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BackHomeHardware, Seals, & ConsumablesSeals, Gaskets, & O-RingsO-Rings8M-4433: 29.74mm Inside Diameter Seal-O-Ring
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Hardware, Seals, & ConsumablesSeals, Gaskets, & O-RingsO-Rings
8M-4433: 29.74mm Inside Diameter Seal-O-Ring
8M-4433: 29.74mm Inside Diameter Seal-O-Ring
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8M-4433: 29.74mm Inside Diameter Seal-O-Ring
8M-4433: 29.74mm Inside Diameter Seal-O-Ring
8M-4433: 29.74mm Inside Diameter Seal-O-Ring
8M-4433: 29.74mm Inside Diameter Seal-O-Ring
8M-4433: 29.74mm Inside Diameter Seal-O-Ring

O-ring

Brand: Cat

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Warranty Information
Warranty Information

Generally, warranty for parts purchased on Parts.Cat.Com is 12 months from the invoice date as defined in the Caterpillar Limited Warranty. Parts Warranty covers defects in material and workmanship throughout the Warranty period once it has been installed. For complete Warranty detail contact your local Cat Dealer.

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Return Policy
Return Policy Information
Unless otherwise noted by a non-returnable part
icon, most parts can be returned to your authorized Cat® dealer under their return policy.

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Find a DealerEmail
Warranty Information
Warranty Information

Generally, warranty for parts purchased on Parts.Cat.Com is 12 months from the invoice date as defined in the Caterpillar Limited Warranty. Parts Warranty covers defects in material and workmanship throughout the Warranty period once it has been installed. For complete Warranty detail contact your local Cat Dealer.

Need More Help? Contact Us

Find a DealerEmail
Return Policy
Return Policy Information
Unless otherwise noted by a non-returnable part
icon, most parts can be returned to your authorized Cat® dealer under their return policy.

Need More Help? Contact Us

Find a DealerEmail
Parts diagram for 8M-4433
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Description for part number 8M-4433

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.

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Warning:This product can expose you to chemicals including Silica, crystalline (airborne particles of respirable size), which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.
Specifications for part number 8M-4433

Units of Measure

USMetric

Cross Section Diameter (mm): 3.53

Cross Section Diameter (in): 0.139

Inside Diameter (mm): 29.74

Inside Diameter (in): 1.171

SAE AS568 Dash Size: -217

Material: Silicone (70),VMQ - Silicone,Silicone (VMQ),Silicone / MQ / VMQ / PMQ Rubber

Material Description: Silicone (VMQ) rubber is capable of service temperatures of -55 to 150C and is resistant air. Silicone rubber should not be used in applications that require resistance to fuel, oil and coolants.

Notes: Dimensions and material descriptions provided for reference only.

Polymer: VMQ (Silicone rubber)

Applications: Electrical system seals; High temperature air seals; High temperature static grease seals

Not Compatible With: Acetone; Aromatic hydrocarbons; EP oil; Fuel oil; Gasoline; Ketones; Low aniline point oils; Petroleum oils; Steam & hot water

Material Hardness: 70A

Temperature (°C): -46 - 150

Compatible With: Air; Diacetone alcohol; Ethylene glycol; Extreme high/low temperatures; High aniline point oil; Iso-butyl alcohol; Ozone & UV light; Polyglycol

Dash Size: 217

Temperature (°F): -50 - 300

Seal/O-Ring Type: Standard

Primary Sealing Material: Rubber

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Compatible Models for part number 8M-4433

UNDERGROUND ART TRUCK

AE40 AD55 AE40 II AD45 AD40

WHEEL TRACTOR

631E 637E

HYDRAULIC CONTROL

163 153

VEHICULAR ENGINE

D348

TRACK LOADER

983 977K

COLD PLANER

PM-200 PM-565

WHEEL DOZER

834B

WINCH

55

LANDFILL COMPACTOR

836

WHEEL LOADER

992 988B 926 992B 992C 926E

TRACK SKIDDER

D5HTSK II

TRACK-TYPE TRACTOR

D7R D7F D7G D7H D5 D8R D8L D10 D9R D6R II D4H D4E D5B D11R D5H D7R II D6C D6D D6R D6E D6H

CHALLENGER

65C 65B 65D 70C 65 75C 85C

ARTICULATED TRUCK

D35HP D400

RIPPER

7 6 5 4 977 951 955 10

PIPELAYER

572G 571G 572R II 561D

WHEEL SCRAPER

666 666B 657 657B

TRUCK

775F 775E 775D 772G 69D 772 773D 773F 770 777 769D 773B

QUARRY TRUCK

771D 775B

TRACTOR

776 772B 768C

EXCAVATOR

225

BULLDOZER

10C 5A 5S 7SU 6A 6S 10S 7S 10U 7S LGP 8A 8S 4A

TRACK-TYPE LOADER

977K

View More
DiagramDescriptionSpecificationsCompatible Models
Parts diagram for 8M-4433
View Detailed Parts Diagrams
Add Your Equipment
Description for part number 8M-4433

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 Silica, crystalline (airborne particles of respirable size), which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.
Specifications for part number 8M-4433

Units of Measure

USMetric

Cross Section Diameter (mm): 3.53

Cross Section Diameter (in): 0.139

Inside Diameter (mm): 29.74

Inside Diameter (in): 1.171

SAE AS568 Dash Size: -217

Material: Silicone (70),VMQ - Silicone,Silicone (VMQ),Silicone / MQ / VMQ / PMQ Rubber

Material Description: Silicone (VMQ) rubber is capable of service temperatures of -55 to 150C and is resistant air. Silicone rubber should not be used in applications that require resistance to fuel, oil and coolants.

Notes: Dimensions and material descriptions provided for reference only.

Polymer: VMQ (Silicone rubber)

Applications: Electrical system seals; High temperature air seals; High temperature static grease seals

Not Compatible With: Acetone; Aromatic hydrocarbons; EP oil; Fuel oil; Gasoline; Ketones; Low aniline point oils; Petroleum oils; Steam & hot water

Material Hardness: 70A

Temperature (°C): -46 - 150

Compatible With: Air; Diacetone alcohol; Ethylene glycol; Extreme high/low temperatures; High aniline point oil; Iso-butyl alcohol; Ozone & UV light; Polyglycol

Dash Size: 217

Temperature (°F): -50 - 300

Seal/O-Ring Type: Standard

Primary Sealing Material: Rubber

View More
Compatible Models for part number 8M-4433

UNDERGROUND ART TRUCK

AE40 AD55 AE40 II AD45 AD40

WHEEL TRACTOR

631E 637E

HYDRAULIC CONTROL

163 153

VEHICULAR ENGINE

D348

TRACK LOADER

983 977K

COLD PLANER

PM-200 PM-565

WHEEL DOZER

834B

WINCH

55

LANDFILL COMPACTOR

836

WHEEL LOADER

992 988B 926 992B 992C 926E

TRACK SKIDDER

D5HTSK II

TRACK-TYPE TRACTOR

D7R D7F D7G D7H D5 D8R D8L D10 D9R D6R II D4H D4E D5B D11R D5H D7R II D6C D6D D6R D6E D6H

CHALLENGER

65C 65B 65D 70C 65 75C 85C

ARTICULATED TRUCK

D35HP D400

RIPPER

7 6 5 4 977 951 955 10

PIPELAYER

572G 571G 572R II 561D

WHEEL SCRAPER

666 666B 657 657B

TRUCK

775F 775E 775D 772G 69D 772 773D 773F 770 777 769D 773B

QUARRY TRUCK

771D 775B

TRACTOR

776 772B 768C

EXCAVATOR

225

BULLDOZER

10C 5A 5S 7SU 6A 6S 10S 7S 10U 7S LGP 8A 8S 4A

TRACK-TYPE LOADER

977K

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

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