Household

Best Lubricant for Plumbing O-Rings & Valves

Looking for the right lubricant for your plumbing o-rings & valves? We compared 3 options for this use case — including common searches like faucet, valve stem, o-ring, pipe fitting, plumber. Here's what works and what to avoid.

Dow Corning Molykote 111

Grease Base: Silicone Viscosity: NLGI #2 Form: Squeeze Tube

NSF H1 food-grade silicone grease. Industry standard for O-ring and seal lubrication.

Best for O-rings, plumbing valves, dive equipment, pneumatic seals, food-processing gaskets
Avoid Not a motion lubricant for bearings; won't work for metal-on-metal under load
For this use NSF food-grade, ideal for faucet O-rings and valve stems
Amazon ↗
$$ USA Manufacturer ↗

Permatex Dielectric Grease

Grease Base: Silicone Viscosity: NLGI #2 Form: Squeeze Tube

Protects electrical connections from moisture and corrosion. Essential for automotive work.

Best for Electrical connectors, battery terminals, spark plug boots, light bulb threads, O-rings
Avoid Metal bearings under load (insufficient film strength); surfaces to be painted
For this use Good for non-food plumbing seals
Amazon ↗
$ USA Manufacturer ↗

AGS SIL-Glyde Silicone Lubricant

Grease Base: Silicone Viscosity: NLGI #2 Form: Squeeze Tube

Silicone-based compound safe on all rubber and plastic. Popular in automotive and HVAC.

Best for Brake caliper pins, weatherstripping, rubber bushings, door seals, sunroof tracks
Avoid Not for high-load metal bearings
For this use Budget silicone option for general plumbing
Amazon ↗
$ USA Manufacturer ↗

Other Household Fixes

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