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.
Temperature Resistance
-240°C to +288°C
(-400°F to +550°F)
Pressure
1000 psi (69 bar)
Max Speed
Up to 20 m/s depending on combination with applicable pressure.
Dimensions
Standard sizes available up to 150 mm, larger sizes available on demand
Surface Finish
0.2 to 0.4 Ra
Proven Examples
Rulon® Fluoropolymers
AR PTFE
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.
Used in
Suitable for seals and bonded coating of slide surfaces.
Rulon® Fluoropolymers
LR PTFE
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.
Used in
consumer bearings or wear components, Industrial bearings; and Energy spring inserts and slide bearings.
Rulon® Fluoropolymers
142 / 142S / 242 PTFE
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.
Among their many benefits are the virtual elimination of stick-slip, vibration dampening, self-lubrication, uniform friction, long life, ease of application and design diversity. They are low deformation materials suitable for linear bearings and slides.
Used in
Virtual elimination of stick/slip, uniform friction, high thermal dissipation, and good stability.
Rulon® Fluoropolymers
W2 PTFE
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.
Used in
Developed for use in fresh-water applications, Rulon® W2 is a good alternative to Rulon® J when superior chemical resistance is needed.
Rulon® Fluoropolymers
641 PTFE
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.
Used in
A good choice for most food and pharmaceutical bearing applications.
Rulon® Fluoropolymers
J PTFE
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.
Used in
Polymer filled material solution used for low friction, soft shaft and extreme cold temperature.
Meldin® Polyimides
High Temperature Polymer Material Solutions
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.
Used in
where high thermal resistance and good mechanical properties are required
