Rulon® materials are used extensively inside machinery as bushings, washers and piston rings, replacing expensive metal roller bearings or multi-component linear guide rings. Our materials exhibit good chemical compatibility, including good wear properties, and performs well both in low friction and low thermal expansion conditions.
The piston ring can be designed and manufactured into special shapes to accommodate typical dimensional tolerances.
-240°C to +288°C
(-400°F to +550°F)
1000 psi (69 bar)
Up to 20 m/s depending on combination with applicable pressure.
Standard sizes available up to 150 mm, larger sizes available on demand
0.2 to 0.4 Ra
Rulon® AR is a light maroon colored material best known as the current version of the first Rulon® introduced, namely Rulon A. While often compared to another in the series, Rulon® LR, it is somewhat more flexible than its counterpart, and is therefore suitable for seals and bonded coating of slide surfaces, especially when those applications require higher physical properties than Rulon® LR can provide. It is also practically chemically inert, and provides long life and reliability in continuous non-lubricated service.
Rulon® LR is compatible with most hardened steel substrates. Mild steel is acceptable; harder running surfaces are better.
Rulon® LR has a practically universal chemical inertness. Of the chemicals encountered in commercial practice, only molten sodium and fluorine, at elevated temperatures and pressures, show any sign of attack.
Rulon® 142 / 142S / 242 materials are specially formulated dull blue-green linear bearing formulations that exhibits low wear, high thermal dissipation, and good dimensional stability characteristics. They are metal filled polymer material solutions used for dimensional stability, vibration and wear resistance.
Rulon® W2 is a black PTFE-based Carbon Filled polymer material solution developed for use in fresh-water applications. It exhibits low friction and excellent wear characteristics (one of the lowest wear rates in fresh water) as well as good thermal dissipation, preventing shaft distress. Its properties are enhanced when wet and the material does not absorb water.
Rulon® 641 is manufactured from FDA and USDA compliant materials possessing excellent loads and wear characteristics while meeting the requirements for USP Class VI.
It offers excellent, continuous non-lubricated service up to 10,000 PV – higher for intermittent service. While the load capacity of Rulon® 641 is generally limited to 1,000 psi (6.9 MPa) at room temperature, deformation is a function of wall thickness, temperature and load.
Rulon® J is an all-polymeric reinforced, dull gold colored PTFE compound that operates exceptionally well against soft mating surfaces such as 316 stainless steel, aluminum, mild steel, brass and other plastics. The unique “shaft friendly” material is also low in friction and wear, and self-lubricating.
Meldin® polyimide material solutions exhibit high dimensional stability at high temperatures and longer life at higher loads and speeds. With Omniseal Solutions, total control on the process from the powder to the parts is guaranteed. Solutions include bearings, wear components, piston rings, vanes, thrust washers, and of course seals. This is in addition to custom shapes, rods, sheets, and tubes. These solutions are found in a multitude of industries such as aviation, industrial, semi-conductor, space, and life science.
Omniseal® piston rings are sealing components used in medium to high-pressure rotary systems to reduce friction and wear while ensuring consistent sealing performance.
Omniseal® piston rings are made from Rulon®, Meldin® Thermoplastic and Meldin® Polyimide compounds, providing high wear resistance, low friction, chemical compatibility, and excellent dimensional stability.
Each piston ring is designed to match the requirements of the application, so the material grades can vary significantly. Benefits could include temperature resistance, maintenance free applications, dry wear resistance, and insulation. But these are just examples.
Industries include nuclear research, semiconductor manufacturing, marine, consumer appliances, and precision machinery.
Omniseal Solutions offers worldwide engineering expertise, custom material formulations, and precision manufacturing for tailored sealing performance.
