O-Rings are used in static sealing and some dynamic applications.

Attributes:
Cat® O-Rings are made from materials that are matched to the fluids, temperatures and pressures found in Cat engines and machines. The materials resist wear and extrusion, and provide superior resistance to seal compression set. In addition, certain Cat O-Rings are coated with PTFE to minimize seal twisting and cutting during seal installation.

Dimensions of our O-Rings are consistently held to tight tolerances to ensure they fit properly into seal grooves with the necessary seal compression.

With over 2500 O-Rings in different sizes and materials, Cat O-Rings are your best solution for your Cat and other mobile equipment O-Ring needs.

Cat Sealing systems protect more expensive parts from leaks and contamination. Protect your investment with Genuine Cat Seals.

Applications:
O-Rings are used in many static and dynamic joints throughout Cat machines and engines.

Mfr Part Number:

144-7339

Material Description:

HNBR rubber is capable of service temperatures of -40 to 115C and is resistant to fuel, oils, lubricants and offers good abrasion and cut resistance.

Material:

HNBR (78),HNBR - Hydrogenated Nitrile,HNBR

Coating:

None

Outside Diameter (in):

62.06

Inside Diameter (in):

2.24

Cross Section Diameter (in):

0.1

SAE AS568 Dash Size:

-140

Hardness (Shore A):

78

Color:

Black

Color Notes:

Actual o-ring color may differ from image.

Notes:

Dimensions and material descriptions provided for reference only.

Applications:

Automotive air conditioner seals | High temperature flex boot seals | High temperature power steering seals | Higher temperature hydraulic seals | Middle cylinder liner seals

Not Compatible With:

Aromatic and oxygenated gasolines | Automotive and aircraft brake fluids | Chlorinated hydrocarbons | Ethers | Ketones | Phosphate ester fluids

Compatible With:

Abrasion resistant | Diesel fuels | Diester lubricants | Ozone | Petroleum oils, greases | Refrigerant HFC - 134a (Non-Freon) | Silicone fluids | Steam | Water base engine coolants

Dash Size (in):

140

Temperature (°F):

-40° - 275°

Seal/O-Ring Type:

Standard

Primary Sealing Material:

Rubber