2N3553 Seal for Caterpillar Equipment

The 2N3553 is a joint seal used in Caterpillar engines, engine and generator kits, and ship equipment. It is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

Fitment

• Engine and generator kits: Caterpillar D379B, D398B, D399.
• Ship equipment: Caterpillar D346, D348, D349, D379A, D379B, D398A, D398B, D399.
• Industrial engines: Caterpillar D346, D348, D349, D379, D379B, D398, D398B, D399, G379, G379A, G398, G399.

The listed applications cover Caterpillar engine and power equipment configurations identified for part number 2N-3553. Model selection should be checked against the equipment model and the part number marked in the service documentation.

Cross-reference numbers

Part numbers 2N3553 and 2N-3553 refer to the same seal designation, with and without the hyphen in the number format.

Specifications

The seal dimensions are an inner diameter of 2.000 inches, an outside diameter of 2.626 inches, and a thickness of 0.284 inches. The supplied product data identifies FCM as the seal material and specifies a weight of 0.1 lb. The listed overall product dimensions are 8.89 cm in length, 15.24 cm in width, and 1.27 cm in depth.