would it make acrylic painted coasters heat resistant, dont want coffee cups sticking to the coaster

You are better off using resin, get the one linked here, I used it on coasters, great, you can get ii on Amazon, get the starter kit, it is good, you can colour it as well, (1litre Starter Kit, CRAFT RESIN Epoxy Resin Kit - Crystal Clear Resin & Hardener Casting Resin for Jewelry Crafts & Art Resin - Food Safe, Self Leveling with High Gloss, UV & Heat Resistant, No Bubble & No Yellowing 500m, USE THAT,

Can I use this to seal and waterproof aluminium?

You can use it to seal a vinyl floor you painted with latex porch and floor paint in your bathroom. It protects the paint but leaves water marks.If you use this to waterproof aluminium, I'm not sure I'd do that....no matter how much a product touts that it doesn't "yellow" it does a little bit.

Is a respirator mask required when using this product?

I didn't use one . However I used a small amount in an open space. I put the lid on the tin immediately I finished. If you buy the aerosol I would recommend a mask.

Sorry I didn't make myself clear. What area would be covered using this half pint tin?

I can't answer that but I felt that a little went a long way.

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Rust-Oleum Varathane 200261H 1/2-Pint Interior Crystal Clear Water-Based Polyurethane, Water-Based Satin Finish

Product ID: 51320939

Details

Brand
Varathane
Finish type
Satin
Item weight
0.64 Pounds
Material
Polyurethane
Recommended uses for product
interior

💧Water-based clarity

⏱️Fast drying & easy cleanup

🛡️Scratch & spot defense

HK$333

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Description

✨ Protect your interiors with crystal-clear confidence! 💧

QUICK DRYING TIME - Recoat in just 2 hours to speed up your project and get back to living your best life.
CRYSTAL CLEAR FINISH - Show off your wood’s natural beauty with a transparent, non-yellowing satin sheen.
VERSATILE INTERIOR USE - Perfect for furniture, cabinets, doors, and trim—upgrade your entire space with one product.
LOW ODOR WATER BASED FORMULA - Enjoy a fresh workspace with minimal fumes and effortless soap-and-water cleanup.
ULTIMATE SCRATCH SPOT PROTECTION - Keep your furniture flawless and impress guests with durable, long-lasting defense.

Rust-Oleum Varathane 200261H is a 1/2-pint water-based polyurethane with a satin finish, designed for interior wood surfaces. It offers a transparent, non-yellowing protective coat that resists scratches and spots, dries quickly within 2 hours, and cleans up easily with soap and water, making it ideal for furniture, cabinets, doors, and trim.

Specifications

ASIN	B000LNW7ZM
Best Sellers Rank	11,248 in DIY & Tools ( See Top 100 in DIY & Tools ) 41 in Varnish
Brand	Varathane
Compatible Material	Wood
Country of Origin	USA
Coverage	31.25 square feet
Customer Reviews	4.2 4.2 out of 5 stars (2,049)
Finish	Satin
Item Form	Liquid
Item Type Name	Rust-Oleum Varathane 200261H 1/2-Pint Interior Crystal Clear Water-Based Polyurethane, Water-Based Satin Finish
Item Weight	0.64 Pounds
Liquid Volume	236 Millilitres
Manufacturer	Rust-Oleum
Material	Polyurethane (PU)
Model Number	200261H
Number of Items	1
Part Number	200261H
Recommended Uses For Product	interior
UPC	020066480295 026748200267
Unit Count	236.0 millilitre

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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HK$333

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Hong Kong.

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TrustScore 4.5 | 7,300+ reviews

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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