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 O Rings

Product ID: 511386231

Details

Brand
Keze
Item Weight
1 ounces
Liquid Volume
1 fluid ounces
Material
Silicone
Package Information
Bottle

💧Waterproof & oxidation resistant

🌡️Temp stable -40° to 400°F

🛠️Food-grade NSF approved silicone

QAR 45

Duties & taxes included

In stock

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Description

🛠️ Keep it smooth, sealed, and stress-free with KEZE Silicone Grease!

COMPACT CONVENIENT - 1 oz bottle fits easily in your toolkit or drawer, ready to tackle leaks and squeaks whenever they arise.
CERTIFIED FOOD GRADE SAFETY - NSF-approved, odorless, and colorless formula ensures zero chemical contamination—perfect for plumbing in drinking water systems.
LONG LASTING FRICTION REDUCTION - High silicone content delivers durable lubrication that keeps faucets and valves turning smoothly without sticky buildup.
VERSATILE MULTI USE LUBRICATION - Ideal for faucets, valves, O-rings, gaskets, bearings, and even scuba gear—one tube to fix and protect all your seals.
UNMATCHED TEMPERATURE RESILIENCE - Keeps its smooth consistency from freezing cold to scorching heat (-40° to 400°F) for reliable performance in any environment.

KEZE Waterproof Food Grade Silicone Lubricant is a premium NSF-approved grease designed for plumbing professionals and DIYers alike. It offers exceptional temperature stability (-40° to 400°F), water and oxidation resistance, and a high silicone content for long-lasting lubrication. Perfect for sealing and lubricating faucets, valves, O-rings, and gaskets without contaminating drinking water, this 1 oz tube is your go-to solution for leak-proof, friction-free plumbing maintenance.

Specifications

ASIN	B0BN82TPY4
Best Sellers Rank	#207 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 in Industrial Lubricants
Brand Name	Keze
Compatible Material	Silicone, Rubber, O-rings, Gaskets, Faucets, Valves, Cartridges
Container Type	Bottle
Customer Reviews	4.8 4.8 out of 5 stars (5,653)
Included Components	Silicone Grease
Item Form	Grease
Item Weight	1 ounces
Liquid Volume	1 fluid ounces
Manufacturer	Keze
Material	Silicone
Model Number	001
Number of Items	1
Number of Packs	1
Part Number	001
Recommended Uses For Product	Sealing, Lubricating, Faucets, Valves, Cartridges, O-rings, Gaskets, Bearings, Door hinges, Shower heads, Toilet gaskets, Flashlight o-rings
SAE J300 Viscosity Grade	15W
Specific Uses For Product	Lubricating, Sealing
UPC	655365340614
Unit Count	1 Ounce
Upper Temperature Rating	400 °F
Viscosity	High
Viscosity Level	High

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