Hello, could you please provide the NSF certificate for this item?

Dear, our NSF registration number is No.146038, you can check on the official website.

is this grease safe for plastic and fountain pens?

Yes. No problems in my 40+ years experience.

Can this be used on threaded connections instead of plumbers tape to prevent leaks?

This is not used to seal FPT (female pipe taper) and MPT (male pipe taper) plumbing pipe threads to prevent leaks. This is a lubricant that is primarily used on neoprene, butyl, nitrile, EPDM, etceteras, o-rings and gaskets. The lubricant assist in assembly and helps prevent bunching of the seal material as it is being tighten. It also aids in making a contact sealing surface for the o-ring and gasket. Examples where it might be use: sink/tub faucet valve stem, the o-ring on a PVC union or PVC union ball valve, etceteras. There are other pipe sealants that can be use to seal tapered threaded pipes like "Oatey White Pipe Joint Compound", "Highside Leak Lock Pipe Joint Sealant", "Permatex Thread Sealant with PTFE".

What is the percent of silicone in this product?

There is no information provided on the product packaging. All silicone greases are composed of silicone oil, PDMS, and a thickening agent, usually amorphous fumed silica, to make the oil into a grease. The exact proportions of the two may be proprietary info, so you would have to contact the mfr directly.

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KEZE Waterproof Food Grade Silicone Lubricant Plumbers Grease for Valve Sealant Faucet Pool Lube O Rings Filter 1 oz 1-Pack

KEZE Waterproof Food Grade Silicone Lubricant Plumbers Grease for Valve Sealant Faucet Pool Lube O Rings Filter 1 oz 1-Pack

Product ID: 608884873

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Details

Material
Silicone
Brand
Keze
Package Information
Tube
Liquid Volume
1 Fluid Ounces
Item Weight
1 Ounces

💧Water & oxidation resistant

🌡️Temp range -40° to 400°F

🛠️Food-grade NSF approved silicone

Description

🛠️ Keep your pipes smooth and your peace of mind smoother!

PURE SAFE FORMULA - NSF-approved, odorless, and colorless—perfect for plumbing applications involving drinking water without contamination risks.
MULTI SURFACE MASTERY - Versatile lubrication for faucets, valves, O-rings, gaskets, bearings, and more—one tube to rule them all.
WATERPROOF CORROSION SHIELD - Protects your plumbing components from water damage and oxidation, keeping everything running like new.
LONG LASTING FRICTION REDUCTION - High silicone content guarantees smooth operation and extends the life of hard-turning faucets and seals.
ULTIMATE TEMPERATURE RESILIENCE - Performs flawlessly from freezing cold to scorching heat, ensuring reliability in any environment.

KEZE Waterproof Food Grade Silicone Lubricant is a high-viscosity, NSF-approved silicone grease designed for plumbing professionals and DIYers alike. It withstands extreme temperatures (-40° to 400°F), resists water and oxidation, and safely lubricates faucets, valves, O-rings, and gaskets without contaminating drinking water. This multi-purpose grease ensures long-lasting, friction-free performance and corrosion protection, making it an essential tool for maintaining flawless plumbing systems.

Specifications

Material	Silicone
Brand	Keze
Package Information	Tube
Liquid Volume	1 Fluid Ounces
Item Weight	1 Ounces
Recommended Uses For Product	Sealing, Lubricating, Faucets, Valves, Cartridges, O-rings, Gaskets, Bearings, Door hinges, Shower heads, Toilet gaskets, Flashlight o-rings
Viscosity	High
Upper Temperature Rating	400 Degrees Fahrenheit
Specific Uses For Product	Prevent Corrosion
Item Form	Semi-Solid (Grease)
Manufacturer	keze
Net Quantity	1.0 Grams
UPC	655365340614
Number of Items	1
Model number	001
Item Weight	28.3 g
Package Dimensions	10.35 x 4.5 x 2.99 cm; 28.35 g
Item model number	001
Included Components	Silicone Grease
Are batteries included?	No