is this C02 compatible

Most likely.... Alot of bike shops or enthusiast's use compressors to inflate tyres after applying tubeless sealant to seat the tyre etc and I've seen riders carry c02 cartridges out on the trails to re-inflate tyres.

Does this 1 litre bottle come with a tube to pour into valve?

Yes, came with a clear rubber tube that goes over the valve

Can this be added to tyres that have another brand of tyre sealant already in the tyre

There's no way of us answering this without knowing what the other sealant is. Best option is to wipe out the old sealant, properly clean anything off the bead, seal and top up again. If you're going tubeless then you'll be wanting to check sealant levels and re-seat the tyres every 6 months or so so best to start again with a single mixture.

How many wheels does 1 litre do?

Depends on wheel and tyre size, but approx 10 for a 27.5 wheel mtb. There is a guide on the back of the bottle

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MTB Tubeless Sealant, 1L

Product ID: 71144787

Details

Brand
Muc-Off
Item dimensions L x W x H
8 x 8 x 28
Item weight
1.05 Kilograms
Material
Rubber
Style
Down

⏳Lasts up to 6 months

🔦UV dye for easy puncture detection

🛠️Seals punctures up to 6mm

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Description

🚵‍♂️ Seal the deal, ride the thrill!

TRUSTED BY TOP RIDERS - Developed alongside enduro and downhill pros, this sealant is your ultimate MTB puncture defense.
LONG LASTING PROTECTION - Stay trail-ready for up to six months without reapplying—durability that matches your adventure pace.
UV DYE FOR PRO LEVEL INSPECTION - Spot hidden punctures instantly with UV light, ensuring your ride stays smooth and safe.
UNIVERSAL TUBELESS COMPATIBILITY - Works seamlessly with tubeless-ready and UST wheels, plus CO2 compatible for quick mid-ride fixes.
RIDE FEARLESSLY WITH INSTANT SEAL - Advanced formula seals holes and tears up to 6mm fast, so you never miss a trail moment.

Muc-Off MTB Tubeless Sealant is a high-performance, 1L liquid sealant designed to quickly seal punctures up to 6mm in tubeless-ready and UST mountain bike tires. Featuring a UV dye for easy puncture detection and a durable formula lasting up to six months, it offers reliable, professional-grade protection trusted by top MTB riders.

Specifications

ASIN	B07DWCGCK6
Best Sellers Rank	399 in Automotive ( See Top 100 in Automotive ) 2 in Motorbike Wheels & Rims
Brand	Muc-Off
Colour	pink
Compatible Material	Rubber
Customer Reviews	4.6 4.6 out of 5 stars (5,042)
EU Spare Part Availability Duration	6 Months
Global Trade Identification Number	05037835822007
Included Components	Nothing
Item Dimensions	8 x 8 x 28 centimetres
Item Form	Liquid
Item Highlight	Advanced Tubeless Tyre Sealant with UV Dye, Seals Holes up to 6mm, Lightweight Formula for Mountain and Enduro Bikes
Item Type Name	Accessory
Item Weight	1.05 Kilograms
Manufacturer	Muc-Off Ltd
Manufacturer Part Number	822
Material	Rubber
Model Number	822
Number of Items	1
Number of Packs	1
Product Warranty	Producer
Style Name	Down
Surface Recommendation	Floor
UPC	779420541201
Unit Count	1000.0 millilitre
Water Resistance Level	Not Water Resistant

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€ 52.28

Duties & taxes included

In stock

Sold byAmazon PortugalDelivered 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 Portugal.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Rajesh P.

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

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