What are the internal and external dimensions of the washers? The package dimensions are useless.

I measured the outer diameter to be =25.0mm (just a hair under 1"), inner diameter = 9.0mm (about 11/32"), thickness = 3.0mm (about 1/4"). Hard to measure more exactly because they are elastic.

How much heat will these withstand?

Depending on the silicon grade, typical range for silicon gasket temperature is approx. -100° F to 500° F for high quality silicon and conservative approximate range of -25° F to 300° F.

How thick are these? From current reviews it's sounding more than 1/8"

Below are measurements (thickness) in three formats using calipers: 1/8 inch .12 inch 3 mm

How malleable are these in terms of stretching?

They do stretch, but thickness and strength will cause the washer to buckle, if you force it over a larger object. I needed the center hole to be larger, so I used a sharp metal tube, curtain rod, to enlarge the hole.

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Grolsch Gaskets Silicone Seals - For Swing Top Bottles-40 Pack Combo Pack Clear, Made from Soft Silicone (Not Rubber, Better Sealing Than Rubber) 40 Pack Clear transparent

Product ID: 394360589

📦Bulk 40-pack with handy storage box

🔄Universal fit for most swing-top bottles

🛡️Soft silicone for superior leak-proof seal

$27.37

Duties & taxes included

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Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔒 Seal your brew like a pro—because every drop counts!

ORGANIZED READY - Comes in a durable plastic box to keep your seals clean and accessible.
VALUE PACKED BULK SET - 40 clear gaskets in one package—always be ready for your next brew or batch.
VERSATILE COMPATIBILITY - Fits a wide range of swing-top and flip-top beverage bottles effortlessly.
UNMATCHED SEAL INTEGRITY - Soft silicone construction outperforms rubber—no cracks, no leaks.
PREMIUM FDA APPROVED MATERIAL - Crafted from high-quality, food-safe silicone for peace of mind.

The Litorange Grolsch Gaskets Silicone Seals 40-pack offers a premium, FDA-approved soft silicone design that ensures a superior, leak-proof seal for most swing-top and flip-top bottles. Durable, clear, and conveniently packaged in a plastic box, these gaskets provide reliable performance and excellent value for home brewers and beverage enthusiasts alike.

Specifications

ASIN	B07T4FFB2N
Best Sellers Rank	#74,262 in Grocery ( See Top 100 in Grocery ) #14 in Beer Brewing Ingredients #206 in Canning Lids
Brand	LitOrange
Color	Clear 40
Customer Reviews	4.5 4.5 out of 5 stars (417)
Date First Available	29 June 2019
Item Weight	90 g
Package Dimensions	14.1 x 11.5 x 5.4 cm; 90 g

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