can I use this for hot water conxt, and on brass / copper?

Absolutely, I’ve used it for that and also for natural gas and gasoline with excellent results.

I need to connect npt threaded stainless steel male fitting to a plastic female inlet on a water filter. t plus 2 or tru-blu or another sealant?

I typically don’t use anything but Teflon tape on any plastic fittings. Chemicals in liquid or paste sealants could soften the plastic.

Can this be used on gasoline fuel lines

Yes. The Product Document Sheet says it is suitable for use with gasoline, both leaded and unleaded.

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Rectorseal 31631 1/4 Pint Brush Top Tru-Blu Pipe Thread Sealant

Rectorseal 31631 1/4 Pint Brush Top Tru-Blu Pipe Thread Sealant

Product ID: 304850905

Details

Material
Brand
Rectorseal
Style
Compact
Item Weight
0.42 Pounds
Item dimensions L x W x H
5.1 x 5.1 x

💪10,000 psi liquid pressure

🔵Blue PTFE formula

🌡️20°-140°F application range

€ 56.96

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Seal like a pro, leak like never before!

TEMPERATURE TOUGH - Performs flawlessly between 20°F and 140°F, adapting to diverse environments.
PRECISION APPLICATION - Compact 4 oz brush-top can ensures mess-free, exact sealing every time.
VERSATILE COMPATIBILITY - Seals metal, plastic, and rubber threads seamlessly for all your projects.
TRUSTED AMERICAN QUALITY - Proudly made in the USA, delivering consistent, professional-grade results.
INDUSTRIAL GRADE STRENGTH - Withstands up to 10,000 psi liquid pressure for ultimate reliability.

Rectorseal 31631 is a premium 4 oz brush-top pipe thread sealant featuring a blue PTFE formula. Engineered for high performance, it withstands liquid pressures up to 10,000 psi and gas pressures up to 2,000 psi. Compatible with metal, plastic, and rubber, it operates effectively within 20°F to 140°F, making it ideal for professional plumbing and industrial applications. Proudly made in the USA, this compact sealant delivers reliable, water-resistant sealing with a flexible, full cure.

Specifications

ASIN	B0012YO0Z4
Best Sellers Rank	#175,044 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #411 in Digital Calipers
Brand	Rectorseal
Brand Name	Rectorseal
Colour	Blue
Compatible Material	Metal, Plastic, Rubber
Country of Publication	USA
Global Trade Identification Number	00021449316316
Item Dimensions	5.1 x 5.1 x 8.9 Centimeters
Item Form	Liquid
Item Weight	0.42 Pounds
Item dimensions L x W x H	5.1 x 5.1 x 8.9 Centimeters
Manufacturer	Rectorseal
Manufacturer Part Number	31631
Material	Polytetrafluoroethylene
Material Type	Polytetrafluoroethylene
Model	31631
Style	Compact
Style Name	Compact
Surface Recommendation	Metal, Plastic, Rubber
UPC	021449316316
Water Resistance Level	Water Resistant

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