can it be used on shingles

Shingles on a roof, or shingles on your body? I'd suggest calling a roofer if you need to use this on your shingles. You can apply it to the shingles on your body then call the doctor in the morning. It will keep the shingles sealed and prevent leakage until you can get to the doctor.

is this food grade? or can i use this on ovens and BBQ grills? it will not directly touch the food but there is a chance that it will. thanks

I sent an email to Permatex regarding the use of this specific RTV Silicone product (81160) to seal a gap in a steamer used in my sandwich shop (gap between 300 degree F steam generator basin and steamer housing). Their response indicates that NONE of the Permatex products are certified food safe: From: Permatex - Product Application Sent: Monday, August 16, 2021 10:14 AM To: Pete xxxxxxxxxxxxxxxxxxxxxxxxxxxx Cc: Permatex - Answered Subject: RE: New submission from Product Support Form Pete, Our products including the Red RTV Silicone is not FDA or NSF certified for indirect and direct food contact or for drinking water applications. Don Sutliff Senior Product Support Specialist ITW Permatex, Inc. 6875 Parkland Blvd. Solon, Ohio 44139 Apparently, Permatex is focused on automotive applications so food safe certification is not something they are concerned about. There are other brands of RTV silicone sealers that are specifically high temp food grade , such as ASI 502 and Sil-Bond "Food Grade NSF FDA RTV Silicone Sealant Adhesive Red High Temp".

Is this compatible with differential fluid?

Yes, 81160 is used on the differential cover.

Can I use red etc for interior application on a tin ceiling with exstream heat from the Fl sun ?

this is over kill but yes... are you trying to seal a leek or just hold things up?? this is a sealer not a contact cement.

Ultra Red | Desertcart Grenada

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Sold byAmazon GrenadaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔥 Seal the heat, not your schedule!

SAFE USER FRIENDLY - Non-flammable, non-toxic, and low odor for a clean, hassle-free application experience.
PRECISION OEM QUALITY - Sensor-safe and low odor, engineered to meet strict OEM silicone gasket specs for flawless performance.
VERSATILE APPLICATION - Use as a gasket maker or dressing—perfect for exhaust headers and high-temp repairs.
DURABLE FLEXIBLE SEAL - Silicone-based formula ensures long-lasting adhesion with flexibility to handle engine vibrations.
EXTREME HEAT RESILIENCE - Keeps your engine sealed even under 650°F intermittent heat—no cracks, no leaks.

Permatex 81630 Ultra Red High Temperature Gasket Maker is a premium silicone-based sealant designed for extreme heat resistance up to 650°F. Sensor-safe and OEM specified, it offers superior adhesion and flexibility while resisting oils and shop fluids. Ideal for automotive gasket repairs, especially exhaust systems, it delivers professional-grade performance with a low odor, non-toxic, and non-flammable formula.

Specifications

ASIN	B08CRY2BJB
Best Sellers Rank	#1,360 in Automotive ( See Top 100 in Automotive ) #3 in Gasket Sealers
Brand	Permatex
Brand Name	Permatex
Color	Ultra Red
Customer Reviews	4.7 out of 5 stars 2,074 Reviews
Included Components	Ultra Red High Temperature Gasket Maker
Item Thickness	0.2 Inches
Item Type Name	Permatex Ultra Red High Temperature Gasket Maker 3 oz
Item Weight	0.21 Pounds
Manufacturer	Permatex
Material	Silicone
Material Type	Silicone
Model	81630
Part Number	81630
UPC	686226816306
Unit Count	1.0 Count
Warranty Description	No warranty

Reviews

S**.

good quality and price

good quality and price works great for exhaust leaks

14.04.2026

S**E

ALWAYS FRESH

WE go through a lot of Permatex owning a semi truck. I'm glad i can order and it will be here the next day. Always fresh and no problems.

29.04.2026

R**Z

Good Quality Product

Good quality product

24.04.2026

R**K

Gasket sealer

Worked good for a gasket sealer high temp

29.03.2026

J**J

Does it's job

Worked fine

12.05.2026

A**R

Great

Best product for making seals

17.03.2026

R**N

Works as expected

3.04.2026

C**N

gasket sealer

just what I ordered and nothing less and at a great price and the delivery was fast

27.04.2026

R**O

Excellent

30.11.2024

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