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BackHomeHardware, Seals, & ConsumablesSeals, Gaskets, & O-RingsO-Rings8M-5248: 3.53 x 28.17mm 70A VMQ O-Ring
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Hardware, Seals, & ConsumablesSeals, Gaskets, & O-RingsO-Rings
8M-5248: 3.53 x 28.17mm 70A VMQ O-Ring
8M-5248: 3.53 x 28.17mm 70A VMQ O-Ring
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8M-5248: 3.53 x 28.17mm 70A VMQ O-Ring
8M-5248: 3.53 x 28.17mm 70A VMQ O-Ring
8M-5248: 3.53 x 28.17mm 70A VMQ O-Ring
8M-5248: 3.53 x 28.17mm 70A VMQ O-Ring
8M-5248: 3.53 x 28.17mm 70A VMQ O-Ring

Cat® O-Ring Seal for fuel injection lines provides an effective seal within the fuel injection line connections

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-5248
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Description for part number 8M-5248

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-5248

Units of Measure

USMetric

Cross Section Diameter (mm): 3.53

Cross Section Diameter (in): 0.139

Inside Diameter (mm): 28.17

Inside Diameter (in): 1.109

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.

SAE AS568 Dash Size: -216

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: 216

Temperature (°F): -50 - 300

Seal/O-Ring Type: Standard

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Compatible Models for part number 8M-5248

GENERATOR

SR4

TRUCK ENGINE

3306 1673C G3306 3306C 3306B

LOAD HAUL DUMP

R1300

OFF HIGHWAY TRUCK

789D

MOTOR GRADER

120G 120B 16 140B 140G 130G 140 14E 120 160G 12F

WINCH

528 55

TRACK-TYPE TRACTOR

D10 D4D D4E D5B D5H D6C D6D D7G2 D6E D6H D7F D7G D5 D8K D8L D8H D9G D9R D6G2 XL D10N D4E SR

WHEEL SKIDDER

525 518 528

MARINE ENGINE

D330C D333C 3304 3306 3304B

PIPELAYER

561D 561C 572F 583K 571F 594

EXCAVATOR

350-A L 350 L 225 235 215

GENERATOR SET

3306B

WHEEL TRACTOR

650B 651B 660B 627 621 623 637 631E 631C 641 651 641B 657 666B 623B 621B 633C 657B 621E 627B 637D 637E

HYDRAULIC CONTROL

48 163 143 183B 153 141 140

TRACK LOADER

973 941 951C 951B 977H 941B 977K 955H 955K 955L

SOIL COMPACTOR

815

WHEEL DOZER

834 814 824

LANDFILL COMPACTOR

816

WHEEL LOADER

972G 988 920 930 936 966D 966C 966E 966G 950 930R 930T 966F II 936E 924G 980B 970F

GEN SET ENGINE

3304B 3306 3304

ENGINE - MACHINE

3304 3306

CHALLENGER

70C 75C 85C

ARTICULATED TRUCK

D250B D300E II

RIPPER

8D 977 951 955 10 6 5 4

INDUSTRIAL ENGINE

3306B 3304 3306 D333C 3304B D330C

QUARRY TRUCK

775B 771D 771C

WHEEL SCRAPER

627 666B 621E 623F 623E 666 639D 627B 615C 637 657

TRUCK

789 69D 773D 773B 793F OEM 775D 769 773 777 769B 769D 769C

GAS ENGINE

G3306

TRACTOR

776 768C 772B

BULLDOZER

7SU 977A 7S LGP 8S 4S 10C 5A 5S 6A 6S 10S 7S 10U 8A 955 4A

TRACK-TYPE LOADER

977K

View More
DiagramDescriptionSpecificationsCompatible Models
Parts diagram for 8M-5248
View Detailed Parts Diagrams
Add Your Equipment
Description for part number 8M-5248

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-5248

Units of Measure

USMetric

Cross Section Diameter (mm): 3.53

Cross Section Diameter (in): 0.139

Inside Diameter (mm): 28.17

Inside Diameter (in): 1.109

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.

SAE AS568 Dash Size: -216

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: 216

Temperature (°F): -50 - 300

Seal/O-Ring Type: Standard

View More
Compatible Models for part number 8M-5248

GENERATOR

SR4

TRUCK ENGINE

3306 1673C G3306 3306C 3306B

LOAD HAUL DUMP

R1300

OFF HIGHWAY TRUCK

789D

MOTOR GRADER

120G 120B 16 140B 140G 130G 140 14E 120 160G 12F

WINCH

528 55

TRACK-TYPE TRACTOR

D10 D4D D4E D5B D5H D6C D6D D7G2 D6E D6H D7F D7G D5 D8K D8L D8H D9G D9R D6G2 XL D10N D4E SR

WHEEL SKIDDER

525 518 528

MARINE ENGINE

D330C D333C 3304 3306 3304B

PIPELAYER

561D 561C 572F 583K 571F 594

EXCAVATOR

350-A L 350 L 225 235 215

GENERATOR SET

3306B

WHEEL TRACTOR

650B 651B 660B 627 621 623 637 631E 631C 641 651 641B 657 666B 623B 621B 633C 657B 621E 627B 637D 637E

HYDRAULIC CONTROL

48 163 143 183B 153 141 140

TRACK LOADER

973 941 951C 951B 977H 941B 977K 955H 955K 955L

SOIL COMPACTOR

815

WHEEL DOZER

834 814 824

LANDFILL COMPACTOR

816

WHEEL LOADER

972G 988 920 930 936 966D 966C 966E 966G 950 930R 930T 966F II 936E 924G 980B 970F

GEN SET ENGINE

3304B 3306 3304

ENGINE - MACHINE

3304 3306

CHALLENGER

70C 75C 85C

ARTICULATED TRUCK

D250B D300E II

RIPPER

8D 977 951 955 10 6 5 4

INDUSTRIAL ENGINE

3306B 3304 3306 D333C 3304B D330C

QUARRY TRUCK

775B 771D 771C

WHEEL SCRAPER

627 666B 621E 623F 623E 666 639D 627B 615C 637 657

TRUCK

789 69D 773D 773B 793F OEM 775D 769 773 777 769B 769D 769C

GAS ENGINE

G3306

TRACTOR

776 768C 772B

BULLDOZER

7SU 977A 7S LGP 8S 4S 10C 5A 5S 6A 6S 10S 7S 10U 8A 955 4A

TRACK-TYPE LOADER

977K

View More
Related parts
270-1533: O-Ring Seal Kit (70A Silicone)
270-1533: O-Ring Seal Kit (70A Silicone)

O-Ring Seal Kit: Low Pressure, High Temperaure Applications, 32 Sizes, 149 Seals, Silicone, 70 Duro

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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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