Stan's Original Tubeless Sealant in a 500 ml bottle. It seals punctures up to 6.5 mm (1/4 in) in tubeless road, gravel and mountain bike tires.

What it's for

The 500 ml bottle is the home mechanic size. It is enough to set up a pair of mountain bike tires and keep sealant on hand for the top ups that follow.

How it works

Sealing: Liquid sealant sloshes inside a tubeless tire. When something punctures the tire, escaping air carries sealant into the hole, where it plugs it. Stan's rates the Original formula for punctures up to 6.5 mm (1/4 in).

Service life: It stays liquid in the tire for 2 to 7 months. Once it dries it no longer seals, so it has to be topped up. In arid climates, check the level more often.

Cold weather: The formula includes anti freeze agents and works down to -20°F.

Compatibility

• Fits: All tubeless road, gravel and mountain bike tires
• Injector: Works with the Stan's Tubeless Sealant Injector for filling through the valve

Sizing and fit

• 700c x 28 mm: 50 ml (1.7 oz) per tire
• 700c x 32 mm: 55 ml (1.8 oz) per tire
• 700c x 40 mm: 60 ml (2 oz) per tire
• 700c x 45 mm: 80 ml (2.7 oz) per tire
• 700c x 50 mm: 95 ml (3.2 oz) per tire
• 27.5 x 2.4 in: 105 ml (3.5 oz) per tire
• 27.5 x 2.5 in: 110 ml (3.7 oz) per tire
• 29 x 2.2 in: 100 ml (3.4 oz) per tire
• 29 x 2.4 in: 110 ml (3.7 oz) per tire
• 29 x 2.5 in: 125 ml (4.2 oz) per tire
• 26 x 4 in: 175 ml (5.9 oz) per tire
• 26 x 5 in: 230 ml (7.7 oz) per tire
• Note: These are Stan's starting amounts. Tire casings vary between brands and some need more.

Setup and installation

• Shake first: Shake the bottle well before you pour so the sealing particles are mixed in
• Adding sealant: Pour it into the tire before seating the last section of bead, or remove the valve core and add it through the valve
• Shop service: OMG's bike shop can set up tubeless tires and refresh sealant

Care and service

• Storage: Keep the bottle sealed, in a cool, dry place out of direct sunlight and away from extreme temperatures

Specs

• Volume: 500 ml
• Coverage: About 4 tires at 110 to 125 ml each, per Stan's chart for 29 in trail tires