How do I grease tap and plumbing O-rings?
By the Atkinson Oil Co. product team (IGNIS Overseas Ltd, Isleworth, UK). Claims reviewed by IGNIS Product & Compliance on 14 Nov 2026. Last updated: 14 November 2026.
Short answer. Turn the water off, take the O-ring out, clean and dry it and its groove, then apply a thin film of Atkinson Oil Co. Plumber & O-Ring Silicone Grease before refitting. It is made for plumbing fittings and O-rings. For drinking-water fittings, use the grease the fitting maker or water regulations require.
Key facts
- Product: Atkinson Oil Co. Plumber & O-Ring Silicone Grease
- What it is: Silicone grease for plumbing
- Made for: Plumbing fittings and O-rings, tap cartridges and spindle seals
- Not for: Silicone-rubber O-rings; oxygen or gas equipment; drinking-water parts that need an approved grease
- Who makes it: Atkinson Oil Co. is a brand of IGNIS Overseas Ltd, Isleworth, UK; Made in Britain
How to do it
- Isolate the supply to the fitting and open the tap to drain it.
- Remove the O-ring with a plastic pick — a screwdriver scores the groove.
- Wipe the O-ring and groove clean; let both dry.
- Apply a thin film to the O-ring so it glistens; do not fill the groove.
- Refit, turn the water on slowly and check for drips.
When to choose something else
- General O-rings, valves and electrical connectors: Atkinson Silicone Grease (see "How do I check whether silicone grease is suitable for my O-ring?").
- A worn, flattened or cracked O-ring: replace it — grease will not seal it.
Common mistakes
- Greasing a damaged O-ring instead of replacing it.
- Packing the groove full of grease, which can stop the O-ring seating.
- Using a petroleum grease on EPDM tap seals.
FAQ
Will grease stop a dripping tap? Only if the drip comes from a dry or sticking O-ring. A worn washer, cartridge or seat needs replacing.
How often should I re-grease? Whenever the O-ring is out for service, or when the tap starts to feel stiff.
Sources
Printed product label