Caterpillar

Select Equipment

Select equipment to view parts that fit your equipment.
No suggested results. Try again.
Register
Caterpillar

Add Equipment

To find the parts that fit.To find the parts that fit.
Search for part number or name

Select Equipment

HomeHardware, Seals, & ConsumablesSeals, Gaskets, & O-RingsO-Rings5P-4057: 760mm Inner Diameter O-Ring Seal
HomeHardware, Seals, & ConsumablesSeals, Gaskets, & O-RingsO-Rings5P-4057: 760mm Inner Diameter O-Ring Seal
5P-4057: 760mm Inner Diameter O-Ring Seal

O-ring

Brand: Cat

To watch these videos, you need to accept the use of cookies.

Cookie Settings
Product Images
5P-4057: 760mm Inner Diameter O-Ring Seal
5P-4057: 760mm Inner Diameter O-Ring Seal
5P-4057: 760mm Inner Diameter O-Ring Seal
5P-4057: 760mm Inner Diameter O-Ring Seal
5P-4057: 760mm Inner Diameter O-Ring Seal

O-ring

Brand: Cat

Add your equipment to see if this part fits or if there are repair options available.
Will It Fit?Add your equipment to see if this part fits or if there are repair options available.
Add Equipment
Will it fit or looking for a repair?Add your equipment to see if this part fits or if there are repair options available.
Check Price
Check Price
Login to view your customer price
Warranty Information
Return Policy
Description
Description

Description:
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.

Warning:This product can expose you to chemicals including 1,3-Butadiene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Description:
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.

Warning:This product can expose you to chemicals including 1,3-Butadiene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Specifications
Specifications
Units of MeasureUSMetric
Cross Section Diameter (in): 0.21
Inside Diameter (in): 29.921
Material: NBR - Nitrile,NBR (75),Nitrile (NBR),Nitrile / NBR / HNBR / XNBR Rubber
Polymer: NBR (Nitrile butadiene)
Material Hardness: 75A
Units of MeasureUSMetric
Cross Section Diameter (in): 0.21
Inside Diameter (in): 29.921
Material: NBR - Nitrile,NBR (75),Nitrile (NBR),Nitrile / NBR / HNBR / XNBR Rubber
View More
Compatible Models
Compatible Models
Track-Type Tractor
D6H XLD7RD6H XRD6T XWD6T LGPD7HD6R IIID6T XLD7R SERIESD6D8D7D8TD8RD6GCD8GCD8ND6H IID11ND6R STDD6XED10D11D7R LGPD8 GCD6T LGPPATD8R IID11RD11TD6T XL PATD6T XW PATD6 XED7R IID6R XLD6RD6TD6R LGPD6R IID7R XRD6H
Generator Set
3508B
Ripper
1110768
Pipelayer
PL83PL87583T583R587T587RPL72578572R572R II
Truck
793F CMD797793F OEM793F XQ793F795F AC797B
Petroleum Transmission
TH55-E70TH55FT-E90
Petroleum Engine
3516C
Water Fording Tractor
D7R II
Bulldozer
8U610C7SU6A6S11U7A10S7S7U6SU10U11SU8SU7S LGP8A
Off Highway Truck
793F793
Winch
57H575656H
Wheel Loader
992D992C
View More
Track-Type Tractor
D6H XLD7RD6H XRD6T XWD6T LGPD7HD6R IIID6T XLD7R SERIESD6D8D7D8TD8RD6GCD8GCD8ND6H IID11ND6R STDD6XED10D11D7R LGPD8 GCD6T LGPPATD8R IID11RD11TD6T XL PATD6T XW PATD6 XED7R IID6R XLD6RD6TD6R LGPD6R IID7R XRD6H
Warranty Information
Return Policy
Parts Diagrams
No EquipmentEnter equipment serial number or choose equipment from previously added list to see parts diagrams.
Select Equipment
Frequently bought together
5P-40575P-4057
5P-58465P-5846
8M-43908M-4390
View All Parts
Frequently bought together
5P-4057
5P-5846
8M-4390
5M-3038
8M-4432
2D-6506
DiagramDescriptionSpecificationsCompatible Models
Parts diagram for 5P-4057
View Detailed Parts Diagrams
Add Your Equipment
Description for part number 5P-4057

Description:
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.

View More
Warning:This product can expose you to chemicals including 1,3-Butadiene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Specifications for part number 5P-4057

Units of Measure

USMetric
Cross Section Diameter (mm): 5.33
Cross Section Diameter (in): 0.21
Inside Diameter (mm): 760
Inside Diameter (in): 29.921
Material: NBR - Nitrile,NBR (75),Nitrile (NBR),Nitrile / NBR / HNBR / XNBR Rubber
Polymer: NBR (Nitrile butadiene)
Material Hardness: 75A
View More
Compatible Models for part number 5P-4057

TRACK-TYPE TRACTOR

D6H XL D7R D6H XR D6T XW D6T LGP D7H D6R III D6T XL D7R SERIES D6 D8 D7 D8T D8R D6GC D8GC D8N D6H II D11N D6R STD D6XE D10 D11 D7R LGP D8 GC D6T LGPPAT D8R II D11R D11T D6T XL PAT D6T XW PAT D6 XE D7R II D6R XL D6R D6T D6R LGP D6R II D7R XR D6H

GENERATOR SET

3508B

RIPPER

11 10 7 6 8

PIPELAYER

PL83 PL87 583T 583R 587T 587R PL72 578 572R 572R II

TRUCK

793F CMD 797 793F OEM 793F XQ 793F 795F AC 797B

PETROLEUM TRANSMISSION

TH55-E70 TH55FT-E90

PETROLEUM ENGINE

3516C

WATER FORDING TRACTOR

D7R II

BULLDOZER

8U 6 10C 7SU 6A 6S 11U 7A 10S 7S 7U 6SU 10U 11SU 8SU 7S LGP 8A

OFF HIGHWAY TRUCK

793F 793

WINCH

57H 57 56 56H

WHEEL LOADER

992D 992C

View More
KeyKey
Factory Fit

This part is designed to fit your Cat equipment based on the manufacturer’s specifications.

Any changes to the manufacturer’s configuration might result in the product not fitting your Cat equipment. Please consult your Cat Dealer before purchasing to ensure that this part is appropriate for your Cat equipment in its current condition and assumed configuration. This indicator cannot guarantee compatibility for all parts.

Remanufactured

Non-Returnable

Kit

Replaced

Remanufactured

Non-Returnable

Kit

Replaced

Find Parts
Support
My Account
Cat Social
United States EnglishالعربيةবাংলাБългарски简体中文繁體中文ČeštinaDanskNederlandsSuomiFrançaisDeutschΕλληνικάעבריתहिन्दीBahasa IndonesiaItaliano日本語ಕನ್ನಡ한국어NorskPolskiPortuguês do BrasilRomânăРусскийEspañol (Latino)Svenskaதமிழ்తెలుగుไทยTürkçeУкраїнськаTiếng Việt
About Cat
Site Map
Cookie Settings
Do Not Sell or Share My Personal Information
Legal Terms
My Marketing Preferences
Privacy

Caterpillar© 2025 All Rights Reserved

Find Parts
    Support
      My Account
        Cat Social
          Language
            CAT Sites
              About Cat
              Site Map
              Cookie Settings
              Do Not Sell or Share My Personal Information
              Legal Terms
              My Marketing Preferences
              Privacy

              Caterpillar© 2025 All Rights Reserved

              Chat with an expert