Can these jars go in an autoclave at 121 degrees celcius? What are the highest and lowest temperatures the material can withstand?

I boiled mine for 20 minutes. I do not know about an autoclave.

No, but I’ve only had the jars since Christmas and have only stored dry ingredients, so not sure longer term.

Are the jars as well as lids safe for microwave use?

You cannot put any metal in a microwave that obviously includes the metal lids but you can put the jars in.

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Glass Mason Jars with Lids 1L - Set of 6 Large Air Tight Jars for Overnight Oats, Homemade Jam, Food Storage, Meal Prep, Pickling, Preserving - Mason Jar 6 PCS (1 Litre)

Glass Mason Jars with Lids 1L - Set of 6 Large Air Tight Jars for Overnight Oats, Homemade Jam, Food Storage, Meal Prep, Pickling, Preserving - Mason Jar 6 PCS (1 Litre)

Product ID: 541436268

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Details

Brand
HEFTMAN
Colour
Clear/Silver
Material
Glass
Material feature
BPA Free
Capacity
1 litres

🍯Versatile for jams & more

♻️Reusable & eco-friendly

🛡️6 airtight 1L jars

Description

🍃 Preserve, Prep, and Impress with Every Jar!

MULTI USE MAGIC - Perfect for overnight oats, homemade jams, pickles, skincare, and creative crafts.
ECO CHIC REUSABLE - Sustainable glass design means no more single-use containers—join the zero-waste movement.
DISHWASHER SAFE DURABILITY - Easy to clean and built to last with solid glass and metal lids.
SEAL IN FRESHNESS SEAL OUT WASTE - Premium airtight lids lock flavor and nutrients for lasting freshness.
SIX PACK POWER FOR ORGANIZED LIVING - Stock up with six durable 1-liter jars to streamline your kitchen and meal prep.

This set of six 1-liter glass mason jars features airtight, watertight metal lids designed for superior food preservation. Made from durable, clear glass and dishwasher safe, these versatile jars are perfect for canning, meal prep, homemade jams, pickling, and even crafts. Reusable and eco-friendly, they combine functionality with sustainable style for the modern kitchen.

Specifications

Product dimensions	28L x 21W x 39.5H centimetres
Recommended uses for product	jams, meal prep, pickles, chutneys
Special feature	Air Tight
Container Shape	Round
Closure type	Screw
Dishwasher safe?	Yes
Item weight	2.7 Kilograms
Product care instructions	Dishwasher Safe
Item volume	1 Litres
Unit count	1.0 count
Is microwaveable	Yes
Item form	Jar
Manufacturer	HEFTMAN
Specific uses for product	Jams, chutneys
Set Name	Pack of 6
Size	1 Liter
Lid material	Metal
Item model number	1 Litre
Number of Pieces	6
Special Features	Air Tight
Included Components	6 x Glass Mason Jars
Batteries included?	No
Batteries Required?	No
Item Weight	2.7 kg

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414 Lei

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TrustScore 4.5 | 7,300+ reviews