1757914 Backup Ring for Caterpillar

The 1757914 Backup Ring is a transmission seal ring used with Caterpillar equipment. It is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The available product data identifies the part by the Caterpillar equipment brand and does not specify individual machine models or series. Model-level fitment should therefore be confirmed using the machine serial number and the dimensions of the installed ring before ordering.

Cross-reference numbers

• 1757914
• 175-7914

The numbers above identify the same backup ring in different number formats. The product is also designated as RING-BACKU in the available reference description.

Specifications

The ring material is specified as PTFE. The available material data lists air, engine oil, diesel fuel and coolant among the media with which PTFE is used. PTFE is also specified for use at very high temperatures. The same material data notes that the ring can be contaminated or damaged during installation, so the sealing surface, groove and installation tools should be kept clean and the ring should be installed without cutting, twisting or deformation.

The stated cross-section dimensions are 0.04 in for width and 0.1 in for height. The stated inner diameter is 4.5 in. Length, width and depth are listed separately in centimetres as 12.5 cm, 12.5 cm and 0.1 cm. The listed weight is 0.1 lb. No additional components, seals, retainers or installation tools are included in the available product data.