How to Replace a Mixer Tap O-Ring (UK)
Fix a leaking swivel-spout mixer by fitting fresh EPDM O-rings. Sizing and lubricant.
BristanGroheFrankeIdeal StandardReginox
Common O-ring sizes
Most kitchen mixers use 3.5 × 2 mm (upper) and 3.5 × 2 mm (lower) EPDM. Grohe uses 27 × 2 mm on some spouts.
Fit
Isolate. Lift spout by turning lever aside. Roll off old O-rings. Silicone grease new ones and roll on. Refit spout with gentle rotation.
Frequently asked questions
- Nitrile or EPDM?
- EPDM only for hot water applications. Nitrile hardens at >60 °C.
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