BOR Tubeless Sealant

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  • 0,5 Liter (ca 1 Pint) --- 15,90 €
  • 1,0 Liter (ca 2 Pint) --- 24,90 €
15,90 €
inkl. 19% Mwst.
13,36 € Netto
Art-Nr. :
“B.O.R Tubeless Sealant”
Our Sealant is manufactured in Germany!
“Regular” tyres
“Tubeless-Ready” tyres
“UST” tyres
Can also be used in golfcarts, wheelbarrows as puncture protection
Pressure range 1,8 to 5.5 BAR
Important: Always pay attention to tyre or rim limitations!
All tubeless parts can be ordered separately.
Test Winner in “Bike”-Magazin 10/2007
10 years of “Tubeless” and ultra-light Alloy Rims!

Long before the official launch of “B.O.R Germany” in 2009 its founders
started developing and manufacturing Tubeless Sealant and light Tubeless-
Ready rims
for individual customers.
Being the test winner in Europe’s biggest MTB magazin in 2007 (“Tubeless-
Test”, the”Bike Magazin” 10/2007) the first step had been made for our own
B.O.R Tubeless Kit and the beginning of “B.O.R Germany”!

In the last 10 years B.O.R rims won countless victories and podium finishes
at Cape Epic, Transalp, Trans-Germany, world cups, 24h world champion
ships, etc. and have been (beside Notubes rims) state of the art reference
rims regarding low weight and Tubeless-Readyness. They have also found,
specifically in the last 4-5 years, many followers (Ryde, NewMen, American
Classic, Pacenti oder WTB) in Europe, most of which, in contrast to B.O.R rims,
are not produced in Europe but in Far East!

When hearing the word, “tubeless“ most people probably get the rough idea what it’s all about. Many know how to install the system, at least the one they’re using but are not always familiar with the differences between existing systems and components.
Physically, the main difference between “Tubeless Ready“ and “normal“ rims is that the distance between the bead hook (i.e. rim flange) and the rim bed (base) is narrowed without shortening the flange.
As a result on Tubeless-ready rims, each rubber stub (rubber bulge) surrounding the anchor bead generates a tightly fit seal between bead hook and rim base when the tyre is under pressure. That is why a tape (Tubeless Tape) is needed to close off the system between tire and base as well as the nipple holes. A sealant then closes up the last tiny gaps.
The big hype of using latex-based sealant happened between 2005 and 2010. During these early years, tubeless bikers tried to “lighten” their load by using MTB folding tyres and eliminating inner tubes. However, tyres then had a certain level of tolerance regarding the anchor bead. Skill and patience was required to get the system tight!
The problem was solved by compensating tolerances with added rubber around the anchor bead and lower carcass or even by minimally reducing the anchor bead diameter. This physical solution found many different names such as “Tubeless Ready,” “TL Easy” (Tubeless Easy), “TR” (Tubeless Ready), “SCT” (Sealant Compatible Tyre) and so on. With these enhancements, a latex-based tubeless system was relatively easy and worry-free, especially when using together with “Tubeless Ready” rims.
All tubeless systems are not equal. The ideology of MTB tubeless systems is based on the same principles as those used in automobile tyres: UST = Universal System Tubeless; a wheel in combination with a tyre of high rubber proportion is closed off at the rim base.
The disadvantages of UST rims are more wheel weight and an unconventional attachment of spokes and nipples. UST tyres are usually much heavier than their tubeless-ready or normal versions and still end up occasionally losing air, which is why many UST-Bikers still add sealant in their tyres!
The number of “pure” UST systems is diminishing because their lighter-weight latex-based Tubeless Ready rim and tyre rivals are replacing them.
Latex-based Tubeless Kits usually contain “rim tapes”, “sealants” and valves.
The success of B.O.R Tubeless Kits started by becoming the 2007 test winner in Europe’s most popular MTB magazine (“Bike”, 10/2007). Presently, there are around 8-10 slightly similar products existing worldwide.
The disadvantages of natural latex-based sealants are due to their natural water content; they lose their viscosity and sealant effects at lower temperatures and below freezing point even risk crystallisation.
Synthetic latex-based sealants can work at lower temperatures. However, these generally do not provide the same sealant properties as their natural counterpart.
With a latex-based tubeless system the following benefits can be achieved:

Puncture protection

Reduction of rolling / moving mass

Reduction in rolling resistance

Increase of traction, less tyre pressure needed


Make sure that the rim bed is cleansed and grease-free!

Start by using the White Tape, placing it 4-6 inches (10-15 cm) from the valve hole. Install the rim tape in the direction of the valve hole, covering it up first.

Continue applying the White Tape all around the rim bed, pulling at it with a light pressure. Using your fingertips, guide the tape to the middle of and rub it flat onto the rim bed. The White Tape must be free of air bubbles!

Once you have reached the valve hole again, continue taping for another 4-6 inches (10-15 cm) and cut it there. The White Tape should now have been installed all around the rim, covering the valve hole twice!

Having already used your fingers to rub the White Tape onto the middle of the rim bed, do the same for the edges of the rim tape under either side of the rim flanges. You may also use a clean and grease-free cloth to do this.

After having installed the tape, prick a small hole in the tape in the middle of the rim valve hole. Remove the knurled nut from a tubeless valve and transpierce the hole in the tape with the valve. Tightly screw the knurled nut onto the valve stem. The large square rubber bulge of the B.O.R. valve will keep the valve from slipping through the hole.

If you have little experience with tubeless systems or are using regular wire bead tyres, we recommend performing a trial WITHOUT sealant first. To do this; mount the tyre, remove the valve core from the valve stem and plug the valve stem into the compressor Presta inflator head. Removal of the valve core will allow more volume and a faster airflow. If the tyre has been mounted correctly, it should “pop” fairly quickly into its correct position along the rim flange! This trial can easily be used to check if the White Tape is leak-proof and has been installed correctly if little or no air escapes the tyre.

If you wish to skip or if you have successfully performed the trial, fill your tyre before mounting the second half onto the rim with 2.5-4 oz (70-120 ml) of latex sealant. Then carefully fit the second half of the tyre onto the rim. You may also simply mount the tyre, leaving a 10-20% gap on one side, fill the sealant inside the tyre through the gap and then fit the rest of tyre onto the rim.

When using “Tubeless-Ready” tyres you usually do not even need a compressor. A normal floor pump should work just fine.

Once you have mounted, sealed and inflated the tyre remove the compressor Presta inflator head and rapidly screw the valve core back into the valve stem. You may use your fingers to block the air from escaping through the sides of the valve core while screwing. If you are quick enough, you should only lose about a third of the air pressure in the tyre. This way, your tyre’s form will remain in its correct position. You may now pump the tyre to the desired pressure. Please make sure to respect the tyre and rim manufacturer’s min and max pressures!

Lastly, to make sure the sealant is dispersed regularly inside the tyre and miniature pores are clogged, swivel the wheel and beat both sides of the tyre on the floor all around. Small pores usually seal best using a pressure between 15-25 PSI (1.0-1.8 bar).