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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💧 Seal the deal with KezeSilicone — where durability meets clean, professional-grade performance!

PURE SAFE SEALANT - NSF-approved, odorless, and colorless formula ensures zero chemical contamination for your drinking water.
EXTREME TEMPERATURE STABILITY - Maintains perfect consistency from freezing cold -40°F to scorching 400°F—built for any environment.
PROFESSIONAL GRADE RELIABILITY - Trusted by plumbers for leak repairs and maintenance, ensuring your fixtures perform flawlessly.
VERSATILE WATERPROOF LUBRICANT - Ideal for faucets, valves, O-rings, gaskets, and even scuba gear—one grease to rule them all.
LONG LASTING FRICTION REDUCTION - High silicone content delivers smooth operation and extends the life of hard-turning faucets and valves.

KezeSilicone Grease is a NSF-approved, food-grade silicone lubricant designed for plumbing applications. It resists water and oxidation, operates reliably between -40°F and 400°F, and is safe for use on O-rings, valves, faucets, and gaskets. This 3-pack of 1 oz tubes offers versatile, long-lasting lubrication that prevents leaks and reduces friction, making it a must-have for professional plumbers and DIY enthusiasts alike.

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Package Dimensions	13.31 x 11 x 3.51 cm; 28.35 Grams
Part number	001
Item display weight	85 Grams
Material type	Synthetic Rubber
Manufacturer	keze
Manufacturer reference	001
ASIN	B0BN82MJVK

KEZE Silicone Grease Waterproof Food Grade Silicone Sealant Lubricant for Plumbers Valve Faucet O Rings 1 oz 3-Pack

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