Description
O-rings are used for static sealing and some dynamic applications.
Features
Cat® O-rings are made from materials compatible with the fluids, temperatures and pressures in Cat engines and machines. These materials resist wear and extrusion, giving the seals excellent compression set resistance. In addition, some Cat O-rings are coated with PTFE to minimize seal twisting and cutting during installation.
Our O-rings are dimensioned to strictly adhere to tight tolerances, ensuring they fit properly in the seal groove with the necessary seal compression.
With more than 2500 different sizes and materials of O-rings, Cat O-rings are the best solution for the O-ring needs of your Cat and other mobile equipment.
Cat sealing systems prevent leaks and contamination of more expensive parts. Protect your investment with Genuine Cat seals.
Applications
O-rings are used in many static and dynamic joints in Cat machines and engines.
Specifications
| Material Hardness | 90A |
|---|---|
| Not Compatible | Automotive and Aircraft Brake Fluids; High Concentration Ozone; Ketones; Phosphate Ester Fluids; Strong Acids; Ultraviolet Light |
| Material Description | Nitrile rubber (NBR) has a service temperature range of -40 to 100C and is resistant to fuel, gasoline, ultra-low sulfur diesel and lubricants. Nitrile rubber is not recommended for applications requiring biodiesel or coolant resistance. |
| Temperature | -40 – 100 °C (-40 – 212 °F) |
| Application | Ambient Temperature Fuel Handling; High and Low Pressure LPG Service; Hydraulic Oil (Up to 10335 kPa/1500 psi); Power Steering Seals; Radiator Thermostat Seals |
| Remarks | Dimensions and material descriptions are for reference only. |
| SAE AS568 Dash Size | None |
| Compatible | Anti-Wear Agents; Alpha-Olefin-Based Synthetic Lubricants; Glycols; Hydrocarbon Fuels; Petroleum-Based Lubricants; Silicone Oils and Greases; Water, Water-Based Engine Coolants; ORFS, STORS Seals |
| Polymer | NBR (Nitrile Rubber) |
| Cross-Section Diameter | 3.5 mm (0.138 in) |
| Inside Diameter | 38.7 mm (1.524 in) |
Compatible Equipment
- Excavators: 336F L XE, 336E H, 336D2 XE, 336E LH, 385C, 365B, 385C L, 385B, 365C, 390D, 365C L, 365B L, 390D L, 374D L
