Fork seal

Ariete seals - quality and durability.

Ariete's high manufacturing quality matches their unique manufacturing material – a carboxylated 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, relatively high friction is generated, 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 oils used in forks 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.

Over 50 years in the rubber industry, after several years of research and testing, Ariete engineers have concluded that 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 compound. Thanks to this, the Ariete buyer can enjoy the benefits of a very high-quality and technologically modern, yet affordably priced product. As an additional guarantee of product quality, Ariete holds the 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, as movement occurs up and down in fork seals. Due to this movement, the wear on the seal is many times greater than that of 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 in NASA's 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.