Does the Rendamax gasket old no.: 507M121 12037638 fit my appliance?
This part is in the parts list of 4 Elco (Rendamax) models, namely the R300/307, R500/502, R500/507, R500/507 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 for the Rendamax gasket old no.: 507M121 12037638?
This item is in stock. Ordered before 14:00, it ships the same working day and usually arrives within three to five working days.
Can I return this item?
Yes, unused and in the original packaging within 14 days of receipt. Unpacked or fitted items and electronics such as PCBs cannot be returned. How to register a return is explained 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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