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A published maximum hole size, and a UV dye to find leaks

Muc-Off No Puncture Hassle sealant, 1 L

The best-selling sealant here: a liter stated to seal holes up to 6 mm (0.24 in), lasting up to six months in moderate climates, with a UV dye for finding leaks.

Muc-Off No Puncture Hassle tubeless sealant, one liter bottle

Muc-Off No Puncture Hassle sealant, 1 L

The best-selling sealant here: a liter stated to seal holes up to 6 mm (0.24 in), lasting up to six months in moderate climates, with a UV dye for finding leaks.

Volume
1 liter
Seals to
6 mm (0.24 in)
Service life
up to 6 months in moderate climates
Extra
UV detector dye
Amazon reference
B07DNP89TD (identical on 6 markets)
EAN
5037835825008
  • Rank 707, the best-selling sealant here
  • A published maximum hole size — 6 mm (0.24 in) — which is the figure that decides whether a cut seals
  • The manufacturer states up to six months, which is a service interval you have to keep

Best for: Mountain bike and gravel riding, where the cuts are larger and the 6 mm (0.24 in) figure is the one that matters.

≈ $74
Check price on Amazon

Specifications

Volume
1 liter
Seals to
6 mm (0.24 in)
Service life
up to 6 months in moderate climates
Extra
UV detector dye
Amazon reference
B07DNP89TD (identical on 6 markets)
EAN
5037835825008

Muc-Off’s sealant is the best-selling one here, and it publishes the two figures that actually matter.

What the manufacturer publishes

Compatibility for converting to tubeless. Sealing of cracks and holes up to 6 mm (0.24 in) through high-performance molecules. A service life of up to six months in moderate climates. A UV detector dye for identifying holes.

Why the 6 mm (0.24 in) figure is the important one

Sealant performance is usually described in adjectives. A maximum hole size is a number you can plan around: under 6 mm (0.24 in) and the tire seals itself while you ride, over it and you need a plug in your saddle bag.

It is also honest about the limit, which is more useful than an unqualified claim.

The six-month interval

Stated for moderate climates, and shorter in heat. This is the part of tubeless that catches people out — the sealant is a consumable with a schedule, and a tire running dry sealant has no protection at all despite looking identical from outside.

The UV dye

Genuinely clever. A tire losing pressure slowly is hard to diagnose: the hole is tiny and it may only leak under load. A dye that fluoresces under UV shows exactly where.

The tools this needs

Valves with removable cores, so sealant can be injected through the valve. Without them, a top-up means breaking the bead.

The questions riders ask

What does sealing to 6 mm (0.24 in) mean in practice?

A hole up to 6 mm (0.24 in) across is expected to seal without intervention. Larger cuts need a tubeless plug. It is the most useful single figure a sealant can publish, and few do.

What is the UV dye for?

A slow leak that seals imperfectly leaves a trace of sealant at the hole. A UV torch makes it fluoresce, so you can find exactly where the tire is losing air rather than guessing.

More tubeless sealant and valves

  • Orange Seal Endurance tubeless tire sealant 16 oz refill bottle

    Orange Seal Endurance sealant refill, 473 ml

    A 473 ml refill of latex Endurance sealant, sealing punctures to 6.35 mm (0.25 in) and slices to 12.7 mm (0.50 in), with 60 to 120 days between top-ups.

    Volume
    16 oz (473 ml)
    Price per ml
    4.9 cents
    Base
    Latex, with nanite particles
    Seals punctures to
    1/4" (6.35 mm (0.25 in))
    Seals slices to
    1/2" (12.7 mm (0.50 in))
    Service interval
    60–120 days between top-ups
    Durability claim
    2–3× longer than standard sealants
    Casing
    No delamination or rubber damage, stated
    Injector
    Not included — the 8 oz kit here has one
    Shipping weight
    118 g (4.2 oz) on the record, which is impossible for 473 ml
    Temperature range
    Not published
    CO2
    Not addressed
    Amazon reference
    B015M09IQ4
    EAN
    0810026601101
    • The only sealant on this shelf to publish a slice figure as well as a hole figure
    • A service interval given as a range, 60 to 120 days, rather than a ceiling
    • No injector — buy the 8 oz kit first, then refill with this

    Best for: Topping up an Orange Seal setup already equipped with an injector

    Check price on Amazon
  • Orange Seal Endurance tubeless sealant 8 oz bottle with injector

    Orange Seal Endurance 237 ml + injector

    A 237 ml bottle of latex Endurance sealant with an injector, sealing punctures to 6.35 mm (0.25 in) and slices to 12.7 mm (0.50 in).

    Volume
    8 oz (237 ml)
    Injector
    Included — capacity not published
    Price per ml
    8.2 cents, against 4.9 for the 473 ml refill
    Base
    Latex with nanite particles
    Seals punctures to
    1/4" (6.35 mm (0.25 in))
    Seals slices to
    1/2" (12.7 mm (0.50 in))
    Service interval
    60–120 days
    Weight
    227 g (8 oz)
    Casing
    No delamination or rubber damage, stated
    Particle size
    Not published
    Temperature range
    Not published
    CO2
    Not addressed
    Amazon reference
    B07YF3JQF8
    EAN
    0810026608100
    • The only item here that supplies both sealant and injector
    • Publishes both a hole figure and a slice figure, alone on this shelf
    • 8.2 cents a milliliter against 4.9 for the same sealant in 473 ml

    Best for: A first tubeless setup, with the 473 ml refill bought next time

    Check price on Amazon
  • Schwalbe Doc Blue Professional tubeless sealant bottle, 200 ml

    Schwalbe Doc Blue Professional, 200 ml

    A 200 ml bottle of Schwalbe's Doc Blue Professional sealant, sized for preventive use and for tubeless conversion on Schwalbe tires.

    Volume
    200 ml
    Use
    Preventive and tubeless conversion
    Description
    Environmentally friendly, seals small holes and punctures
    Amazon reference
    B0BRKYK322 (identical on 6 markets)
    EAN
    4026495896139
    • Rank 1,224, and the cheapest way into tubeless sealant here
    • A 200 ml bottle, which is roughly one to two wheels depending on tire size
    • Two hundred milliliters does not go far on wide tires

    Best for: A first tubeless setup, or topping up an existing one on road or gravel tires.

    ≈ $73
    Check price on Amazon

Elsewhere in the spares drawer

  • Prophete ergonomic bicycle grips in black, showing the alloy clamp

    Prophete Ergo grips, pair, 132/98 mm

    A pair of ergonomic grips with alloy screw clamps, in asymmetric lengths — 132 mm (5.20 in) and 98 mm (3.86 in) — designed for handlebars with a twist shifter.

    Lengths
    132 mm (5.20 in) left, 98 mm right
    Clamp
    Alloy screw fixing
    Compatibility
    Bars with twist shifters
    Shape
    Ergonomically formed
    Amazon reference
    B0825B9L2Q (identical on 6 markets)
    EAN
    4009208055771
    • Asymmetric lengths, which is what a twist shifter actually needs
    • Alloy screw clamps rather than slide-on, so they cannot rotate in the wet
    • The asymmetric lengths are wrong for a bike without a twist shifter

    Best for: A city or trekking bike with a twist shifter, where a symmetric grip pair does not fit.

    ≈ $40
    Check price on Amazon
  • Gindoly ergonomic lock-on bicycle grips with locking rings

    Gindoly Ergonomic lock-on grips, triple density

    Ergonomic lock-on grips with an alloy clamp bolt and a triple-density construction, shaped for full palm contact.

    Fitting
    Lock-on with alloy clamp bolt
    Construction
    Triple density
    Surface
    Non-slip diamond pattern
    Shape
    Full palm contact
    Amazon reference
    B07V6RJRPJ (identical on 3 markets)
    EAN
    0667763753989
    • Triple-density construction, so the palm area and the finger area can differ in firmness
    • A locking ring on top, positioned where it is most effective
    • Not listed on the US, Italian or Spanish markets

    Best for: Flat-bar riders with hand discomfort on longer rides, where a wing shape spreads the load.

    Search Amazon for this model
  • BV black EVA road bike handlebar tape, two rolls

    BV EVA bar tape, 2 rolls, 3M adhesive

    Two rolls of ultra-light EVA foam handlebar tape with a 3M adhesive backing.

    Contents
    2 rolls
    Material
    Ultra-light EVA foam
    Adhesive
    3M backing — coverage not stated
    Weight
    80 g (2.8 oz) the set
    Price
    $9.99
    Second listing
    B072WBCT91, same reference and bullets, $11.99
    Thickness
    Not published
    Length and width
    Not published
    End caps
    Not mentioned
    Finishing tape
    Not mentioned
    Amazon reference
    B0C2B6HKYY
    EAN
    0811853034353
    • Names 3M as the adhesive maker, which nothing else here does
    • Two rolls at $9.99
    • Publishes no thickness, length or width

    Best for: A cheap re-wrap in dry weather, where the adhesive matters more than the figures

    Check price on Amazon

All tubeless sealant and valves

Prices quoted in these summaries are dated readings. The live price is shown next to each product.