8C3107 O-Ring for Caterpillar Equipment

The 8C3107 O-ring is a standard sealing component used in Caterpillar engines and generator sets. It is intended for axial or radial sealing applications and is supplied as a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The sealing element is made from FKM fluoroelastomer with a Shore A hardness of 75. The listed operating temperature range is from -40 °F to 350 °F. The ring is black and has no coating.

Fitment

This O-ring is listed for use with Caterpillar engine and generator set equipment, including the following engine models and series:

• Caterpillar 3516
• Caterpillar 3516B
• Caterpillar 3516C
• Caterpillar 3524B
• Caterpillar C9
• Caterpillar C175
• Caterpillar C175-
• Caterpillar C175-16
• Caterpillar G3512E
• Caterpillar G3520B

The listed fitment identifies the part for Caterpillar engine applications and Caterpillar generator set applications. Compatibility should be checked against the equipment parts documentation and the required sealing position before installation, especially where several seal sizes are used within the same assembly.

Cross-reference numbers

• 8C-3107

SKU 8C3107 and part number 8C-3107 identify the same O-ring specification in the supplied product data. The hyphenated form is used as the listed part-number format.

Specifications

• Part name: O-ring
• SKU: 8C3107
• Part number: 8C-3107
• Equipment manufacturer: Caterpillar
• Equipment type: Engine and generator set
• Seal type: Standard O-ring
• Seal application: Axial or radial sealing
• Seal material: FKM fluoroelastomer
• Hardness: 75 Shore A
• Temperature range: -40 °F to 350 °F
• SAE AS568 dash size: -328
• Listed size: 328
• Cross-section diameter: 0.21 in
• Inside diameter: 1.85 in
• Outside diameter: 2.27 in
• Coating: None
• Color: Black

Product dimensions and weight

• Weight: 0.1 lb
• Length: 8.89 cm
• Width: 15.24 cm
• Depth: 1.27 cm

The dimensions and weight above are the listed product data. The sealing dimensions of the O-ring are specified separately as a 1.85 in inside diameter, 2.27 in outside diameter, and 0.21 in cross-section diameter.