Fork seal

Ariete seals - quality and durability.

Ariete's high manufacturing quality matches their unique material – a special elastomer rubber compound known as XNBR

This unique rubber compound has excellent resistance to wear, high temperatures, and various additives contained in lubricants used in today's motorcycle forks.

When the fork moves against the seal, it creates relatively high friction, which is further amplified by the heat generated from friction and hydraulics. This mechanical wear accelerates the aging of the rubber seal. Additionally, the chemical additives in the fork oils also age the seal.

Fork seals are typically made from a nitrile rubber compound, known as NBR.
This is used not because it is the best material for this application, but because it is widely available and very cheap.

After 50 years in the rubber industry, following several years of research and testing, Ariete engineers have concluded that the XNBR rubber compound is currently the best for this application in terms of wear resistance and chemical resistance.

Although the price of XNBR material is almost twice as expensive as NBR, thanks to Ariete's modern manufacturing technology and distribution policy, their price range is very competitive compared to products from competitors using NBR rubber compounds. As a result, the Ariete buyer can enjoy the benefits of a very high-quality, technologically advanced, yet affordably priced product. As an additional guarantee of product quality, Ariete holds an ISO 9002 quality certificate.

Arisil - special seal grease

Ariete fork seals are made to withstand all the different additives used in fork oils. The application of fork seals differs from standard engine oil seals because fork seals involve up-and-down movement. Due to this movement, the wear on the seal is also many times greater than on a standard engine oil seal.
In addition to the special rubber compound used in the seals, Ariete has selected a special grease (Arisil) that is applied to the inner surface of the seal during installation to minimize seal wear, aid in seal 'break-in', and reduce stiction.
This grease is manufactured in the USA and was originally intended as a lubricant for rubber/metal components on NASA space program equipment. Arisil grease gives the seal a longer lifespan, helps maintain elasticity, and increases resistance to chemical influences.

All Ariete fork seal packages contain a sufficient amount of Arisil grease for both seals included in the package.