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

Product ID: 142417913

📦40-pack with handy storage box

🔄Fits most swing-top & flip-top bottles

🛡️Soft FDA silicone for superior sealing

R402

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Description

🔒 Seal your brew like a pro—because your craft deserves the best!

BULK VALUE PACK - 40 clear gaskets in one sleek plastic box—always be ready to reseal.
FDA APPROVED SAFETY - Crafted from high-quality, food-safe silicone for peace of mind.
UNIVERSAL COMPATIBILITY - Designed to fit a wide range of swing-top and flip-top bottles effortlessly.
UNMATCHED SEAL INTEGRITY - Soft silicone outperforms rubber—no cracks, no leaks.
DURABILITY MEETS CONVENIENCE - Flexible, non-deforming seals that keep your beverages fresh and secure.

Grolsch Gaskets Silicone Seals are premium, FDA-approved soft silicone replacements designed to fit most swing-top and flip-top bottles. This 40-pack combo offers durable, leak-proof sealing that outperforms traditional rubber gaskets, ensuring your beverages stay fresh without cracking or deforming. Packaged in a convenient plastic box, these clear gaskets combine safety, longevity, and universal fit for all your bottling needs.

Specifications

ASIN	B07T4FFB2N
Best Sellers Rank	#95,306 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #147 in Beer Brewing Bottles & Bottling
Customer Reviews	4.5 4.5 out of 5 stars (732)
Date First Available	June 13, 2019
Item Weight	3.17 ounces
Manufacturer	Litorange
Package Dimensions	5.55 x 4.53 x 2.13 inches

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

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

2 weeks ago

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

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R402

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered 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 South Africa.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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