095-1720 3.1 x 129.4 mm 90A NBR O-Ring
O-Ring
Wholesale only · Full payment before shipment · Send your machine nameplate to confirm fitment
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 follow 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
| 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 |
|---|---|
| Material Hardness | 90A |
| Not Compatible | Automotive and Aircraft Brake Fluids; High Concentration Ozone; Ketones; Phosphate Ester Fluids; Strong Acids; Ultraviolet Light |
| 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 |
| Temperature | -40 – 100 °C (-40 – 212 °F) |
| Remarks | Dimensions and material descriptions are for reference only. |
| SAE AS568 Dash Size | None |
| 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. |
| Polymer | NBR (Nitrile Rubber) |
| Cross-Section Diameter | 3.1 mm (0.122 in) |
| Inside Diameter | 129.4 mm (5.094 in) |
| Material | NBR (90) |
Compatible Equipment
- Generator Sets: 3512B
- Mini Excavators: 310, 307C, 307D, 307E2, 307, 308, 308.5, 308E2
- Excavators: 326D L, 326GC, 329E L, 325D L, 323D, 324D, 320D L, 320 GC, 329D L, 330 GC, 323D L, 323D2 L, 328D LCR, 330D2, 324D L, 330GC, 330D2 L, 320D FM, 325D, 320D2 L, 329E, 326, 335F LCR, 325, 333 GC, 326 GC, 320, 395, 320D2 GC, 320D2, 330, 308E, 326D2 L, 308D, 326D2, 329D2 L, 320D, 307E, 329D, 329D2
- Wheel Loaders: RM500B, 926M
Additional information
| Machine Model | 307, 307C, 307D, 307E, 307E2, 308, 308.5, 308D, 308E, 308E2, 310, 320, 320 GC, 320D, 320D FM, 320D L, 320D2, 320D2 GC, 320D2 L, 323D, 323D L, 323D2 L, 324D, 324D L, 325, 325D, 325D L, 326, 326 GC, 326D L, 326D2, 326D2 L, 326GC, 328D LCR, 329D, 329D L, 329D2, 329D2 L, 329E, 329E L, 330, 330 GC, 330D2, 330D2 L, 330GC, 333 GC, 335F LCR, 3512B, 395, 926M, RM500B |
|---|---|
| Equipment Type | |
| Part Source | Genuine OEM |








