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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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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HEFTMAN Glass Mason Jars With Lids

Product ID: 541436268

Details

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

🍯Versatile food & craft use

🧊1L airtight seal

♻️Reusable & eco-friendly

€ 46.64

Duties & taxes included

In stock

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Description

🥫 Seal the moment, savor the lifestyle.

SIX PACK POWER - Stock up with a set of 6 large 1L jars—perfect for organized kitchens and creative projects alike.
BPA FREE DURABLE GLASS - Safe, clear glass construction with sturdy metal lids for reliable, toxin-free storage.
CRAFT STORE GIFT REPEAT - Ideal for jams, pickles, skincare, candles, and even stylish wedding favors—unleash your creativity.
DISHWASHER MICROWAVE SAFE - Effortless cleaning and reheating without compromising jar integrity or safety.
LOCK IN FRESHNESS EVERY TIME - Premium airtight seal ensures lasting freshness for your homemade preserves and meal preps.

HEFTMAN Glass Mason Jars come in a convenient 6-pack of 1-litre airtight, BPA-free glass containers with durable metal lids. Designed for versatile use—from food storage and canning to crafts and gifts—these dishwasher and microwave safe jars combine functionality with eco-conscious reusability, making them a must-have for organized, trend-savvy kitchens.

Specifications

ASIN	B0C946L95B
Best Sellers Rank	4,729 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 23 in Jars
Brand	HEFTMAN
Capacity	1 litres
Closure Type	Screw
Colour	Clear/Silver
Container Shape	Round
Country of Origin	China
Customer Reviews	4.5 4.5 out of 5 stars (1,257)
Included Components	6 x Glass Mason Jars
Is the item dishwasher safe?	Yes
Is the item microwaveable?	Yes
Item Dimensions L x W x H	28L x 21W x 39.5H centimetres
Item Form	Jar
Item Type Name	Glass Mason Jars With Lids
Item Volume	1 Litres
Item Weight	2.7 Kilograms
Lid Material	Metal
Manufacturer	HEFTMAN
Material	Glass
Material Features	BPA Free
Other Special Features of the Product	Air Tight
Product Care Instructions	Dishwasher Safe
Recommended Uses For Product	jams, meal prep, pickles, chutneys
Size	1 Litre
Unit Count	6.0 count
Usage	food storage and preparation

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