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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🔧 Seal like a pro, leak like a no-show!

COMPACT CONVENIENT - 1/4 pint size perfect for professional jobs and quick fixes alike.
EFFORTLESS APPLICATION - Brush top design ensures precise, mess-free sealing every time.
SUPERIOR THREAD PROTECTION - Tru-Blu formula guarantees a leak-proof, durable seal on all pipe threads.
ESSENTIAL FOR PLUMBING PROS - A must-have sealant that elevates your toolkit and job site confidence.
TRUSTED AMERICAN CRAFTSMANSHIP - Proudly manufactured in the USA for unmatched reliability and quality.

Rectorseal 31631 is a 1/4 pint brush-top pipe thread sealant made in the USA, featuring the Tru-Blu formula for reliable, leak-proof sealing on plumbing threads. Designed for precision application and professional-grade performance.

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Material	Plastic
Brand	Rectorseal
Style	Industrial
Item Weight	0.19 Kilograms
Item Dimensions LxWxH	2.15 x 2.15 x 3.5 inches
Compatible Material	Polyvinyl Chloride
Item Form	Liquid
Color	Blue
Manufacturer	The Rectorseal Corporation
Part Number	31631
Item Weight	6.7 ounces
Product Dimensions	2.15 x 2.15 x 3.5 inches
Country of Origin	China
Item model number	31631
Is Discontinued By Manufacturer	No
Size	1/4-Pint
Item Package Quantity	1
Included Components	Unit^Instruction Guide
Batteries Included?	No
Batteries Required?	No
Warranty Description	Warranty

Rectorseal31631 1/4 Pint Brush Top Tru-Blu Pipe Thread Sea

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