Is this recommended for gas fittings on my Blackstone Griddle?

I would use this on propane gas connections

What’s the difference between application temp and performance temp? I’d need to use this for locking bolts that get up to 210 Fahrenheit.

Yes that would be appropriate. It seals items that will get into the higher range of temps

when reapplying the same sealant, is it necessary to first clean off the sealant from last time?

I would clean off the sealant before applying new just because the old sealant may have become contaminated. If it has some grit in it, it could affect the seal. Maybe overkill, but I don't like to second guess seals on propane lines.

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RectorSeal No. 5 25790 Pipe Thread Sealant, Lubricates & Protects Threads, Soft Setting, Slow Drying, & Permits Easy Breakout and Contains No Other Metals, 1.75 oz

RectorSeal No. 5 25790 Pipe Thread Sealant, Lubricates & Protects Threads, Soft Setting, Slow Drying, & Permits Easy Breakout and Contains No Other Metals, 1.75 oz

Product ID: 7377243

Details

Brand
Rectorseal
Item Weight
1.6 ounces
Item dimensions L x W x H
0.75 x 0.75 x
Material
Diacetone
Style
Squeeze tube

💧Water-resistant & potable-safe

🔩Metal-free, easy thread breakout

🛠️Soft-setting, slow-dry formula

R242

Duties & taxes included

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Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Seal it like a pro — no leaks, no stress, just flawless threads!

IMMEDIATE PRESSURE READY - Supports natural gas and water lines up to 2" and 100 psi, allowing instant system pressurization without waiting.
UNIVERSAL PIPE COMPATIBILITY - Works seamlessly on galvanized steel, brass, copper, stainless steel, PVC, and more—versatility that keeps you ahead.
EFFORTLESS APPLICATION SEAL - Soft-setting, slow-drying compound ensures smooth lubrication and long-lasting thread protection without hardening.
SAFE FOR POTABLE WATER SYSTEMS - Contains no metals and is certified safe for drinking water pipes, giving you peace of mind on every job.
TRADE TRUSTED INDUSTRY STANDARD - RectorSeal No. 5 is the go-to sealant for pros, delivering reliable performance and easy thread breakout every time.

RectorSeal No. 5 is a premium, non-hardening pipe thread sealant designed for professional tradesmen. Its soft-setting, slow-drying formula lubricates and protects threaded connections across a wide range of metals and plastics, including potable water systems. Metal-free and water-resistant, it allows immediate pressurization up to 2" pipes and 100 psi, ensuring fast, reliable, and leak-proof installations trusted by HVAC, plumbing, and construction experts worldwide.

Specifications

ASIN	B0009PU9CK
Best Sellers Rank	#3,305 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #10 in Industrial Thread Sealants
Brand Name	Rectorseal
Color	Yellow
Compatible Material	Metal
Customer Reviews	4.6 4.6 out of 5 stars (3,248)
EU Spare Part Availability Duration	2 years
Global Trade Identification Number	00021449257909
Included Components	Unit^Instruction Guide
Item Dimensions	0.75 x 0.75 x 5.5 inches
Item Form	Cream
Item Type Name	Puttys & Compounds
Item Weight	1.6 ounces
Manufacturer	The Rectorseal Corporation
Material Type	Diacetone Alcohol
Model	25790
Number of Items	1
Number of Packs	1
Part Number	25790
Style Name	Squeeze tube
Surface Recommendation	Steel
UPC	021449257909
Unit Count	1.75 Ounce
Warranty Description	Warranty
Water Resistance Level	Water Resistant

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