Rulon® 488 is a dull turquoise material originally developed for use with painted surfaces. It has been used in veneer dryer bearings in the plywood industry.
Its excellent wear resistance, especially in extremely dry environments, make it a material of choice in hydrogen and natural gas compressors. Its almost universal chemical resistance enables it to withstand corrosives and acids sometimes present in trace amounts in these environments.
It has a higher load capacity than Rulon® J and better abrasion resistance than both Rulon® J and Rulon® 123.
Typical Product And Application Description
Products Applications | |
• Automatically molded bearings & components | • Pumps |
• Sleeve, flanged and thrust bearings | • Mixers |
• Piston rings | • Compressors |
• Stamped and formed seals | • Appliances |
• Extruded shapes | • Automotive |
• Machined parts | • Insulators |
• Molded shapes | • Linear slides |
• Pipe support | |
• Wear bands |
Design Criteria RULON® 488
Temperature - Typical Range ˚F (˚C) | -400/+550 (-240/+288) |
Maximum PV (continuous)(MPa•m/s) | 10,000 (0.35)* |
Maximum P - psi (static)(MPa) | 1,000 (6.9)* |
Maximum V -SFM (no load)(m/s) | 400 (2)* |
Shaft Hardness - Minimum | Rb25 |
Shaft finish recommended Ra µin(µm) | 8 - 16 (0.2-0.4)* |
Shaft Material | Hard, mild and stainless steels |
Engineering Information | |
Friction - static & dynamic | 0.10 - 0.30 |
Water Absorption ASTM D570 | 0 |
Flammability ASTM D635 | Non-Flammable |
Chemical Resistance | Inert |
Thermal Conductivity BTU/hr/sq. ft./˚F/in. (W/m•K) | 2.6 (0.37)* |
Linear Coefficient of 78˚ to 300˚F Thermal Expansion (26˚ to 149˚C) x 10 -5 in/in °F (x 10 -5 m/m °C) | Diameter 4.2 (7.5)* Length 5.7 (10.2)* |
Physical Data | |
Elongation ASTM D4894 | 1.75 |
Tensile Strength ASTM D4894 (MPa) | 2000 psi (13.8)* |
Deformation ASTM D621 | 4% (1500 psi - 24 hr. RT) |
Specific Gravity ASTM D792 | 2.25 |