WTB TCS Tubeless Tire Sealant – 8oz, Ammonia-Free, Injector Cap
The WTB TCS Tubeless Sealant is a water-based, ammonia-free formula designed for reliable puncture sealing and long service life. Built to perform in a wide range of temperatures, it uses mica particles and synthetic latex to quickly seal punctures without drying out prematurely.
Key Functional Details
- 8oz bottle with injector cap for clean installation
- Seals punctures up to 6mm (1/4")
- Ammonia-free formula for longer lifespan and safer handling
- Synthetic latex reduces allergy concerns vs natural latex
- Mica particles and tackifiers improve sealing performance
- Optimized for temperatures down to 15°F (-9.4°C)
- Compatible with WTB and most tubeless tire systems
Technical Specifications
| Brand | WTB |
| Model | TCS Sealant |
| Volume | 8 oz (236 ml) |
| Formula Type | Water-Based Synthetic Latex |
| Ammonia | None |
| Seal Size | Up to 6mm (1/4") |
| Temperature Range | Down to 15°F (-9.4°C) |
| Compatibility | Tubeless Tires & Systems |
| Included | Injector Cap |
| UPC | 714401950962 |
Compatibility & Technical Notes
Good Fit:
- Tubeless-ready road, gravel, and MTB tires
- WTB TCS systems and other tubeless brands
- Riders needing reliable puncture sealing in varied conditions
Not A Fit:
- Tubes (not designed for inner tube use)
- Non-tubeless tire setups
- Extremely large punctures or sidewall tears
Works across most tubeless systems but performs best when paired with properly seated tubeless tires and rims.
Service / Ownership Context
Sealant should be checked and refreshed every 2–6 months depending on climate and riding conditions. Warmer climates will dry sealant faster, while colder climates extend service intervals.
Fit & Use Signals
- Ideal for gravel and MTB riders running tubeless setups
- Good for riders in colder climates needing reliable sealing
- Works well for everyday riding and endurance setups
- Simple installation with included injector cap
This is a solid alternative to traditional ammonia-based sealants—lasts longer and doesn’t dry into rubber chunks as quickly. Customers often wait too long to refresh sealant—educate them on 2–3 month checks. Injector cap is a big advantage—clean installs through valve stem (remove core first). Not great for massive sidewall cuts—still need plugs or boots. Upsell: valve core tool and tire plugs to complete a tubeless repair kit.