1254641 O-Ring Seal fit Caterpillar
1254641 O-Ring Seal fit Caterpillar
- New aftermarket part
- 30 day returns
- Manufacturer's warranty
1254641 O-Ring Seal
O-ring seal for Caterpillar equipment, used in hydraulic, engine, steering, air-conditioning and cylinder-liner sealing applications. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).
Fitment
The seal is listed for the following Caterpillar equipment models and machine categories:
- Mini hydraulic excavators: 305.5 GC, 306E, 305.5E, 305.5E2, 306, 306.5, 306E2
- Industrial engines: 3408, 3408B, 3408C, 3408E, 3412, 3412C
- Machine engines: 3408
- Generator-set engines: 3412C
Cross-reference numbers
- Caterpillar catalog reference: 125-4641
- Product SKU: 1254641
Specifications
| Part type | O-ring seal |
| Equipment brand | Caterpillar |
| Application | Automotive air-conditioning seals, flexible high-temperature bellows seals, high-temperature power-steering seals, high-temperature hydraulic seals and middle cylinder-liner seals |
| Material | Hydrogenated acrylonitrile-butadiene rubber (HNBR), compound designation 78 |
| Coating | PTFE (polytetrafluoroethylene) |
| Color | Orange |
| Hardness | 78 Shore A |
| Temperature range | −40 to 275 °F |
| Cross-sectional diameter | 0.28 in |
| Inner diameter | 3.19 in |
| Outer diameter | 3.739 in |
| SAE AS568 dash size | Not available |
| Approximate weight | 0.3 lb |
| Package length | 10 cm |
| Package width | 10 cm |
| Package depth | 0.6 cm |
Media compatibility
The HNBR material is specified for use with abrasive operating conditions, diesel fuel, petroleum oils, lubricants, lubricants based on complex esters, silicone fluids, steam, water-based engine coolants, ozone and HFC-134a refrigerant without freon.
The material is not specified for aromatic or oxidized gasoline, automotive or aviation brake fluids, chlorinated hydrocarbons, ethers, ketones or liquids based on phosphoric acid esters. It is also not intended for diesel biofuel.
Material information
- HNBR is used in sealing applications involving air, engine oil, diesel fuel, hydraulic oil and automatic transmission oil.
- Some HNBR compositions may be used with coolant and urea; suitability depends on the specific operating medium.
- The actual seal color may differ from a product image.
- Dimensions and material data are reference values for part identification.
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